Contact Us:00852-30501886 Email:sales@allicdata.com
Sitemap How to buy Login / Register
USD
USA EN
Cart(0)
Products Manufacturers Authorized Agent Send RFQ Blog（news） About us
Home> Products>

Search Result:parallax buffer amplifier

 --3254 Item(s) In Category:RF Amplifiers

Related Categories

Integrated Circuits (ICs)
Linear - Amplifiers - Instrume...
Logic - Buffers, Drivers, Rece...
Data Acquisition - Digital to ...
Clock/Timing - Clock Buffers, ...
Clock/Timing - Clock Generator...
Interface - Signal Buffers, Re...
Linear - Amplifiers - Special ...
Linear - Amplifiers - Video Am...
Logic - Specialty Logic
Clock/Timing - Application Spe...
Interface - Analog Switches - ...
Audio Special Purpose
Interface - Analog Switches, M...
Interface - Specialized
Logic - Gates and Inverters - ...
Linear - Video Processing
PMIC - Voltage Regulators - Sp...
Interface - Telecom
Embedded - Microcontrollers
PMIC - Power Management - Spec...
Interface - Sensor and Detecto...
Specialized ICs
Linear - Amplifiers - Audio
Embedded - Microcontroller, Mi...
Data Acquisition - Analog to D...
PMIC - Thermal Management
Interface - Drivers, Receivers...
Memory
Data Acquisition - ADCs/DACs -...
Logic - Shift Registers
Logic - Gates and Inverters
PMIC - Current Regulation/Mana...
PMIC - Display Drivers
Interface - CODECs
Sensors, Transducers
Pressure Sensors, Transducers
Amplifiers
Optical Sensors - Photointerru...
Proximity Sensors
Optical Sensors - Photointerru...
Accessories
Magnetic Sensors - Switches (S...
Gas Sensors
Solar Cells
Optical Sensors - Ambient Ligh...
Motion Sensors - Optical
RF/IF and RFID
RF Amplifiers
RF Accessories
RF Evaluation and Development ...
RF Misc ICs and Modules
RF Demodulators
RF Transceiver Modules
RFID Transponders, Tags
RF Mixers
RFID Reader Modules
Development Boards, Kits, Progra...
Evaluation Boards - Op Amps
Evaluation Boards - Audio Ampl...
Evaluation and Demonstration B...
Accessories
Evaluation Boards - Embedded -...
Evaluation Boards - Expansion ...
Software, Services
Evaluation Boards - Sensors
Programming Adapters, Sockets
Evaluation Boards - Analog to ...
Programmers, Emulators, and De...
Cable Assemblies
Fiber Optic Cables
USB Cables
Resistors
Resistor Networks, Arrays
Uncategorized
Miscellaneous
Audio Products
Alarms, Buzzers, and Sirens
Maker/DIY, Educational
Robotics Kits
Educational Kits
Books, Media
Industrial Controls
Specialized
Machine Vision - Cameras/Senso...
Machine Vision - Control/Proce...
Pneumatics, Hydraulics
Accessories
Monitor - Current/Voltage - Re...
Motors, Solenoids, Driver Boards...
Motor Driver Boards, Modules
Motors - AC, DC
Hardware, Fasteners, Accessories
Structural, Motion Hardware
Power Supplies - External/Intern...
Accessories
AC DC Desktop, Wall Adapters
Test and Measurement
Equipment - Specialty
Accessories
Equipment - Environmental Test...
Test Leads - Jumper, Specialty
Relays
Signal Relays, Up to 2 Amps
Crystals, Oscillators, Resonator...
Resonators
Crystals
Discrete Semiconductor Products
Transistors - Special Purpose
Tools
Crimpers, Applicators, Presses...
Wire Strippers and Accessories
Optoelectronics
Accessories
Display Modules - LCD, OLED Ch...
Display Modules - LCD, OLED, G...
Boxes, Enclosures, Racks
Boxes
Prototyping, Fabrication Product...
Solderless Breadboards
Computers, Office - Components, ...
Accessories
Photo Allicdata Part# Mft.Part# Company Spec. QTY. Pricing(USD) PDF
HMC391LP4ETR HMC391LP4ETR-ND HMC391LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 3.9GHz ~ 4.45GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 30mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC391
1000
Order

