Overview
The AD9634BCPZ-210, produced by Analog Devices Inc., is a 12-bit analog-to-digital converter (ADC) designed to support a wide range of communications and high-speed applications. This ADC features sampling speeds of up to 250 million samples per second (MSPS), making it suitable for low-cost, small-size, wide-bandwidth, and versatile applications. The AD9634 incorporates a multistage, differential pipelined architecture with integrated output error correction logic and an internal ADC voltage reference, which simplifies design considerations. It is available in a 32-lead LFCSP package and operates over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Sampling Rate | Up to 250 MSPS |
| Signal-to-Noise Ratio (SNR) | 69.7 dBFS at 185 MHz AIN and 250 MSPS |
| Spurious-Free Dynamic Range (SFDR) | 87 dBc at 185 MHz AIN and 250 MSPS |
| Input Noise | −150.6 dBFS/Hz at 185 MHz, −1 dBFS AIN and 250 MSPS |
| Total Power Consumption | 360 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) |
| Package Type | 32-Lead LFCSP (5mm x 5mm x 0.75mm) |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- Integrated 12-bit ADC with sampling speeds of up to 250 MSPS.
- Proprietary differential input maintains excellent SNR performance for input frequencies up to 350 MHz.
- Fast overrange and threshold detect.
- 3-pin, 1.8 V SPI port for register programming and readback.
- Pin compatibility with the AD9642 and AD6672, allowing simple migration to 14-bit ADCs.
- Internal ADC voltage reference and duty cycle stabilizer (DCS) to compensate for ADC clock duty cycle variations.
- Flexible analog input range of 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal).
- Energy-saving power-down modes.
- LVDS (ANSI-644 levels) outputs.
Applications
- Communications systems.
- Diversity radio systems.
- Multimode digital receivers (3G): TD-SCDMA, WiMAX, W-CDMA, 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 maximum sampling rate of the AD9634BCPZ-210?
The maximum sampling rate of the AD9634BCPZ-210 is up to 250 MSPS.
- What is the resolution of the AD9634BCPZ-210?
The resolution of the AD9634BCPZ-210 is 12-bit.
- What is the signal-to-noise ratio (SNR) of the AD9634BCPZ-210 at 185 MHz AIN and 250 MSPS?
The SNR is 69.7 dBFS at 185 MHz AIN and 250 MSPS.
- What type of output does the AD9634BCPZ-210 use?
The AD9634BCPZ-210 uses LVDS (ANSI-644 levels) outputs.
- What is the operating temperature range of the AD9634BCPZ-210?
The operating temperature range is −40°C to +85°C.
- Does the AD9634BCPZ-210 have an internal voltage reference?
Yes, the AD9634BCPZ-210 has an internal ADC voltage reference.
- What is the total power consumption of the AD9634BCPZ-210 at 250 MSPS?
The total power consumption is 360 mW at 250 MSPS.
- What are the key applications of the AD9634BCPZ-210?
The key applications include communications systems, diversity radio systems, multimode digital receivers, I/Q demodulation systems, smart antenna systems, general-purpose software radios, ultrasound equipment, and broadband data applications.
- How is the setup and control of the AD9634BCPZ-210 accomplished?
Programming for setup and control is accomplished using a 3-wire, SPI-compatible serial interface.
- Does the AD9634BCPZ-210 support power-down modes?
Yes, the AD9634BCPZ-210 supports energy-saving power-down modes.
