AD8643 Series

Low Power, Rail-to-Rail Output, Precision JFET Quad Amplifier

Catalog

Low Power, Rail-to-Rail Output, Precision JFET Quad Amplifier

Part	Current - Output / Channel	Amplifier Type	Package / Case	Number of Circuits	Slew Rate	Voltage - Supply Span (Max) [Max]	Mounting Type	Output Type	Supplier Device Package	Voltage - Supply Span (Min) [Min]	Current - Input Bias	Voltage - Input Offset	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices AD8643ACPZ-REEL7	12 mA	J-FET	16-WFQFN Exposed Pad CSP	4	3 V/µs	26 V	Surface Mount	Rail-to-Rail	16-LFCSP-WQ (3x3)	5 V	0.25 pA	70 µV	200 µA	125 °C	-40 °C
Analog Devices AD8643ACPZ-R2	12 mA	J-FET	16-WFQFN Exposed Pad CSP	4	3 V/µs	26 V	Surface Mount	Rail-to-Rail	16-LFCSP-WQ (3x3)	5 V	0.25 pA	70 µV	200 µA	125 °C	-40 °C
Analog Devices AD8643ACPZ-REEL	12 mA	J-FET	16-WFQFN Exposed Pad CSP	4	3 V/µs	26 V	Surface Mount	Rail-to-Rail	16-LFCSP-WQ (3x3)	5 V	0.25 pA	70 µV	200 µA	125 °C	-40 °C

Catalog

Low Power, Rail-to-Rail Output, Precision JFET Quad Amplifier

Key Features

• Low supply current: 250 μA max

• Very low input bias current: 1 pA max

• Low offset voltage: 750 μV max

• Single-supply operation: 5 V to 26 V

• Dual-supply operation: ±2.5 V to ±13 V

• Rail-to-rail output

• Unity-gain stable

• See datasheet for additional features

Description

The AD8641 / AD8642 / AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer complementary metal-oxide semiconductor digital-to-analog converters (CMOS DACs), ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF.The AD8641 / AD8642 / AD8643 are suitable for applications utilizing multichannel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls.The AD8641 / AD8642 / AD8643 are fully specified over the extended industrial temperature range of −40°C to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC lead-free packages. The AD8643 is available in 14-lead SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free packages.ApplicationsLine-/battery-powered instrumentsPhotodiode amplifiersPrecision current sensingMedical instrumentationIndustrial controlsPrecision filtersPortable audioATE