--

 HMC391LP4ETR-ND Datasheet
HMC391LP4TR HMC391LP4TR-ND HMC391LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 3.9GHz ~ 4.45GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 30mA
 Test Frequency: 4GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC391
1000
Order

500+:

$8.8153

 HMC391LP4TR-ND Datasheet
HMC505LP4 HMC505LP4-ND HMC505LP4 Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 6.8GHz ~ 7.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 80mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC505
1000
Order

32+:

$16.2898

 HMC505LP4-ND Datasheet
HMC390LP4TR HMC390LP4TR-ND HMC390LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 3.55GHz ~ 3.9GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 42mA
 Test Frequency: 3.55GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC390
1000
Order

1+:

$0

 HMC390LP4TR-ND Datasheet
HMC505LP4ETR HMC505LP4ETR-ND HMC505LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 6.8GHz ~ 7.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 80mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC505
1000
Order

--

 HMC505LP4ETR-ND Datasheet
HMC388LP4ETR HMC388LP4ETR-ND HMC388LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 3.15GHz ~ 3.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 39mA
 Test Frequency: 3.1GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC388
1000
Order

500+:

$7.0614

 HMC388LP4ETR-ND Datasheet
HMC466LP4ETR HMC466LP4ETR-ND HMC466LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 0Hz ~ 20GHz
 P1dB: 24dBm
 Gain: 16dB
 Noise Figure: 4dB
 RF Type: VSAT
 Voltage - Supply: 8V
 Current - Supply: 160mA
 Test Frequency: 12GHz ~ 20GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC466
1000
Order

--

 HMC466LP4ETR-ND Datasheet
HMC386LP4ETR HMC386LP4ETR-ND HMC386LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 2.6GHz ~ 2.8GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC386
1000
Order

500+:

$7.0522

 HMC386LP4ETR-ND Datasheet
HMC506LP4ETR 1127-1435-2-ND HMC506LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 7.8GHz ~ 8.7GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 77mA
 Package / Case: 24-VFQFN Exposed Pad
 Base Part Number: HMC506
 Supplier Device Package: 24-QFN (4x4)
792
Order

1+:

$24.62

 1127-1435-2-ND Datasheet
HMC385LP4ETR HMC385LP4ETR-ND HMC385LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 2.25GHz ~ 2.5GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.5GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC385
1000
Order

500+:

$6.1022

 HMC385LP4ETR-ND Datasheet
HMC-C073 HMC-C073-ND HMC-C073 Analog Devices Inc.
View more  Packaging: Bulk
 Part Status: Active
 Frequency: 38.4GHz ~ 43.2GHz
 P1dB: 20dBm
 Noise Figure: 4.5dB
 Voltage - Supply: 5V
 Current - Supply: 350mA
 Package / Case: Module, SMA Connectors
 Supplier Device Package: Module
 Base Part Number: HMC
1000
Order

1+:

$1.89

 HMC-C073-ND Datasheet
HMC506LP4 1127-3554-ND HMC506LP4 Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 7.8GHz ~ 8.7GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 77mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC506
26
Order

1+:

$18.6984

10+:

$17.2469

100+:

$14.7279

 1127-3554-ND Datasheet
HMC390LP4E 1127-3106-ND HMC390LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 3.55GHz ~ 3.9GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 42mA
 Test Frequency: 3.55GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC390
1000
Order

64+:

$9.0094

 1127-3106-ND Datasheet
HMC506LP4TR HMC506LP4TR-ND HMC506LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 7.8GHz ~ 8.7GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 77mA
 Test Frequency: 8GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC506
1000
Order

500+:

$13.3714

 HMC506LP4TR-ND Datasheet
HMC391LP4E 1127-1363-ND HMC391LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 3.9GHz ~ 4.45GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 30mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC391
64
Order

