Overview
The AD9691BCPZRL7-1250 is a dual, 14-bit, 1.25 GSPS analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for low power consumption, small size, and ease of use, making it ideal for various high-speed applications. The AD9691 features an on-chip buffer and sample-and-hold circuit, supporting the sampling of wide bandwidth analog signals up to 1.5 GHz. It is particularly suited for intermediate frequency (IF) sampling and includes integrated output error correction logic and a multistage, differential pipelined architecture.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14-bit |
| Sampling Rate | 1.25 GSPS |
| Analog Input Bandwidth | Up to 1.5 GHz |
| Power Consumption per Channel | 1.9 W |
| Input Termination | Programmable: 400 Ω, 200 Ω, 100 Ω, 50 Ω differential |
| Output Interface | JESD204B, configurable in one-, two-, four-, or eight-lane configurations |
| Package | 88-Lead LFCSP (12mm x 12mm) |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Low power consumption analog core with 1.9 W per channel.
- Wide full power bandwidth supporting IF sampling of signals up to 1.5 GHz.
- Buffered inputs with programmable input termination to ease filter design and implementation.
- Flexible serial port interface (SPI) for controlling various product features and functions.
- Programmable fast overrange detection to avoid overrange conditions at the ADC input.
- Integrated voltage reference to simplify design considerations.
- Each ADC data output is internally connected to two digital downconverters (DDCs), each consisting of a 12-bit frequency translator (NCO) and four half-band decimation filters.
- Multiple device synchronization supported through the SYSREF± input pins.
Applications
- Communications: wideband receivers and digital predistortion.
- Instrumentation: spectrum analyzers, network analyzers, integrated RF test solutions.
- DOCSIS 3.x CMTS upstream receive paths.
- High speed data acquisition systems.
Q & A
- What is the resolution and sampling rate of the AD9691BCPZRL7-1250?
The AD9691BCPZRL7-1250 is a 14-bit ADC with a sampling rate of 1.25 GSPS.
- What is the maximum analog input bandwidth supported by the AD9691?
The AD9691 supports analog input bandwidths up to 1.5 GHz.
- What is the power consumption per channel of the AD9691?
The power consumption per channel is 1.9 W.
- What types of input termination are available on the AD9691?
The input termination is programmable and can be set to 400 Ω, 200 Ω, 100 Ω, or 50 Ω differential.
- What output interface does the AD9691 use?
The AD9691 uses a JESD204B output interface, configurable in one-, two-, four-, or eight-lane configurations.
- What is the package type and size of the AD9691?
The AD9691 is packaged in an 88-Lead LFCSP with dimensions of 12mm x 12mm.
- What is the operating temperature range of the AD9691?
The operating temperature range is -40°C to +85°C.
- Does the AD9691 support multiple device synchronization?
Yes, multiple device synchronization is supported through the SYSREF± input pins.
- What are some of the key applications of the AD9691?
The AD9691 is used in communications (wideband receivers and digital predistortion), instrumentation (spectrum analyzers, network analyzers), DOCSIS 3.x CMTS upstream receive paths, and high speed data acquisition systems.
- Does the AD9691 have integrated digital downconverters (DDCs)?
Yes, each ADC data output is internally connected to two DDCs, each consisting of a 12-bit frequency translator (NCO) and four half-band decimation filters.
