ISL21009BFB812Z

Noise - 0.1Hz to 10Hz:	4.5µVp-p
Base Part Number:	ISL21009
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Supply:	180µA
Voltage - Input:	3.5 V ~ 16.5 V
Noise - 10Hz to 10kHz:	22µVrms
Series:	FGA™
Temperature Coefficient:	3ppm/°C
Tolerance:	±0.04%
Current - Output:	7mA
Voltage - Output (Min/Fixed):	1.25V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Obsolete
Packaging:	Tube

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ISL21009BFB812Z

PMIC／Voltage Reference

The ISL21009BFB812Z is a monolithic CMOS voltage reference from Intersil Corporation which provides single-supply voltage reference ICs that offer superior accuracy, line and load regulation, temperature drift, and long-term stability. The ISL21009BFB812Z is a tolerant and reliable voltage reference device that provides a low initial tolerance of 1.25%, low temperature drift (4.4 ppm/C typ) and excellent long-term stability.

Application Field

The ISL21009BFB812Z is ideal for applications in automotive, industrial and consumer equipment requiring where reliable and tight voltage regulation is needed. It is particularly suitable for transconductance amplifiers, analog-to-digital converters, power supplies, instrumentation, robot controllers and various other applications that require superior temperature coefficient and accurate voltage measurements.

Features

• Low initial accuracy & low temperature coefficient: 1.25% maximum & 4.4ppm/°C Typical • Wide operating temperature range: -40°C to 125°C• Output voltage range: 2.7V to 18V• Low noise performance: 0.15mV RMS (2.5V to 4.5V) & 0.15mV P-P (4.5V to 5.5V)• Low quiescent current: 30uA (typical) • High output voltage accuracy: ±3.3mV when compared with 1.25% overall error • High ripple rejection rate: ±50mV/V, typ

Working Principle

The ISL21009BFB812Z is manufactured utilizing Analog’s patented digital-controlled trim architecture. The device contains 17 different accessable trim settings that can be adjusted via the included on-chip voltage references. The IC also contains two on-chip voltage references, a low voltage and a high voltage, to adjust the reference output voltage range. The ISL21009BFB812Z’s trimming function is performed internally and can be programmed via an external voltage. The device contains a digitally-controlled on-chip trim control logic to provide flexibility and improved performance. The trim control logic provides variable-precision control to achieve the required accuracy and tracking across a wide temperature range. The device also includes a high-precision error amplifier and a differential amplifier for external offsetting. The error amplifier provides a low power output stage for improved accuracy, line and load regulation and temperature drift. The differential amplifier provides the ability to adjust the external voltage programmatically to set the reference voltage output.In summary, the ISL21009BFB812Z is an advanced single-supply voltage reference IC that offers superior accuracy and long-term stability. The device is a perfect solution for applications requiring a regulated or low-power voltage reference.

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