--

 1127-1363-ND Datasheet
HMC388LP4 HMC388LP4-ND HMC388LP4 Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Obsolete
 Frequency: 3.15GHz ~ 3.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 39mA
 Test Frequency: 3.1GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC388
1000
Order

1+:

$0

 HMC388LP4-ND Datasheet
HMC391LP4 HMC391LP4-ND HMC391LP4 Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 3.9GHz ~ 4.45GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 30mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC391
1000
Order

51+:

$11.2471

 HMC391LP4-ND Datasheet
HMC505LP4TR HMC505LP4TR-ND HMC505LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 6.8GHz ~ 7.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 80mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC505
1000
Order

500+:

$13.2236

 HMC505LP4TR-ND Datasheet
MGA-565P8-TR2 MGA-565P8-TR2-N
D		 MGA-565P8-TR2 Broadcom Limited
View more  Packaging: Tape & Reel (TR)
 Part Status: Obsolete
 Frequency: 0Hz ~ 3.5GHz
 Gain: 21.8dB
 RF Type: Cellular, PCS
 Voltage - Supply: 3 V ~ 5 V
 Current - Supply: 67mA
 Test Frequency: 2GHz
 Package / Case: 8-DFN Exposed Pad
 Supplier Device Package: 8-LPCC (2x2)
1000
Order

1+:

$0

 MGA-565P8-TR2-ND Datasheet
HMC390LP4 HMC390LP4-ND HMC390LP4 Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 3.55GHz ~ 3.9GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 42mA
 Test Frequency: 3.55GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC390
1000
Order

1+:

$0

 HMC390LP4-ND Datasheet
HMC506LP4E 1127-2981-ND HMC506LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 7.8GHz ~ 8.7GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 77mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC506
32
Order

--

 1127-2981-ND Datasheet
HMC385LP4TR HMC385LP4TR-ND HMC385LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 2.25GHz ~ 2.5GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.5GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC385
1000
Order

500+:

$7.6278

 HMC385LP4TR-ND Datasheet
HMC388LP4TR HMC388LP4TR-ND HMC388LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 3.15GHz ~ 3.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 39mA
 Test Frequency: 3.1GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC388
1000
Order

1+:

$0

 HMC388LP4TR-ND Datasheet
HMC388LP4E 1127-1360-ND HMC388LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 3.15GHz ~ 3.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 39mA
 Test Frequency: 3.1GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC388
53
Order

--

 1127-1360-ND Datasheet
HMC384LP4TR HMC384LP4TR-ND HMC384LP4TR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 2.05GHz ~ 2.25GHz
 RF Type: General Purpose
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.2GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC384
1000
Order

1+:

$0

 HMC384LP4TR-ND Datasheet
HMC390LP4ETR 1127-1362-2-ND HMC390LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 3.55GHz ~ 3.9GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 42mA
 Test Frequency: 3.55GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC390
1000
Order

500+:

$7.0614

 1127-1362-2-ND Datasheet
HMC384LP4ETR HMC384LP4ETR-ND HMC384LP4ETR Analog Devices Inc.
View more  Packaging: Tape & Reel (TR)
 Part Status: Active
 Frequency: 2.05GHz ~ 2.25GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.2GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC384
1000
Order

500+:

$6.0656

 HMC384LP4ETR-ND Datasheet
MGA-565P8-BLK 516-1948-ND MGA-565P8-BLK Broadcom Limited
View more  Packaging: Bulk
 Part Status: Obsolete
 Frequency: 0Hz ~ 3.5GHz
 Gain: 21.8dB
 RF Type: Cellular, PCS
 Voltage - Supply: 3 V ~ 5 V
 Current - Supply: 67mA
 Test Frequency: 2GHz
 Package / Case: 8-DFN Exposed Pad
 Supplier Device Package: 8-LPCC (2x2)
1000
Order

1+:

$0

 516-1948-ND Datasheet
HMC385LP4E 1127-1357-ND HMC385LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Lead Free Status / RoHS Status: Lead free / RoHS Compliant
 Part Status: Active
 Moisture Sensitivity Level (MSL): 1 (Unlimited)
 Frequency: 2.25GHz ~ 2.5GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.5GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
311
Order

