10-/12-Bit,
Low Power, Broadband MxFE
AD9961/AD9963
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Dual 10-bit/12-bit, 100 MSPS ADC
SNR = 67 dB, fIN = 30.1 MHz
Dual 10-bit/12-bit, 170 MSPS DAC
ACLR = 74 dBc
5 channels of analog auxiliary input/output
Low power, <425 mW at maximum sample rates
Supports full and half-duplex data interfaces
Small 72-lead LFCSP lead-free package
TEMPERATURE
AD9961/AD9963
SENSOR
AUX
ADC
AUXIN1
DLLFILT
DLL AND
CLOCK
AUX
DAC
MUX
AUXIO2
AUXIO3
DISTRIBUTION
CLKP
CLKN
AUX
DAC
INTERNAL
TXCLK
TXIP
TXIN
12-BIT
DAC
APPLICATIONS
TXIQ/TXnRX
LPF
1/2/4/8
Wireless infrastructure
TXQP
TXQN
TXD[11:0]
12-BIT
DAC
Picocell, femtocell basestations
Medical instrumentation
Ultrasound AFE
Portable instrumentation
Signal generators, signal analyzers
DATA
ASSEMBLER
LPF
1/2/4/8
TRXCLK
TRXIQ
RXIP
RXIN
12-BIT
ADC
LPF
1/2
RXQP
RXQN
12-BIT
ADC
TRXD[11:0]
LPF
1/2
GENERAL DESCRIPTION
AUX
DAC
The AD9961/AD9963 are pin-compatible, 10-/12-bit, low
power MxFE® converters that provide two ADC channels with
sample rates of 100 MSPS and two DAC channels with sample
rates to 170 MSPS. These converters are optimized for transmit
and receive signal paths of communication systems requiring low
power and low cost. The digital interfaces provide flexible
clocking options. The transmit is configurable for 1×, 2×, 4×,
and 8× interpolation. The receive path has a bypassable 2×
decimating low-pass filter.
DAC12A
DAC12B
RESET
SDIO
SCLK
CS
SERIAL
PORT
AUX
DAC
LOGIC
REFERENCES
AND BIAS
LDO
VREGs
Figure 1.
PRODUCT HIGHLIGHTS
The AD9961 and AD9963 have five auxiliary analog channels.
Three are inputs to a 12-bit ADC. Two of these inputs can be
configured as outputs by enabling 10-bit DACs. The other
two channels are dedicated outputs from two independent
12-bit DACs.
1. High Performance with Low Power Consumption.
The DACs operate on a single 1.8 V to 3.3 V supply.
Transmit path power consumption is <100 mW at 170
MSPS. Receive path power consumption is <350 mW at
100 MSPS from 1.8 V supply. Sleep and power-down
modes are provided for low power idle periods.
The high level of integrated functionality, small size, and low
power dissipation of the AD9961/AD9963 make them well-
suited for portable and low power applications.
2. High Integration.
The dual transmit and dual receive data converters, five
channels of auxiliary data conversion and clock generation
offer complete solutions for many modem designs.
3. Flexible Digital Interface.
The interface mates seamlessly to most digital baseband
processors.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2010 Analog Devices, Inc. All rights reserved.
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