Overview
The AD9640ABCPZRL7-125, produced by Analog Devices Inc., is a dual 14-bit analog-to-digital converter (ADC) designed for high-performance applications. This ADC supports sampling rates of 80, 105, 125, and 150 MSPS, making it suitable for various communication systems. The device features a multistage, differential pipelined architecture with integrated output error correction logic and wide bandwidth differential sample-and-hold analog input amplifiers. It operates from a single 1.8 V analog supply and offers flexible digital output options, including 1.8 V to 3.3 V CMOS or 1.8 V LVDS. The AD9640 is packaged in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rates | 80, 105, 125, 150 MSPS |
| SNR (70 MHz @ 125 MSPS) | 71.8 dBc (72.8 dBFS) |
| SNR (70 MHz @ 150 MSPS) | 71.6 dBc (72.6 dBFS) |
| SFDR (70 MHz @ 125 MSPS) | 85 dBc |
| SFDR (70 MHz @ 150 MSPS) | 84 dBc |
| Power Consumption (125 MSPS) | 750 mW |
| Power Consumption (150 MSPS) | 820 mW |
| Analog Supply Voltage | 1.8 V |
| Digital Output Supply Voltage | 1.8 V to 3.3 V CMOS or 1.8 V LVDS |
| Input Clock Divider | Integer 1 to 8 |
| IF Sampling Frequencies | Up to 450 MHz |
| Analog Input Range | 1 V P-P to 2 V P-P |
| Package Type | 64-Lead LFCSP (9mm x 9mm w/ EP) |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- Integrated dual 14-bit ADC with multistage, differential pipelined architecture and integrated output error correction logic.
- Fast overrange detect and signal monitor with serial output.
- Proprietary differential input maintaining excellent SNR performance for input frequencies up to 450 MHz.
- Operation from a single 1.8 V supply and a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
- Flexible analog input range: 1 V P-P to 2 V P-P.
- Internal ADC voltage reference and integrated sample-and-hold inputs.
- Programmable threshold detector for monitoring incoming signal power.
- Flexible power-down options for significant power savings.
- 3-bit SPI-compatible serial interface for setup and control.
- Pin compatibility with AD9627, AD9627-11, and AD9600 for easy migration.
Applications
- Communications systems.
- Diversity radio systems.
- Multimode digital receivers (GSM, EDGE, WCDMA, LTE, CDMA2000, WiMAX, TD-SCDMA).
Q & A
- What is the resolution of the AD9640 ADC?
The AD9640 is a dual 14-bit analog-to-digital converter. - What are the supported sampling rates of the AD9640?
The AD9640 supports sampling rates of 80, 105, 125, and 150 MSPS. - What is the SNR of the AD9640 at 125 MSPS for a 70 MHz input signal?
The SNR is 71.8 dBc (72.8 dBFS) at 125 MSPS for a 70 MHz input signal. - What is the power consumption of the AD9640 at 125 MSPS?
The power consumption is 750 mW at 125 MSPS. - What are the available digital output supply voltages for the AD9640?
The digital output supply voltages can be set from 1.8 V to 3.3 V CMOS or 1.8 V LVDS. - What is the maximum IF sampling frequency supported by the AD9640?
The AD9640 supports IF sampling frequencies up to 450 MHz. - What is the operating temperature range of the AD9640?
The operating temperature range is −40°C to +85°C. - How is the AD9640 packaged?
The AD9640 is packaged in a 64-Lead LFCSP (9mm x 9mm w/ EP). - What interface is used for setup and control of the AD9640?
A 3-bit SPI-compatible serial interface is used for setup and control. - In which applications is the AD9640 commonly used?
The AD9640 is commonly used in communications systems, diversity radio systems, and multimode digital receivers.
