Overview
The AD8657ACPZ-R7 is a dual micropower, precision, rail-to-rail input/output operational amplifier produced by Analog Devices Inc. This device is optimized for low power consumption and a wide operating supply voltage range, making it suitable for various applications requiring high precision and low power usage. The AD8657 operates from a single supply of 2.7 V to 18 V or dual supplies of ±1.35 V to ±9 V, with a typical quiescent supply current of 18 μA. It features high immunity to electromagnetic interference and uses the patented DigiTrim® trimming technique to achieve low offset voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Single/Dual) | 2.7 V to 18 V / ±1.35 V to ±9 V | V |
| Quiescent Supply Current | 18 μA | A |
| Input Offset Voltage (VOS) | 350 μV | V |
| Input Bias Current | 5 pA | A |
| Slew Rate | 0.07 V/μs | V/μs |
| Gain Bandwidth Product | 200 kHz | kHz |
| Output Current per Channel | 12 mA | A |
| Common Mode Rejection Ratio (CMRR) | 110 dB | dB |
| Power Supply Rejection Ratio (PSRR) | 125 dB | dB |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 8-lead LFCSP |
Key Features
- Rail-to-rail input and output capability
- Low power consumption with a typical quiescent supply current of 18 μA
- Wide operating supply voltage range: 2.7 V to 18 V single supply or ±1.35 V to ±9 V dual supply
- High immunity to electromagnetic interference
- Low offset voltage achieved through DigiTrim® trimming technique
- Low input bias current of 5 pA
- High CMRR and PSRR of 110 dB and 125 dB, respectively
- Extended industrial temperature range of -40°C to +125°C
Applications
- Portable operating systems
- Current monitors and 4 mA to 20 mA loop drivers
- Buffer/level shifting and multipole filters
- Remote/wireless sensors and low power transimpedance amplifiers
- Process and motor control applications
- DC gain and buffering of sensor front ends or high impedance input sources
Q & A
- What is the typical quiescent supply current of the AD8657ACPZ-R7?
18 μA.
- What is the operating supply voltage range for the AD8657ACPZ-R7?
2.7 V to 18 V single supply or ±1.35 V to ±9 V dual supply.
- What is the input offset voltage (VOS) of the AD8657ACPZ-R7?
350 μV.
- What is the slew rate of the AD8657ACPZ-R7?
0.07 V/μs.
- What is the gain bandwidth product of the AD8657ACPZ-R7?
200 kHz.
- What is the common mode rejection ratio (CMRR) of the AD8657ACPZ-R7?
110 dB.
- What is the power supply rejection ratio (PSRR) of the AD8657ACPZ-R7?
125 dB.
- What is the operating temperature range of the AD8657ACPZ-R7?
-40°C to +125°C.
- In what package types is the AD8657 available?
The AD8657 is available in an 8-lead MSOP package and an 8-lead LFCSP package.
- What are some typical applications of the AD8657ACPZ-R7?
Portable operating systems, current monitors, buffer/level shifting, remote/wireless sensors, and process and motor control applications.
