Overview
The AD9634BCPZRL7-250 is a 12-bit, analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed to support communications applications where low cost, small size, wide bandwidth, and versatility are essential. The AD9634 features a multistage, differential pipelined architecture with integrated output error correction logic and wide bandwidth inputs that can support various user-selectable input ranges. It is particularly suited for applications requiring high sampling speeds and excellent signal-to-noise ratio (SNR) performance.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | Up to 250 MSPS |
| Input Type | Differential |
| Data Interface | LVDS (ANSI-644 levels) - Parallel |
| Architecture | Pipelined |
| Reference Type | Internal |
| Supply Voltage (Analog/Digital) | 1.7 V to 1.9 V |
| Power Consumption | 360 mW at 250 MSPS |
| Temperature Range | −40°C to +85°C |
| Package | 32-Lead LFCSP (5mm x 5mm x 0.75mm) |
Key Features
- SNR = 69.7 dBFS at 185 MHz AIN and 250 MSPS
- SFDR = 87 dBc at 185 MHz AIN and 250 MSPS
- −150.6 dBFS/Hz input noise at 185 MHz, −1 dBFS AIN and 250 MSPS
- Flexible analog input range: 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal)
- Internal ADC voltage reference
- Integer 1-to-8 input clock divider (625 MHz maximum input)
- Fast overrange and threshold detect
- Proprietary differential input maintains excellent SNR performance for input frequencies up to 350 MHz
- 3-pin, 1.8 V SPI port for register programming and readback
- Pin compatibility with the AD9642 and AD6672
- Flexible power-down options for significant power savings
Applications
- Communications
- 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 AD9634?
The AD9634 can sample at rates of up to 250 MSPS.
- What is the input type of the AD9634?
The AD9634 has differential inputs.
- What is the data interface of the AD9634?
The AD9634 uses LVDS (ANSI-644 levels) - Parallel data interface.
- What is the power consumption of the AD9634 at 250 MSPS?
The power consumption is 360 mW at 250 MSPS.
- What is the temperature range of the AD9634?
The AD9634 is specified over the industrial temperature range of −40°C to +85°C.
- What package type is the AD9634 available in?
The AD9634 is available in a 32-Lead LFCSP package.
- Does the AD9634 have an internal voltage reference?
Yes, the AD9634 has an internal ADC voltage reference.
- What is the flexible analog input range of the AD9634?
The flexible analog input range is 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal).
- Can the AD9634 be used in ultrasound equipment?
Yes, the AD9634 can be used in ultrasound equipment.
- How is the programming for setup and control accomplished on the AD9634?
Programming for setup and control is accomplished using a 3-pin, 1.8 V SPI-compatible serial interface.
