AD820 Series

Single-Supply, Rail-to-Rail, Low Power FET-Input Op Amp

Catalog

Single-Supply, Rail-to-Rail, Low Power FET-Input Op Amp

Part	Mounting Type	Output Type	Current - Output / Channel	Supplier Device Package	-3db Bandwidth	Slew Rate	Amplifier Type	Voltage - Input Offset	Voltage - Supply Span (Max) [Max]	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Supply Span (Min) [Min]	Current - Input Bias	Gain Bandwidth Product	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Number of Circuits	Package / Case [custom]	Package / Case	Package / Case
Analog Devices AD820ARZ-REEL	Surface Mount	Rail-to-Rail	20 mA	8-SOIC	1.9 MHz	3 V/µs	J-FET	400 µV	36 V	8-SOIC	3.9 mm	0.154 in	5 V	2 pA	1.8 MHz	700 µA	85 °C	-40 °C	1
Analog Devices AD820ARMZ	Surface Mount	Rail-to-Rail	20 mA	8-MSOP		3 V/µs	J-FET	400 µV	36 V	8-MSOP 8-TSSOP			5 V	2 pA		700 µA	85 °C	-40 °C	1	0.118 in	3 mm
Analog Devices AD820AR-REEL7	Surface Mount	Rail-to-Rail	20 mA	8-SOIC	1.9 MHz	3 V/µs	J-FET	400 µV	36 V	8-SOIC	3.9 mm	0.154 in	5 V	2 pA	1.8 MHz	700 µA	85 °C	-40 °C	1
Analog Devices AD820BRZ	Surface Mount	Rail-to-Rail	20 mA	8-SOIC		3 V/µs	J-FET	300 çV	36 V	8-SOIC	3.9 mm	0.154 in	5 V	2 pA		700 µA	85 °C	-40 °C	1
Analog Devices AD820ANZ	Through Hole	Rail-to-Rail	20 mA	8-PDIP	1.9 MHz	3 V/µs	J-FET	400 µV	36 V	8-DIP			5 V	2 pA	1.8 MHz	700 µA	85 °C	-40 °C	1		0.3 in	7.62 mm
Analog Devices AD820AR-REEL	Surface Mount	Rail-to-Rail	20 mA	8-SOIC	1.9 MHz	3 V/µs	J-FET	400 µV	36 V	8-SOIC	3.9 mm	0.154 in	5 V	2 pA	1.8 MHz	700 µA	85 °C	-40 °C	1
Analog Devices AD820ARMZ-RL	Surface Mount	Rail-to-Rail	20 mA	8-MSOP		3 V/µs	J-FET	400 µV	36 V	8-MSOP 8-TSSOP			5 V	2 pA		700 µA	85 °C	-40 °C	1	0.118 in	3 mm
Analog Devices AD820ARZ	Surface Mount	Rail-to-Rail	20 mA	8-SOIC	1.9 MHz	3 V/µs	J-FET	400 µV	36 V	8-SOIC	3.9 mm	0.154 in	5 V	2 pA	1.8 MHz	700 µA	85 °C	-40 °C	1

Catalog

Single-Supply, Rail-to-Rail, Low Power FET-Input Op Amp

Key Features

• True single-supply operationOutput swings rail-to-railInput voltage range extends below groundSingle-supply capability from 5 V to 36 VDual-supply capability from ±2.5 V to ±18 V

• Excellent load driveCapacitive load drive up to 350 pFMinimum output current of 15 mA

• Excellent ac performance for low power800 μA maximum quiescent currentUnity-gain bandwidth: 1.8 MHzSlew rate of 3 V/μs

• Excellent dc performance800 μV maximum input offset voltage2 μV/°C typical offset voltage drift25 pA maximum input bias current

• Low noise: 13 nV/√Hz @ 10 kHz

Description

The AD820 is a precision, low power FET input op amp that can operate from a single supply of 5 V to 36 V, or dual supplies of ±2.5 V to ±18 V. It has true single-supply capability, with an input voltage range extending below the negative rail, allowing the AD820 to accommodate input signals below ground in the single-supply mode. Output voltage swing extends to within 10 mV of each rail, providing the maximum output dynamic range.Offset voltage of 800 μV maximum, offset voltage drift of 2 μV/°C, typical input bias currents below 25 pA, and low input voltage noise provide dc precision with source impedances up to 1 GΩ. 1.8 MHz unity gain bandwidth, −93 dB THD at 10 kHz, and 3 V/μs slew rate are provided for a low supply current of 800 μA. The AD820 drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA. This allows the amplifier to handle a wide range of load conditions. This combination of ac and dc performance, plus the outstanding load drive capability, results in an exceptionally versatile amplifier for the single-supply user.The AD820 is available in two performance grades. The A and B grades are rated over the industrial temperature range of −40°C to +85°C. The AD820 is offered in three 8-lead package options: plastic DIP (PDIP), surface mount (SOIC) and (MSOP).ApplicationsBattery-powered precision instrumentationPhotodiode preampsActive filters12-bit to 14-bit data acquisition systemsMedical instrumentationLow power references and regulatorsData Sheet, Rev. F, 11/08