Overview
The ADA4939-1YCPZ-R7 is a low noise, 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 100 MHz. The amplifier is fabricated using Analog Devices' proprietary silicon-germanium (SiGe) complementary bipolar process, which enables it to achieve very low levels of distortion and an input voltage noise of only 2.3 nV/√Hz. This makes it an ideal choice for a wide variety of data acquisition and signal processing applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Noise | 2.3 | nV/√Hz |
| -3 dB Bandwidth (G = 2) | 1.4 | GHz |
| Slew Rate (25% to 75%) | 6800 | V/μs |
| Overdrive Recovery Time | <1 | ns |
| Offset Voltage | ±0.5 | mV |
| Operating Supply Voltage | 3.3 to 5 | V |
| Operating Temperature Range | -40 to +105 | °C |
| Package Type | 16-Lead LFCSP (3mm x 3mm w/ EP) | |
| Quiescent Current per Amplifier | 35.1 to 37.7 | mA |
Key Features
- Extremely low harmonic distortion: -102 dBc HD2 at 10 MHz, -83 dBc HD2 at 70 MHz, and -77 dBc HD2 at 100 MHz.
- Low input voltage noise: 2.3 nV/√Hz.
- High speed: -3 dB bandwidth of 1.4 GHz, G = 2, and a slew rate of 6800 V/μs, 25% to 75%.
- Fast overdrive recovery of less than 1 ns.
- Externally adjustable gain and stable for differential gains ≥2.
- Differential-to-differential or single-ended-to-differential operation.
- Adjustable output common-mode voltage.
- Single-supply operation: 3.3 V to 5 V.
Applications
- ADC drivers for high-performance ADCs with resolutions up to 16 bits.
- Single-ended-to-differential converters.
- IF and baseband gain blocks.
- Differential buffers.
- Line drivers.
Q & A
- What is the primary application of the ADA4939-1YCPZ-R7?
The ADA4939-1YCPZ-R7 is primarily used as an ADC driver for high-performance Analog-to-Digital Converters (ADCs) with resolutions up to 16 bits from DC to 100 MHz.
- What is the input voltage noise of the ADA4939-1YCPZ-R7?
The input voltage noise of the ADA4939-1YCPZ-R7 is 2.3 nV/√Hz).
- What is the -3 dB bandwidth of the ADA4939-1YCPZ-R7?
The -3 dB bandwidth of the ADA4939-1YCPZ-R7 is 1.4 GHz at a gain of 2).
- How does the ADA4939-1YCPZ-R7 handle overdrive recovery?
The ADA4939-1YCPZ-R7 has a fast overdrive recovery time of less than 1 ns).
- Can the gain of the ADA4939-1YCPZ-R7 be adjusted externally?
- What are the operating supply voltage and temperature ranges for the ADA4939-1YCPZ-R7?
The ADA4939-1YCPZ-R7 operates on supplies between 3.3 V and 5 V and over a temperature range of -40°C to +105°C).
- What package type is the ADA4939-1YCPZ-R7 available in?
The ADA4939-1YCPZ-R7 is available in a 16-Lead LFCSP (3mm x 3mm w/ EP) package).
- What are some other applications of the ADA4939-1YCPZ-R7 besides ADC drivers?
Besides ADC drivers, the ADA4939-1YCPZ-R7 can be used as single-ended-to-differential converters, IF and baseband gain blocks, differential buffers, and line drivers).
- How does the ADA4939-1YCPZ-R7 manage output common-mode voltage?
The ADA4939-1YCPZ-R7 allows the output common-mode voltage to be adjusted using an internal common-mode feedback loop, enabling it to match the input of the ADC).
- What is the quiescent current per amplifier for the ADA4939-1YCPZ-R7?
The quiescent current per amplifier for the ADA4939-1YCPZ-R7 is between 35.1 mA and 37.7 mA).
