Overview
The AD9643BCPZ-250 is a dual, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed to support communications applications where low cost, small size, wide bandwidth, and versatility are essential. The AD9643 features a multistage, differential pipelined architecture with integrated output error correction logic, ensuring high performance and accuracy. It operates from a single 1.8 V supply and includes a separate digital output driver supply to accommodate LVDS outputs. The device is available in a 64-lead LFCSP package and is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14-bit |
| Sampling Rate | Up to 250 MSPS |
| Signal-to-Noise Ratio (SNR) | 70.6 dBFS at 185 MHz AIN and 250 MSPS |
| Spurious-Free Dynamic Range (SFDR) | 85 dBc at 185 MHz AIN and 250 MSPS |
| Input Noise | −151.6 dBFS/Hz at 185 MHz, −1 dBFS AIN and 250 MSPS |
| Total Power Consumption | 785 mW at 250 MSPS |
| Supply Voltage | 1.8 V |
| Output Type | LVDS (ANSI-644 levels) |
| Input Clock Divider | Integer 1-to-8, 625 MHz maximum input |
| Analog Input Range | 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal) |
| Channel Isolation/Crosstalk | 95 dB |
| Package Type | 64-Lead LFCSP (9mm x 9mm w/ EP) |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- Integrated dual, 14-bit ADCs with sampling speeds of up to 250 MSPS.
- Operation from a single 1.8 V supply and a separate digital output driver supply accommodating LVDS outputs.
- Proprietary differential input maintains excellent SNR performance for input frequencies of up to 400 MHz.
- SYNC input allows synchronization of multiple devices.
- 3-pin, 1.8 V SPI port for register programming and register readback.
- Pin compatibility with the AD9613, AD6649, and AD6643.
- Internal ADC voltage reference and ADC clock duty cycle stabilizer.
- Flexible analog input range (1.4 V p-p to 2.0 V p-p, 1.75 V p-p nominal).
- Energy saving power-down modes.
- Serial port control for setup and control.
Applications
- Communications systems.
- Diversity radio systems.
- Multimode digital receivers (3G, TD-SCDMA, WiMax, WCDMA, CDMA2000, GSM, EDGE, LTE).
- I/Q demodulation systems.
- Smart antenna systems.
- General-purpose software radios.
- Ultrasound equipment.
- Broadband data applications.
Q & A
- What is the resolution of the AD9643BCPZ-250?
The AD9643BCPZ-250 has a resolution of 14 bits.
- What are the sampling rates supported by the AD9643BCPZ-250?
The AD9643BCPZ-250 supports sampling rates of up to 250 MSPS.
- What is the signal-to-noise ratio (SNR) of the AD9643BCPZ-250 at 185 MHz AIN and 250 MSPS?
The SNR is 70.6 dBFS at 185 MHz AIN and 250 MSPS.
- What is the spurious-free dynamic range (SFDR) of the AD9643BCPZ-250 at 185 MHz AIN and 250 MSPS?
The SFDR is 85 dBc at 185 MHz AIN and 250 MSPS.
- What is the total power consumption of the AD9643BCPZ-250 at 250 MSPS?
The total power consumption is 785 mW at 250 MSPS.
- What type of output does the AD9643BCPZ-250 use?
The AD9643BCPZ-250 uses LVDS (ANSI-644 levels) outputs.
- What is the maximum input clock frequency for the AD9643BCPZ-250?
The maximum input clock frequency is 625 MHz.
- What is the operating temperature range of the AD9643BCPZ-250?
The operating temperature range is −40°C to +85°C.
- What type of package does the AD9643BCPZ-250 come in?
The AD9643BCPZ-250 comes in a 64-Lead LFCSP (9mm x 9mm w/ EP) package.
- Does the AD9643BCPZ-250 support power-down modes?
Yes, the AD9643BCPZ-250 supports energy saving power-down modes.
