Overview
The ADA4938-2ACPZ-R7 is a dual, ultralow distortion, high-speed differential amplifier produced by Analog Devices Inc. It is designed to drive high-performance analog-to-digital converters (ADCs) with resolutions up to 16 bits from DC to 27 MHz, or up to 12 bits from DC to 74 MHz. This amplifier is fabricated using Analog Devices' proprietary third-generation, high-voltage XFCB process, which enables very low levels of distortion and excellent dynamic performance.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Noise | 2.6 nV/√Hz | |
| Harmonic Distortion (HD2, HD3) | -106 dBc (HD2 at 10 MHz), -109 dBc (HD3 at 10 MHz) | VOUT = 2 V p-p, G = +1 |
| Bandwidth | -3 dB bandwidth of 1000 MHz, G = +1 | |
| Slew Rate | 4700 V/us | |
| Offset Voltage | 1 mV typical | |
| Supply Voltage Range | +5 V to ±5 V | |
| Operating Temperature Range | -40°C to +85°C | |
| Package | 24-Lead LFCSP (4mm x 4mm x 0.75mm w/ EP) |
Key Features
- Ultralow distortion and noise, making it ideal for high-performance ADC drivers.
- High-speed operation with a -3 dB bandwidth of 1000 MHz and a slew rate of 4700 V/us.
- Adjustable output common-mode voltage to match the input of the ADC.
- Internal common-mode feedback loop for exceptional output balance and suppression of even-order harmonic distortion.
- Differential-to-differential or single-ended-to-differential operation.
- Fast overdrive recovery time of 4 ns.
- Wide supply voltage range and low quiescent current.
Applications
- Driving high-performance ADCs in data acquisition systems.
- Single-ended-to-differential converters.
- IF and baseband gain blocks.
- Differential buffers and line drivers.
- Various signal processing applications requiring low noise and high dynamic performance.
Q & A
- What is the primary application of the ADA4938-2ACPZ-R7?
The ADA4938-2ACPZ-R7 is primarily used for driving high-performance analog-to-digital converters (ADCs) in data acquisition systems.
- What are the key features of the ADA4938-2ACPZ-R7?
Key features include ultralow distortion, high-speed operation, adjustable output common-mode voltage, internal common-mode feedback loop, and fast overdrive recovery.
- What is the input voltage noise of the ADA4938-2ACPZ-R7?
The input voltage noise is 2.6 nV/√Hz.
- What is the bandwidth of the ADA4938-2ACPZ-R7?
The -3 dB bandwidth is 1000 MHz at a gain of +1.
- What is the slew rate of the ADA4938-2ACPZ-R7?
The slew rate is 4700 V/us.
- What is the typical offset voltage of the ADA4938-2ACPZ-R7?
The typical offset voltage is 1 mV.
- What is the operating temperature range of the ADA4938-2ACPZ-R7?
The operating temperature range is -40°C to +85°C.
- What package options are available for the ADA4938-2ACPZ-R7?
The ADA4938-2ACPZ-R7 is available in a 24-Lead LFCSP (4mm x 4mm x 0.75mm w/ EP) package.
- Can the ADA4938-2ACPZ-R7 be used in single-ended-to-differential configurations?
- What is the supply voltage range for the ADA4938-2ACPZ-R7?
The supply voltage range is +5 V to ±5 V.
