Overview
The ADA4922-1ARDZ is a high-voltage, differential amplifier designed by Analog Devices Inc. for driving 16-bit to 18-bit analog-to-digital converters (ADCs) with differential input ranges up to ±20 V. This single-ended-to-differential amplifier is configured for easy use and does not require any external components to drive ADCs. It is manufactured using Analog Devices' proprietary, second-generation XFCB process, which ensures excellent noise and distortion performance even at high supply voltages.
The ADA4922-1ARDZ offers key benefits such as low distortion and high signal-to-noise ratio (SNR), making it suitable for applications requiring high precision and reliability. It operates over a wide supply voltage range of 5 V to 26 V and has a fixed differential gain of 2. The amplifier is available in 8-lead LFCSP and 8-lead SOIC packages, both with an exposed paddle for efficient heat transfer, and is rated for the extended industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 5 | 26 | V | |
| Differential Gain | 2 | 2 | ||
| –3 dB Bandwidth (G = +2, VO = 0.2 V p-p, differential) | 34 | 38 | MHz | |
| –3 dB Bandwidth (G = +2, VO = 40 V p-p, differential) | 6.5 | 7.2 | MHz | |
| Slew Rate (VO, dm = 2 V step) | 260 | V/μs | ||
| Overdrive Recovery Time (+Recovery/−Recovery) | 180/330 | ns | ||
| Quiescent Current | 7.0 | 7.6 | mA | |
| Power Supply Rejection Ratio (PSRR) –PSRR | −93 | −82 | dB | |
| Power Supply Rejection Ratio (PSRR) +PSRR | −91 | −83 | dB | |
| Operating Temperature Range | −40 | +85 | °C |
Key Features
- Single-ended-to-differential amplifier configuration requiring no external components.
- Low distortion and high SNR, suitable for driving ADCs with resolutions up to 18 bits.
- Wide supply voltage range of 5 V to 26 V.
- Fixed differential gain of 2.
- High input impedance.
- Available in 8-lead LFCSP and 8-lead SOIC packages with exposed paddle for efficient heat transfer.
- Rated for extended industrial temperature range of −40°C to +85°C.
Applications
- Industrial instrumentation.
- Spectrum analysis and automated test equipment (ATE).
- Medical instruments.
- Any application requiring high precision and reliability in driving ADCs.
Q & A
- What is the primary function of the ADA4922-1ARDZ?
The ADA4922-1ARDZ is a differential driver for 16-bit to 18-bit analog-to-digital converters (ADCs), configured as a single-ended-to-differential amplifier.
- What is the supply voltage range of the ADA4922-1ARDZ?
The supply voltage range is from 5 V to 26 V.
- What are the key benefits of using the ADA4922-1ARDZ?
The key benefits include low distortion, high SNR, and the ability to drive ADCs with resolutions up to 18 bits without requiring external components.
- In what packages is the ADA4922-1ARDZ available?
The ADA4922-1ARDZ is available in 8-lead LFCSP and 8-lead SOIC packages, both with an exposed paddle for heat transfer.
- What is the operating temperature range of the ADA4922-1ARDZ?
The operating temperature range is from −40°C to +85°C.
- What are some typical applications of the ADA4922-1ARDZ?
Typical applications include industrial instrumentation, spectrum analysis, automated test equipment (ATE), and medical instruments.
- What is the differential gain of the ADA4922-1ARDZ?
The differential gain is fixed at 2.
- How does the ADA4922-1ARDZ handle overdrive recovery?
The overdrive recovery time is 180/330 ns for +recovery/−recovery.
- What is the slew rate of the ADA4922-1ARDZ?
The slew rate is 260 V/μs for a 2 V step.
- What is the power supply rejection ratio (PSRR) of the ADA4922-1ARDZ?
The PSRR is −93 dB to −82 dB for –PSRR and −91 dB to −83 dB for +PSRR.
