AD9432 Datasheet, PDF (1/20 Pages) Analog Devices – 12-Bit, 80 MSPS/105 MSPS A/D Converter

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FEATURES
On-Chip Reference and Track/Hold
On-Chip Input Buffer
850 mW Typical Power Dissipation at 105 MSPS
500 MHz Analog Bandwidth
SNR = 67 dB @ 49 MHz AIN at 105 MSPS
SFDR = 80 dB @ 49 MHz AIN at 105 MSPS
2.0 V p-p Differential Analog Input Range
Single 5.0 V Supply Operation
3.3 V CMOS/TTL Outputs
Two’s Complement Output Format
APPLICATIONS
Communications
Basestations and ‘Zero-IF’ Subsystems
Wireless Local Loop (WLL)
Local Multipoint Distribution Service (LMDS)
HDTV Broadcast Cameras and Film Scanners
12-Bit, 80 MSPS/105 MSPS
A/D Converter
AD9432
FUNCTIONAL BLOCK DIAGRAM
V_CC
V_DD
AIN
AIN
ENCODE
ENCODE
BUF T/H
PIPELINE ¹²
12
ADC
OUTPUT
STAGING
TIMING
REF
AD9432
GND VREFOUT VREFIN
D11–D0
OR
GENERAL INTRODUCTION
The AD9432 is a 12-bit monolithic sampling analog-to-digital
converter with an on-chip track-and-hold circuit and is optimized
for high-speed conversion and ease of use. The product operates
at a 105 MSPS conversion rate with outstanding dynamic per-
formance over its full operating range.
The ADC requires only a single 5.0 V power supply and a
105 MHz encode clock for full-performance operation. No
external reference or driver components are required for many
applications. The digital outputs are TTL/CMOS compatible
and a separate output power supply pin supports interfacing
with 3.3 V logic. The encode input supports either differential
or single-ended and is TTL/CMOS-compatible.
Fabricated on an advanced BiCMOS process, the AD9432 is
available in a 52-lead plastic quad flatpack package (LQFP)
specified over the industrial temperature range (–40°C to +85°C).
REV. E
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© Analog Devices, Inc., 2002