Features and Benefits
- Wide range of operating voltages
- Dual-supply: ±12 V to ±110 V
- Asymmetrical supply operation: 24 V to 220 V
- Wide input common-mode voltage range: 3 V from rails
- High common-mode rejection ratio: 160 dB typical
- High AOL: 170 dB typical
- High slew rate
- 74 V/μs typical
- 24 V/μs typical with external input clamping diodes
- Low input bias current: 2 pA maximum
- Low input offset voltage: 1 mV maximum
- Low input offset voltage drift: 2 μV/°C maximum
- Low input voltage noise: 8 nV/√Hz typical at 10 kHz
- Wide small signal bandwidth: 10 MHz typical
- Resistor adjustable quiescent current: 0.6 mA to 3 mA (VS = ±110 V)
- Unity-gain stable
- Thermal monitoring
- Small footprint: 12-lead, 7 mm × 7 mm LFCSP compliant with IEC 61010-1 spacing
- Shutdown mode
The ADHV4702-1 is a high voltage (220 V), unity-gain stable precision operational amplifier. The ADHV4702-1 offers high input impedance with low input bias current, low input offset voltage, low drift, and low noise for precision demanding applications. The next generation of proprietary semiconductor processes and innovative architecture from Analog Devices, Inc., enable this precision operational amplifier to operate from symmetrical dual supplies of ±110 V, asymmetrical dual supplies, or a single supply of 220 V. The ADHV4702-1 requires a minimum supply voltage of ±12 V from the reference voltage for normal operation.
For precision performance, the ADHV4702-1 has a 170 dB typical open-loop gain (AOL) and a 160 dB typical common-mode rejection ratio (CMRR). The ADHV4702-1 also has a 2 μV/°C maximum input offset voltage (VOS) drift and an 8 nV/√Hz input voltage noise.
The exceptional dc precision of the ADHV4702-1 is complemented by excellent dynamic performance with a small signal bandwidth of 10 MHz and a slew rate of 74 V/μs. The ADHV4702-1 has an output current of 20 mA typical.
The ADHV4702-1 offers high voltage input common-mode swing as well as high voltage output swing, enabling precision high voltage use cases such as high-side current sensing. The ADHV4702-1 is also ideally suited for forcing a voltage in precision bias and control applications.
The ADHV4702-1 is available in a 12-lead, 7 mm × 7 mm lead frame chip scale package (LFCSP) with an exposed pad (EPAD) compliant to international electrotechnical commission (IEC) 61010-1 creepage and clearance standards. The copper EPAD provides a low thermal resistance path to improve heat dissipation and features high voltage isolation, allowing it to be safely connected to a 0 V ground plane regardless of VCC or VEE voltages. The ADHV4702-1 operates over the −40°C to +85°C industrial temperature range.
- High-side current sensing
- Automated test equipment
- High voltage drivers
- Digital-to-analog converter (DAC) output buffers
- Light detecting and ranging (LiDAR), avalanche photodiode (APD), single photon avalanche diode (SPAD) biasing
Markets & Technology
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
This user guide describes the EVAL-ADHV4702-1CPZ evaluation board, which helps users evaluate the ADHV4702-1 offered in a 7 mm × 7 mm, 12-lead lead frame chip scale package (LFCSP) with an exposed pad at the bottom. The evaluation board provides a platform for quick and easy evaluation of the ADHV4702-1. Figure 1 shows the top side of the evaluation board. Figure 2 shows the bottom side of the board with the large exposed copper area for attaching a heat sink to provide additional thermal management.
The evaluation board is a 6-layer board designed to minimize leakage currents with its guard ring feature. It accepts Subminiature Version A (SMA) and Subminiature Version B (SMB) edge mounted connectors on the inputs for easy connection to test equipment or other circuitry.
The ADHV4702-1 data sheet covers the specifications and details of the device operation and application circuit configurations and guidance. Full specifications of the ADHV4702-1 can be found in the ADHV4702-1 data sheet, available from Analog Devices, Inc., and must be consulted in conjunction with this user guide, especially when powering up the evaluation board for the first time.
For safety, the EVAL-ADHV4702-1CPZ evaluation board is covered top and bottom with acrylic plastic guards to reduce the risk of inadvertent contact with high voltage. Do not operate the board without these guards in place. If the guards must be removed to adjust jumpers or change component values, disconnect the board from the power supply before removing guards, and replace the guards before powering up again.
Features & Benefits
- Full featured evaluation board for the ADHV4702-1
- Single-supply or dual-supply operation
- On-board power management circuit generates high voltage
- Edge mounted SMA and SMB connector provisions
- Easy connection to test equipment and other circuits
- Robust thermal management
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Support & Discussions
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.