AD9961_12 Datasheet, PDF (1/61 Pages) Analog Devices – 10-/12-Bit, Low Power, Broadband MxFE

Data Sheet
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
APPLICATIONS
Wireless infrastructure
Picocell, femtocell basestations
Medical instrumentation
Ultrasound AFE
Portable instrumentation
Signal generators, signal analyzers
GENERAL DESCRIPTION
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.
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.
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.
10-/12-Bit,
Low Power, Broadband MxFE
AD9961/AD9963
FUNCTIONAL BLOCK DIAGRAM
AD9961/AD9963
TEMPERATURE
SENSOR
DLLFILT
CLKP
CLKN
DLL AND
CLOCK
DISTRIBUTION
AUX
ADC
AUX
DAC
AUX
DAC
MUX
AUXIN1
AUXIO2
AUXIO3
TXCLK
TXIQ/TXnRX
TXD[11:0]
TRXCLK
TRXIQ
TRXD[11:0]
RESET
SDIO
SCLK
CS
INTERNAL
DATA
ASSEMBLER
LPF
1/2/4/8
LPF
1/2/4/8
LPF
1/2
LPF
1/2
SERIAL
PORT
LOGIC
REFERENCES
AND BIAS
12-BIT
DAC
12-BIT
DAC
12-BIT
ADC
12-BIT
ADC
AUX
DAC
AUX
DAC
LDO
VREGs
TXIP
TXIN
TXQP
TXQN
RXIP
RXIN
RXQP
RXQN
DAC12A
DAC12B
Figure 1.
PRODUCT HIGHLIGHTS
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.
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. A
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