Overview
The AD629BRZ-RL, manufactured by Analog Devices Inc., is a high common-mode voltage difference amplifier. This precision device is designed to accurately measure differential signals in the presence of high common-mode voltages, making it an ideal solution for various industrial and high-voltage applications. The AD629BRZ-RL operates over a wide common-mode voltage range of ±270 V and features input protection up to ±500 V in both common-mode and differential mode. It is available in an 8-lead SOIC package and is RoHS compliant.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| GAIN | VOUT = ±10 V, RL = 2 kΩ | 1 | 1 | 1 | V/V |
| GAIN ERROR | 0.01 | 0.05 | 0.05 | % | |
| GAIN NONLINEARITY | RL = 2 kΩ | 4 | 10 | 10 | ppm |
| GAIN VS. TEMPERATURE | TA = TMIN to TMAX | 3 | 10 | 10 | ppm/°C |
| OFFSET VOLTAGE | 0.2 | 1 | 1 | mV | |
| OUTPUT SHORT-CIRCUIT CURRENT | ±25 | ±25 | ±25 | mA | |
| CAPACITIVE LOAD STABLE OPERATION | 1000 | 1000 | 1000 | pF | |
| SMALL SIGNAL –3 dB BANDWIDTH | 500 | 500 | 500 | kHz | |
| SLEW RATE | 1.7 | 2.1 | 2.1 | V/μs | |
| POWER SUPPLY OPERATING VOLTAGE RANGE | ±2.5 | ±18 | ±18 | V |
Key Features
- High input common-mode voltage range of ±270 V
- Input protection up to ±500 V in both common-mode and differential mode
- Low offset voltage and offset drift (0.2 mV to 1 mV, 10 μV/°C to 20 μV/°C)
- Low gain error and gain nonlinearity (0.01% to 0.05%, 4 ppm to 10 ppm)
- Excellent common-mode rejection ratio (CMRR) of up to 86 dB at 500 Hz
- Wide power supply range (±2.5 V to ±18 V)
- High bandwidth of 500 kHz and slew rate of 1.7 V/μs to 2.1 V/μs
- Available in 8-lead SOIC package and RoHS compliant
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 AD629BRZ-RL?
The AD629BRZ-RL has a common-mode voltage range of ±270 V.
- What is the maximum input protection voltage for the AD629BRZ-RL?
The inputs are protected from common-mode or differential mode transients up to ±500 V.
- What is the typical gain error of the AD629BRZ-RL?
The typical gain error is 0.05%.
- What is the bandwidth of the AD629BRZ-RL?
The bandwidth is 500 kHz.
- What is the slew rate of the AD629BRZ-RL?
The slew rate is between 1.7 V/μs and 2.1 V/μs.
- What is the operating temperature range of the AD629BRZ-RL?
The operating temperature range is −40°C to +85°C.
- What package types are available for the AD629BRZ-RL?
The AD629BRZ-RL is available in an 8-lead SOIC package.
- Is the AD629BRZ-RL RoHS compliant?
Yes, the AD629BRZ-RL is RoHS compliant.
- What are some typical applications of the AD629BRZ-RL?
Typical applications include high voltage current sensing, battery cell voltage monitors, power supply current monitors, and motor controls.
- How does the AD629BRZ-RL compare to isolation amplifiers?
The AD629BRZ-RL can replace costly isolation amplifiers in applications that do not require galvanic isolation.
