Overview
The AD8657ARMZ is a dual micropower, precision, rail-to-rail input/output operational amplifier produced by Analog Devices Inc. This amplifier is optimized for low power consumption and a wide operating supply voltage range, making it suitable for a variety of applications. It features a low offset voltage, very low input bias current, and high immunity to electromagnetic interference. The AD8657ARMZ operates from a single supply of 2.7V to 18V or a dual supply of ±1.35V to ±9V, with a typical quiescent supply current of 18 μA at 18V.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD8657ARMZ |
| No. of Channels | 2 Channels |
| Gain Bandwidth Product | 230 kHz at AV = 100 typical |
| Slew Rate | 80 V/ms typical |
| Supply Voltage Range | 2.7V to 18V, ±1.35V to ±9V |
| IC Case / Package | MSOP |
| No. of Pins | 8 Pins |
| Amplifier Type | CMOS |
| Rail to Rail | Rail - Rail Input / Output (RRIO) |
| Input Offset Voltage | 350 µV maximum |
| Input Bias Current | 5 pA maximum |
| Operating Temperature Range | -40°C to 125°C |
| Quiescent Supply Current | 18 µA typical at 18V |
Key Features
- Micropower at high voltage: 22 μA maximum at 18V
- Low offset voltage: 350 μV maximum
- Low input bias current: 20 pA maximum
- Gain bandwidth product: 230 kHz at AV = 100 typical
- Unity-gain crossover of 230 kHz and -3dB closed-loop bandwidth of 305 kHz
- Single-supply operation from 2.7V to 18V and dual-supply operation from ±1.35V to ±9V
- Unity-gain stable and excellent electromagnetic interference immunity
- 8-lead MSOP package
Applications
- Portable operating systems
- Current monitors
- 4 mA to 20 mA loop drivers
- Buffer/level shifting and multipole filters
- Remote/wireless sensors
- Low power transimpedance amplifiers
Q & A
- What is the typical quiescent supply current of the AD8657ARMZ at 18V?
The typical quiescent supply current is 18 μA at 18V.
- What is the input offset voltage of the AD8657ARMZ?
The input offset voltage is 350 μV maximum.
- What is the slew rate of the AD8657ARMZ?
The slew rate is 80 V/ms typical.
- What are the operating temperature ranges for the AD8657ARMZ?
The operating temperature range is from -40°C to 125°C.
- What types of supply voltage can the AD8657ARMZ operate on?
The AD8657ARMZ can operate on a single supply from 2.7V to 18V or a dual supply from ±1.35V to ±9V.
- Is the AD8657ARMZ unity-gain stable?
Yes, the AD8657ARMZ is unity-gain stable.
- What is the gain bandwidth product of the AD8657ARMZ?
The gain bandwidth product is 230 kHz at AV = 100 typical.
- What package types are available for the AD8657ARMZ?
The AD8657ARMZ is available in an 8-lead MSOP package and an 8-lead LFCSP package.
- What are some common applications of the AD8657ARMZ?
Common applications include portable operating systems, current monitors, 4 mA to 20 mA loop drivers, buffer/level shifting, multipole filters, remote/wireless sensors, and low power transimpedance amplifiers.
- Does the AD8657ARMZ have high immunity to electromagnetic interference?
Yes, the AD8657ARMZ has excellent electromagnetic interference immunity.
