Overview
The AD9642BCPZRL7-250 is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed to support a wide range of communications applications, emphasizing low cost, small size, wide bandwidth, and versatility. The ADC features a multistage, differential pipelined architecture with integrated output error correction logic and an internal voltage reference, which simplifies design considerations. It operates from a single 1.8 V supply and a separate digital output driver supply, accommodating LVDS outputs. The AD9642 is available in a 32-lead Lead Frame Chip Scale Package (LFCSP) and is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Sampling Rate | 170 | 210 | 250 | MSPS |
| Input Clock Rate | 625 MHz | |||
| CLK Period—Divide-by-1 Mode (tCLK) | 5.8 | 4.8 | 4 | ns |
| CLK Pulse Width High (tCH) Divide-by-1 Mode, DCS Enabled | 2.61 | 2.9 | 3.19 | ns |
| Aperture Delay (tA) | 1.0 | ns | ||
| Supply Voltage | 1.8 V | |||
| Total Power Consumption at 250 MSPS | 390 mW | |||
| Operating Temperature Range | -40 | 85 | °C | |
Key Features
- Integrated 14-bit ADC 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 350 MHz.
- 3-pin, 1.8 V SPI port for register programming and readback.
- Pin compatibility with the AD9634 and AD6672, allowing simple migration between different bit resolutions.
- Internal ADC voltage reference and duty cycle stabilizer (DCS) to maintain excellent performance.
- Flexible analog input range of 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal).
- Integer 1-to-8 input clock divider (625 MHz maximum input).
- Flexible power-down options for significant power savings).
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 AD9642BCPZRL7-250 ADC?
The AD9642BCPZRL7-250 is a 14-bit analog-to-digital converter.
- What are the sampling rates supported by the AD9642BCPZRL7-250?
The AD9642BCPZRL7-250 supports sampling rates of up to 170 MSPS, 210 MSPS, and 250 MSPS.
- What is the input clock rate of the AD9642BCPZRL7-250?
The input clock rate is up to 625 MHz.
- What is the supply voltage for the AD9642BCPZRL7-250?
The device operates from a single 1.8 V supply and a separate digital output driver supply.
- What is the total power consumption of the AD9642BCPZRL7-250 at 250 MSPS?
The total power consumption at 250 MSPS is 390 mW.
- What is the operating temperature range of the AD9642BCPZRL7-250?
The operating temperature range is from −40°C to +85°C.
- What type of output does the AD9642BCPZRL7-250 use?
The ADC output data is routed directly to the external 14-bit LVDS output port.
- How is the AD9642BCPZRL7-250 programmed?
Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.
- What are some of the key applications of the AD9642BCPZRL7-250?
The device is used in 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.
- What package type is the AD9642BCPZRL7-250 available in?
The AD9642BCPZRL7-250 is available in a 32-lead Lead Frame Chip Scale Package (LFCSP).
