Datasheet AD9648-EP (Analog Devices)

14-Bit, 125 MSPS, 1.8 V Dual Analog-to-Digital Converter Enhanced Product AD9648-EP FEATURES FUNCTIONAL BLOCK DIAGRAM 1.8 V analog supply operation AVDD AGND SDIO SCLK CSB 1.8 V CMOS or LVDS outputs SNR = 74.5 dBFS at 70 MHz SPI SFDR = 91 dBc at 70 MHz ORA R S Low power: 106 mW/channel at 125 MSPS FFE VIN+A PROGRAMMING DATA VD D13A U L Differential analog input with 650 MHz bandwidth ADC S/ T B VIN–A U IF sampling frequencies to 200 MHz D0A MO C TP On-chip voltage reference and sample-and-hold circuit OU DCOA VREF 2 V p-p differential analog input TION DNL = ±0.5 LSB at 25°C SENSE DRVDD OP AD9648-EP X Serial port control options VCM REF U SELECT M Offset binary, gray code, or twos complement data format ORB RBIAS R S Optional clock duty cycle stabilizer FFE VIN–B D13B VD U L Integer 1-to-8 input clock divider ADC S/ T B VIN+B U Data output multiplex option D0B MO C TP Built-in selectable digital test pattern generation OU DCOB Energy-saving power-down modes DIVIDE DUTY CYCLE MODE Data clock out with programmable clock and data 1 TO 8 STABILIZER CONTROLS alignment CLK+ CLK– SYNC DCS PDWN DFS OEB ENHANCED PRODUCT FEATURES NOTES
001
Supports defense and aerospace applications (AQEC 1. PIN NAMES ARE FOR THE CMOS PIN CONFIGURATION ONLY; SEE FIGURE 7 FOR LVDS PIN NAMES.
13386-
standard)
Figure 1.
Military temperature range: −55°C to +125°C Controlled manufacturing baseline PRODUCT HIGHLIGHTS Qualification data available on request
1. The AD9648-EP operates from a single 1.8 V analog power supply and features a separate digital output driver supply
APPLICATIONS
to accommodate 1.8 V CMOS or LVDS logic families.
Communications
2. The sample-and-hold circuit maintains excellent
Diversity radio systems
performance for input frequencies up to 200 MHz and is
Multimode digital receivers
designed for low cost, low power, and ease of use.
GSM, EDGE, W-CDMA, LTE,
3. A standard serial port interface supports various product
CDMA2000, WiMAX, TD-SCDMA
features and functions, such as data output formatting,
I/Q demodulation systems
internal clock divider, power-down, DCO/data timing and
Smart antenna systems
offset adjustments.
Broadband data applications
4. The AD9648-EP is packaged in a 64-lead, RoHS-compliant
Battery-powered instruments
LFCSP that is pin-compatible with the AD9650/AD9269/
Handheld scope meters
AD9268 16-bit ADC, the AD9258 14-bit ADC, the AD9628/
Portable medical imaging
AD9231 12-bit ADCs, and the AD9608/AD9204 10-bit
Ultrasound
ADCs, enabling a simple migration path between 10-bit
Radar/LIDAR
and 16-bit converters sampling from 20 MSPS to 125 MSPS.
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Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY GENERAL DESCRIPTION SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS OUTLINE DIMENSIONS ORDERING GUIDE