--

 1127-1357-ND Datasheet
HMC385LP4 HMC385LP4-ND HMC385LP4 Analog Devices Inc.
View more  Packaging: Strip
 Part Status: Active
 Frequency: 2.25GHz ~ 2.5GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.5GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC385
1000
Order

59+:

$9.2058

 HMC385LP4-ND Datasheet
MGA-565P8-TR1 516-1827-2-ND MGA-565P8-TR1 Broadcom Limited
View more  Packaging: Tape & Reel (TR)
 Part Status: Obsolete
 Frequency: 0Hz ~ 3.5GHz
 Gain: 21.8dB
 RF Type: Cellular, PCS
 Voltage - Supply: 3 V ~ 5 V
 Current - Supply: 67mA
 Test Frequency: 2GHz
 Package / Case: 8-DFN Exposed Pad
 Supplier Device Package: 8-LPCC (2x2)
1000
Order

1+:

$0

 516-1827-2-ND Datasheet
HMC386LP4E 1127-1358-ND HMC386LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 2.6GHz ~ 2.8GHz
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC386
12
Order

1+:

$10.2123

10+:

$9.387

100+:

$7.9276

 1127-1358-ND Datasheet
HMC505LP4E 1127-1434-ND HMC505LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 6.8GHz ~ 7.4GHz
 RF Type: VSAT
 Voltage - Supply: 3V
 Current - Supply: 80mA
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC505
36
Order

--

 1127-1434-ND Datasheet
HMC384LP4 HMC384LP4-ND HMC384LP4 Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Obsolete
 Frequency: 2.05GHz ~ 2.25GHz
 RF Type: General Purpose
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.2GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC384
1000
Order

1+:

$0

 HMC384LP4-ND Datasheet
HMC384LP4E 1127-1356-ND HMC384LP4E Analog Devices Inc.
View more  Packaging: Cut Strip
 Part Status: Active
 Frequency: 2.05GHz ~ 2.25GHz
 RF Type: General Purpose
 Voltage - Supply: 3V
 Current - Supply: 35mA
 Test Frequency: 2.2GHz
 Package / Case: 24-VFQFN Exposed Pad
 Supplier Device Package: 24-QFN (4x4)
 Base Part Number: HMC384
30
Order

--

 1127-1356-ND Datasheet
UAPM45SC UAPM45SC-ND UAPM45SC Microsemi Corporation
View more  Series: *
 Part Status: Obsolete
1000
Order

1+:

$0

 UAPM45SC-ND Datasheet
UAPM30MC UAPM30MC-ND UAPM30MC Microsemi Corporation
View more  Series: *
 Part Status: Obsolete
1000
Order

1+:

$0

 UAPM30MC-ND Datasheet
UATL30MC UATL30MC-ND UATL30MC Microsemi Corporation
View more  Series: *
 Part Status: Active
1000
Order

25+:

$129.209

 UATL30MC-ND Datasheet
UAPL45SC UAPL45SC-ND UAPL45SC Microsemi Corporation
View more  Series: *
 Part Status: Active
1000
Order

25+:

$79.7762

 UAPL45SC-ND Datasheet
UAPS65SC UAPS65SC-ND UAPS65SC Microsemi Corporation
View more  Series: *
 Part Status: Active
1000
Order

25+:

$290.908

 UAPS65SC-ND Datasheet
Hot Searches: parallax buffer amplifier parallax operational amplifier ablic buffer amplifier advanced buffer amplifier arms buffer amplifier analog buffer amplifier apex buffer amplifier akm buffer amplifier broadcom buffer amplifier electric buffer amplifier cirrus buffer amplifier dialog buffer amplifier diode buffer amplifier honeywell buffer amplifier ixys buffer amplifier maxim buffer amplifier maxlinear buffer amplifier microchip buffer amplifier monolithic buffer amplifier njrc buffer amplifier