Overview
The AD629ARZ is a high-performance difference amplifier produced by Analog Devices Inc. This device is designed to accurately measure differential signals in the presence of high common-mode voltages, making it an ideal choice for various industrial and high-voltage applications. The AD629ARZ offers a wide common-mode voltage range of up to ±270 V and input protection against common-mode or differential mode transients up to ±500 V. It is known for its high accuracy DC performance, excellent AC specifications, and robust operational capabilities over a broad temperature range.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Nominal Gain | VOUT = ±10 V, RL = 2 kΩ | 1 | 1 | 1 | V/V |
| Gain Error | VOUT = ±10 V, RL = 2 kΩ | 0.01 | 0.05 | 0.03 | % |
| Gain Nonlinearity | RL = 2 kΩ | 4 | 10 | 3 | ppm |
| Gain vs. Temperature | TA = TMIN to TMAX | 3 | 10 | 10 | ppm/°C |
| Offset Voltage | VS = ±15 V | 0.2 | 1 | 0.5 | mV |
| Offset Drift | VS = ±15 V | 20 | 10 | 10 | μV/°C |
| Common-Mode Rejection Ratio (CMRR) | 500 Hz | 77 | 86 | - | dB |
| Bandwidth | - | - | - | 500 kHz | - |
| Power Supply Range | - | ±2.5 V | - | ±18 V | - |
| Output Swing | ±12 V supply | - | - | ±10 V | - |
| Power Supply Current | - | - | - | 1 mA | - |
Key Features
- High common-mode voltage range up to ±270 V
- Input protection against common-mode or differential mode transients up to ±500 V
- Wide power supply range from ±2.5 V to ±18 V
- ±10 V output swing on ±12 V supply
- Low offset voltage and drift (0.2 mV to 1 mV, 10 μV/°C to 20 μV/°C)
- Low gain error and nonlinearity (0.01% to 0.05%, 3 ppm to 10 ppm)
- Excellent CMRR (77 dB to 86 dB at 500 Hz)
- 500 kHz bandwidth
- Maximum power supply current of 1 mA
- Available in 8-lead PDIP and 8-lead SOIC packages
- Guaranteed performance over the industrial temperature range of −40°C to +85°C
Applications
- High voltage current sensing
- Battery cell voltage monitors
- Power supply current monitors
- Motor controls
- Isolation applications where galvanic isolation is not required
Q & A
- What is the common-mode voltage range of the AD629ARZ?
The AD629ARZ has a common-mode voltage range of up to ±270 V.
- What is the input protection capability of the AD629ARZ?
The AD629ARZ has input protection against common-mode or differential mode transients up to ±500 V.
- What is the power supply range for the AD629ARZ?
The AD629ARZ operates over a wide power supply range from ±2.5 V to ±18 V.
- What is the output swing of the AD629ARZ on a ±12 V supply?
The AD629ARZ has an output swing of ±10 V on a ±12 V supply.
- What are the key accuracy specifications of the AD629ARZ?
The AD629ARZ features low offset voltage (0.2 mV to 1 mV), low offset drift (10 μV/°C to 20 μV/°C), and low gain error and nonlinearity (0.01% to 0.05%, 3 ppm to 10 ppm).
- What is the CMRR of the AD629ARZ at 500 Hz?
The AD629ARZ has a minimum CMRR of 77 dB (AD629A) and 86 dB (AD629B) at 500 Hz.
- What is the bandwidth of the AD629ARZ?
The AD629ARZ has a bandwidth of 500 kHz.
- What is the maximum power supply current of the AD629ARZ?
The maximum power supply current of the AD629ARZ is 1 mA.
- In what packages is the AD629ARZ available?
The AD629ARZ is available in 8-lead PDIP and 8-lead SOIC packages.
- What is the guaranteed temperature range for the AD629ARZ?
The performance of the AD629ARZ is guaranteed over the industrial temperature range of −40°C to +85°C.
