®
ADS
807
E
ADS807
12-Bit, 53MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
TM
FEATURES
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SPURIOUS FREE DYNAMIC RANGE:
82dB at 10MHz f
IN
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HIGH SNR: 67.5dB (2Vp-p), 69dB (3Vp-p)
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LOW POWER: 335mW
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INTERNAL OR EXTERNAL REFERENCE
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LOW DNL: 0.5LSB
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FLEXIBLE INPUT RANGE: 2Vp-p to 3Vp-p
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28-LEAD SSOP PACKAGE
DESCRIPTION
The ADS807 is a high-speed, high dynamic range,
12-bit pipelined analog-to-digital converter. This con-
verter includes a high-bandwidth track-and-hold that
gives excellent spurious performance up to and beyond
the Nyquist rate. The differential nature of this track-
and-hold and A/D circuitry minimizes even-order har-
monics and gives excellent common-mode noise immu-
nity. The track-and-hold can also be operated single-
ended.
The ADS807 provides for setting the full-scale range
of the converter without any external reference cir-
cuitry. The internal reference can be disabled allowing
low drive, internal references to be used for improved
tracking in multichannel systems.
The ADS807 provides an overrange indicator flag to
indicate an input signal that exceeds the full-scale input
range of the converter. This flag can be used to reduce
the gain of front end gain control circuitry. There is
also an output enable pin to allow for multiplexing and
testability on a PC board.
The ADS807 employs digital error correction tech-
niques to provide excellent differential linearity for
demanding imaging applications.
CLK
ADS807
Timing
Circuitry
APPLICATIONS
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COMMUNICATIONS IF PROCESSING
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COMMUNICATIONS BASESTATIONS
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TEST EQUIPMENT
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MEDICAL IMAGING
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VIDEO DIGITIZING
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CCD DIGITIZING
+3V
+2.5V
+2V
+3V
+2.5V
+2V
CM
IN
(Opt.)
IN
T/H
Pipelined
A/D
Error
Correction
Logic
3-State
Outputs
D0
•
•
•
D11
Internal
Reference
Optional External
Reference
INT/EXT
FS
SEL
OE
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1998 Burr-Brown Corporation
PDS-1396C
Printed in U.S.A. January, 1999
BURR-BROWN [ BURR-BROWN CORPORATION ]
