Overview
The ADA4922-1ARDZ-RL, manufactured by Analog Devices Inc., is a high-voltage, differential driver designed for 16-bit to 18-bit analog-to-digital converters (ADCs). This component is configured as a single-ended-to-differential amplifier, requiring no external components to drive ADCs. It is built on Analog Devices' proprietary second-generation XFCB process, which ensures excellent noise and distortion performance, particularly at high supply voltages. The ADA4922-1 is available in 8-lead 3 mm × 3 mm LFCSP and 8-lead SOIC packages, both with an exposed paddle for enhanced heat transfer. It operates over an extended industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| –3 dB Bandwidth (G = +2, VO = 0.2 V p-p, differential) | 34 | 38 | MHz | VS = ±12 V, TA = 25°C, RL = 1 kΩ, DIS = high, CL = 3 pF | |
| –3 dB Bandwidth (G = +2, VO = 40 V p-p, differential) | 6.5 | 7.2 | MHz | VS = ±12 V, TA = 25°C, RL = 1 kΩ, DIS = high, CL = 3 pF | |
| Overdrive Recovery Time (+Recovery/−Recovery) | 180/330 | ns | VS+ + 0.5 V to VS− − 0.5 V | ||
| Slew Rate (VO, dm = 2 V step) | 260 | V/µs | |||
| Output Voltage Swing (Each single-ended output, RL = 1 kΩ) | ±3.55 | ±3.6 | V | ||
| DC Output Current | 40 | mA | |||
| Power Supply Operating Range | 5 | 26 | V | ||
| Quiescent Current | 7.0 | 7.6 | mA | ||
| Power Supply Rejection Ratio (PSRR) -PSRR | −93 | −82 | dB | ||
| DISABLE DIS Input Voltage (Disabled/Enabled) | ≤ −4 V / ≥ −2 V |
Key Features
- High Voltage Capability: The ADA4922-1 can handle differential input ranges up to ±20 V, making it suitable for a variety of high-voltage applications.
- Low Distortion and High SNR: The component is designed to provide low distortion and high signal-to-noise ratio (SNR), which are essential for driving high-resolution ADCs.
- Wide Supply Voltage Range: It operates with a supply voltage range of 5 V to 26 V, offering flexibility in different power supply scenarios.
- High Input Impedance: The ADA4922-1 features high input impedance, which is beneficial for minimizing loading effects on the input signal.
- Fixed Differential Gain of 2: This fixed gain simplifies the design process and ensures consistent performance across different applications.
- Compact Packaging: Available in 8-lead 3 mm × 3 mm LFCSP and 8-lead SOIC packages, both with an exposed paddle for efficient heat transfer.
- Extended Industrial Temperature Range: The component is rated to operate over a temperature range of −40°C to +85°C, making it suitable for industrial environments.
Applications
- Industrial Instrumentation: The ADA4922-1 is well-suited for industrial instrumentation applications due to its high voltage capability and robust performance over a wide temperature range.
- Medical Instruments: Its low distortion and high SNR make it an ideal choice for medical instruments that require precise signal processing.
- Spectrum Analysis and ATE (Automated Test Equipment): The component's high performance and reliability make it suitable for spectrum analysis and automated test equipment applications.
Q & A
- What is the primary function of the ADA4922-1?
The ADA4922-1 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 maximum differential input range of the ADA4922-1?
The ADA4922-1 can handle differential input ranges up to ±20 V.
- What are the available package types for the ADA4922-1?
The ADA4922-1 is available in 8-lead 3 mm × 3 mm LFCSP and 8-lead SOIC packages.
- What is the operating temperature range of the ADA4922-1?
The component operates over an extended industrial temperature range of −40°C to +85°C.
- What is the power supply operating range of the ADA4922-1?
The power supply operating range is from 5 V to 26 V).
- How does the ADA4922-1 manage heat dissipation?
The component features an exposed paddle in both package types for efficient heat transfer).
- What are some key applications of the ADA4922-1?
Key applications include industrial instrumentation, medical instruments, and spectrum analysis and ATE (Automated Test Equipment)).
- What is the typical quiescent current of the ADA4922-1?
The typical quiescent current is 7.6 mA).
- How does the ADA4922-1 perform in terms of distortion and SNR?
The component provides low distortion and high signal-to-noise ratio (SNR), making it suitable for high-resolution ADCs).
- Is the ADA4922-1 still in production?
No, the ADA4922-1ARDZ-RL is listed as obsolete and no longer manufactured).
