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AD8606ARMZ

Dual precision CMOS R-R I/O op-amp, 65µV VOS, 1pA Ib, 10MHz GBW, MSOP-8

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Manufacturer Part：

AD8606ARMZ

Package：

MSOP-8 (3.00 x 3.00 x 0.85 mm)

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Description

Product Overview

The AD8606ARMZ from Analog Devices is a dual precision, low-noise, CMOS rail-to-rail input/output operational amplifier in an 8-lead MSOP package. Featuring 65µV maximum offset voltage, 1pA maximum input bias current, 8nV/√Hz voltage noise, and 10MHz bandwidth, it uses ADI’s patented DigiTrim trimming for superior precision without laser trimming.

Key Specifications

Number of Channels 2
Supply Voltage Range 2.7V to 5.5V (single supply)
Input Offset Voltage 65µV (max), 20µV (typical)
Input Bias Current 1pA (max)
Voltage Noise Density 8nV/√Hz
Gain Bandwidth Product 10MHz
Slew Rate 5V/µs
Open-Loop Gain 1000V/mV (120dB typical)
CMRR 100dB (typical)
PSRR 95dB (typical)
Quiescent Current 1mA/ch (typical)
Operating Temperature -40°C to +125°C
Package MSOP-8

Features

  • Low offset voltage: 65µV maximum
  • Ultra-low input bias current: 1pA maximum
  • Low noise: 8nV/√Hz
  • Rail-to-rail input and output
  • 10MHz bandwidth, 5V/µs slew rate
  • Unity-gain stable
  • No phase reversal for overdriven inputs
  • DigiTrim trimming technology

Applications

  • Photodiode amplification
  • Battery-powered instrumentation
  • Multi-pole active filters
  • High-impedance sensor interfaces
  • Portable audio amplification

The AD8606ARMZ is a dual CMOS operational amplifier from Analog Devices that combines precision, low noise, and rail-to-rail operation in a compact 8-lead MSOP package. The device achieves 65µV maximum input offset voltage using ADI’s patented DigiTrim technology, which eliminates the need for laser trimming while delivering superior precision. The CMOS input stage provides ultra-low 1pA maximum input bias current, making it ideal for high-impedance sensor interfaces and photodiode amplifiers. With 10MHz gain bandwidth, 8nV/√Hz voltage noise density, and rail-to-rail input/output capability, the AD8606 is specified over the extended industrial temperature range of -40°C to +125°C.

The AD8606ARMZ uses a CMOS input stage with DigiTrim trimming to achieve 65µV maximum offset voltage. DigiTrim adjusts internal trimming resistors through a digital programming step after wafer fabrication, providing better precision and stability than traditional laser trimming. The CMOS input structure delivers 1pA maximum input bias current with no phase reversal even when inputs exceed the supply rails by more than 2V. The rail-to-rail input stage uses complementary N-channel and P-channel differential pairs that cover the full supply range. The output stage drives within millivolts of both supply rails with up to 80mA output current. Internal compensation ensures unity-gain stability without external components. The device operates from 2.7V to 5.5V single supply with 120dB typical open-loop gain.

Pin Name Type Description
1 OUT A Output Channel A output
2 -IN A Input Channel A inverting input
3 +IN A Input Channel A non-inverting input
4 V- Power Negative supply or ground (single-supply operation)
5 +IN B Input Channel B non-inverting input
6 -IN B Input Channel B inverting input
7 OUT B Output Channel B output
8 V+ Power Positive supply voltage (2.7V to 5.5V)
  • Photodiode Amplification: Transimpedance amplifier for precision optical measurement with 1pA bias current introducing negligible DC error and 8nV/√Hz noise preserving weak signal detection
  • Battery-Powered Instrumentation: Signal conditioning for portable medical and industrial instruments with 2.7V minimum supply and 1mA/ch quiescent current extending battery runtime
  • Multi-Pole Active Filters: High-Q Sallen-Key and MFB filters with 10MHz GBW and 120dB open-loop gain maintaining filter accuracy at higher frequencies
  • High-Impedance Sensors: pH electrodes, piezoelectric transducers, and capacitive sensors with 1pA bias current preventing loading of megaohm source impedances
Model Manufacturer VOS Max GBW Key Difference
AD8606ARZ ADI 65µV 10MHz Same die in SOIC-8 package
AD8605ARTZ ADI 65µV 10MHz Single channel, SOT-23
MCP6002-I/SN Microchip 7mV 1MHz Lower cost, lower performance
OPA2320AIDGKR TI 150µV 20MHz Higher bandwidth, similar precision
LTC6078IMS8 ADI 25µV 1.6MHz Lower offset, lower bandwidth, ultra-low IQ
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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