Overview
The ADA4938-1ACPZ-R7 is a high-performance, low noise, ultralow distortion differential amplifier produced by Analog Devices Inc. This device is part of the ADA4938 series, which includes both single and dual amplifier configurations. The ADA4938-1ACPZ-R7 is specifically a single amplifier configuration, making it ideal for applications requiring high-speed and low distortion signal processing.
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. The amplifier features adjustable gain, adjustable output common-mode voltage, and fast overdrive recovery, making it versatile for various signal processing tasks.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| −3 dB Bandwidth | 1000 MHz | G = +1 |
| Slew Rate | 4700 V/μs | |
| Gain Flatness | 0.1 dB to 150 MHz | |
| Overdrive Recovery Time | 4 ns | |
| Offset Voltage | 1 mV typical | |
| Supply Voltage Range | +5 V to ±5 V | |
| Quiescent Current per Amplifier | 37 mA to 40 mA | |
| Operating Temperature Range | −40°C to +85°C | |
| Package Type | 16-Lead LFCSP |
Key Features
- Low noise and ultralow distortion, making it suitable for high-performance ADC driving.
- High speed with a −3 dB bandwidth of 1000 MHz and a slew rate of 4700 V/μs.
- Externally adjustable gain and adjustable output common-mode voltage.
- Differential-to-differential or single-ended-to-differential operation.
- Fast overdrive recovery of 4 ns.
- Wide supply voltage range from +5 V to ±5 V.
- Low input voltage noise and high harmonic distortion performance (HD2 and HD3).
- Power-down feature with low current consumption.
Applications
- ADC drivers for high-performance analog-to-digital converters.
- Single-ended-to-differential converters.
- IF and baseband gain blocks.
- Differential buffers and line drivers.
- Data acquisition and signal processing systems.
Q & A
- What is the primary application of the ADA4938-1ACPZ-R7?
The primary application is driving high-performance analog-to-digital converters (ADCs) with resolutions up to 16 bits.
- What is the bandwidth of the ADA4938-1ACPZ-R7?
The −3 dB bandwidth is 1000 MHz at a gain of +1.
- What is the slew rate of the ADA4938-1ACPZ-R7?
The slew rate is 4700 V/μs.
- Can the gain of the ADA4938-1ACPZ-R7 be adjusted?
- What is the operating temperature range of the ADA4938-1ACPZ-R7?
The operating temperature range is −40°C to +85°C.
- What is the typical offset voltage of the ADA4938-1ACPZ-R7?
The typical offset voltage is 1 mV.
- What types of packages are available for the ADA4938 series?
The ADA4938-1 is available in a 16-Lead LFCSP package, while the ADA4938-2 is available in a 24-Lead LFCSP package.
- Does the ADA4938-1ACPZ-R7 support power-down mode?
- What is the quiescent current per amplifier for the ADA4938-1ACPZ-R7?
The quiescent current per amplifier is between 37 mA and 40 mA.
- What are some common applications of the ADA4938-1ACPZ-R7 besides ADC drivers?
Besides ADC drivers, common applications include single-ended-to-differential converters, IF and baseband gain blocks, differential buffers, and line drivers.
