14-Bit, 170 MSPS/250 MSPS, JESD204B,
Dual Analog-to-Digital Converter
Data Sheet
AD9250
FEATURES
FUNCTIONAL BLOCK DIAGRAM
AVDD DRVDD DVDD
AGND DGND DRGND
JESD204B Subclass 0 or Subclass 1 coded serial digital outputs
Signal-to-noise ratio (SNR) = 70.6 dBFS at 185 MHz AIN and
250 MSPS
Spurious-free dynamic range (SFDR) = 88 dBc at 185 MHz
AIN and 250 MSPS
AD9250
VIN+A
VIN–A
PIPELINE
JESD-204B
INTERFACE
SERDOUT0±
SERDOUT1±
14-BIT ADC
CML, TX
OUTPUTS
VCM
HIGH
SPEED
SERIALIZERS
Total power consumption: 711 mW at 250 MSPS
1.8 V supply voltages
VIN+B
PIPELINE
14-BIT ADC
VIN–B
Integer 1-to-8 input clock divider
Sample rates of up to 250 MSPS
CMOS
DIGITAL
INPUT/
CONTROL
REGISTERS
PDWN
OUTPUT
IF sampling frequencies of up to 400 MHz
Internal analog-to-digital converter (ADC) voltage reference
Flexible analog input range
1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal)
ADC clock duty cycle stabilizer (DCS)
95 dB channel isolation/crosstalk
SYSREF±
SYNCINB±
CLK±
CLOCK
CMOS
GENERATION
FDA
FDB
DIGITAL
INPUT/
FAST
DETECT
RFCLK
CMOS
DIGITAL
OUTPUT
INPUT/OUTPUT
SDIO SCLK CS
RST
Figure 1.
Serial port control
Energy saving power-down modes
User-configurable, built-in self-test (BIST) capability
PRODUCT HIGHLIGHTS
APPLICATIONS
1. Integrated dual, 14-bit, 170 MSPS/250 MSPS ADC.
2. The configurable JESD204B output block supports up to
5 Gbps per lane.
3. An on-chip, phase-locked loop (PLL) allows users to provide a
single ADC sampling clock; the PLL multiplies the ADC
sampling clock to produce the corresponding JESD204B
data rate clock.
4. Support for an optional RF clock input to ease system board
design.
Diversity radio systems
Multimode digital receivers (3G)
TD-SCDMA, WiMAX, WCDMA, CDMA2000, GSM, EDGE, LTE
DOCSIS 3.0 CMTS upstream receive paths
HFC digital reverse path receivers
I/Q demodulation systems
Smart antenna systems
Electronic test and measurement equipment
Radar receivers
5. Proprietary differential input maintains excellent SNR
performance for input frequencies of up to 400 MHz.
6. Operation from a single 1.8 V power supply.
7. Standard serial port interface (SPI) that supports various
product features and functions such as controlling the clock
DCS, power-down, test modes, voltage reference mode, over
range fast detection, and serial output configuration.
COMSEC radio architectures
IED detection/jamming systems
General-purpose software radios
Broadband data applications
Rev. 0
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