AD9775-EB Analog Devices, Inc., AD9775-EB Datasheet

AD9775-EB

Manufacturer Part Number

AD9775-EB

Description

14-bit, 160 Msps, 2?/4?/8? Interpolating Dual Txdac+ Digital-to-analog Converter

Manufacturer

Analog Devices, Inc.

Datasheet

1.AD9775-EB.pdf (56 pages)

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FEATURES

14-bit resolution, 160 MSPS/400 MSPS input/output

Selectable 2×/4×/8× interpolating filter

Programmable channel gain and offset adjustment

Direct IF transmission mode for 70 MHz + IFs

Enables image rejection architecture

Fully compatible SPI® port

Excellent ac performance

Internal PLL clock multiplier

Selectable internal clock divider

Versatile clock input

Differential/single-ended sine wave or TTL/CMOS/LVPECL

Rev. E

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 registered trademarks are the property of their respective owners.

/4, f

data rate

SFDR: −71 dBc @ 2 MHz to 35 MHz

W-CDMA ACPR: −71 dB @ IF = 19.2 MHz

compatible

NONINTERLEAVED

OR INTERLEAVED

SELECT

/8 digital quadrature modulation capability

WRITE

I AND Q

DATA

CONTROL REGISTERS

AD9775

SPI INTERFACE AND

CLOCK OUT

CONTROL

MUX

HALF-BAND FILTERS ALSO CAN BE

CONFIGURED FOR ZERO STUFFING ONLY

ASSEMBLER

DATA

LATCH

FILTER1*

HALF-

BAND

FILTER2*

HALF-

BAND

FUNCTIONAL BLOCK DIAGRAM

Dual TxDAC+

14-Bit, 160 MSPS, 2×/4×/8× Interpolating

FILTER3*

HALF-

BAND

BYPASS

FILTER

MUX

PLL CLOCK MULTIPLIER AND CLOCK DIVIDER

Figure 1.

PHASE DETECTOR

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

Versatile input data interface

Single 3.3 V supply operation

Power dissipation: 1.2 W @ 3.3 V typical

On-chip, 1.2 V reference

80-lead, thin quad flat package, exposed pad (TQFP_EP)

APPLICATIONS

Communications

(

DAC

PRESCALER

Twos complement/straight binary data coding

Dual-port or single-port interleaved input data

Analog quadrature modulation architecture

3G, multicarrier GSM, TDMA, CDMA systems

Broadband wireless, point-to-point microwave radios

Instrumentation/ATE

DAC

AND VCO

/2, 4, 8

)

COS

SIN

COS

Digital-to-Analog Converter

REJECTION/

DUAL DAC

BYPASS

IMAGE

MODE

MUX

GAIN

DAC

IDAC

GAIN/OFFSET

REGISTERS

I/Q DAC

DIFFERENTIAL

CLK

OFFSET

AD9775

www.analog.com

DAC

OUT

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