LTC6363HMS8-1#PBF

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1. Describe

The LTC®6363 family includes four fully differential, Low-Power, Low-Noise Amplifier with Rail-to-Rail Output Optimized to drive SAR ADCs. The LTC6363 is a standalone differential amplifiers, where the gain is usually set using four external resistors. LTC6363-0.5, LTC6363-1 and The LTC6363-2 each have internal matching resistors to create Fixed Gain Blocks with 0.5V/V, 1V/V and 2V/V Gains respectively. Each fixed gain amplifier has Precision laser trimmed on-chip resistors for precise, Ultra stable gain and excellent CMRR.

2. Feature

    1. User-settable gain or fixed gain of 0.5V/V, 1V/V or 2V/V available

    2. 2.9nV/√Hz input referred noise

    3. 2mA maximum supply current

    4. 45ppm maximum gain error

    5. 0.5ppm/°C maximum gain error drift

    6. 94dB minimum CMRR

    7. 100µV maximum offset voltage

    8. 50nA maximum input offset current

    9. Fast settling: 720ns to 18-bit, 8VP-P output

  10. 2.8V (±1.4V) to 11V (±5.5V) supply voltage range

  11. Differential rail-to-rail output

  12. Input common mode range includes ground

  13. Low distortion: 118dB SFDR at 2kHz, 18VP-P

  14. 500MHz gain bandwidth product

  15. 35MHz –3dB bandwidth

  16. Low power shutdown: 20µA (VS = 3V)

  17. 8-lead MSOP, 2mm x 3mm 8-lead DFN, and 3mm x 3mm 16-lead LFCSP packages

3. Application

    1. 20-bit, 18-bit and 16-bit SAR ADC drivers

    2. Single-ended to differential conversion

    3. Low power ADC driver

    4. level shifter

    5. Differential line driver

    6. battery powered meter

4. Pin configuration

5. Pin Description

    1. (Pin 1): Inverting Input of Amplifier. 

    2. (Pin 2): Output Common Mode Reference Voltage.

    3. (Pin 3): Positive Power Supply. 

    4. (Pin 4): Positive Output Pin. 

    5. (Pin 5): Negative Output Pin. 

    6. (Pin 6/Exposed Pad Pin 9): Negative Power Supply.

    7. (Pin 7): When the SHDN pin is floating or driven high, the LTC6363 family is in the normal (active) operating mode. 

    8. (Pin 8): Noninverting Input of Amplifier. 

6. Function Description

The LTC6363HMS8-1#PBF family consists of four fully differential, low Power, low noise, precision amplifier. The LTC6363 is a Unconstrained fully differential amplifier, typically using with four external resistors. LTC6363-0.5, LTC6363-1, and the LTC6363-2 (gains of 0.5, 1, and 2, respectively) are Fully differential fixed gain block with precision, laser Trimmed, matched internal resistors for accurate, stable gain and excellent CMRR. The entire LT6363 family is Optimized to convert fully differential or single-ended signal to a low impedance, balanced differential output Ideal for driving high performance, low power differential sigma-delta or SAR ADCs. Balanced differential The nature of the amplifier also provides even harmonics Distortion cancellation and low sensitivity to common Pattern noise (eg power supply noise). The outputs of the LTC6363 family can swing rail-to-rail and can source up to 90mA or sink up to 40mA current. The LTC6363 family targets high bandwidth and low power applications. load capacitance Above 50pF to ground or 25pF differential should be Series Resistor Decoupling from 10Ω to 50Ω each output to prevent oscillation or ringing.

7. Application Information

even harmonics with maximum rejection common mode signal and noise. The VOCM pin should be bypassed with the ground plane A high quality 0.1µF ceramic capacitor. this will prevent Common mode signal and noise on this pin Unintentional conversion to differential signal and noise through external and internal impedance mismatch to integrated circuits.