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Digital sampling oscilloscopes (DSO)
RGB video processing
Digital communications
High-speed instrumentation
Projection display systems
GENERAL DESCRIPTION
The SPT7720 is an 8-bit, high-speed, analog-to-digital
converter implemented in a 0.5 碌m BiCMOS process. It
utilizes a folding and interpolating architecture that pro-
vides both high sample rates and low power. The device
comes complete with a high bandwidth track-and-hold
amplifier and internal voltage reference.
The SPT7720 digital inputs interface directly to TTL,
CMOS or positive ECL (PECL) logic. The digital outputs
are user selectable in either single-channel or dual-chan-
nel modes. It is a pin-compatible, direct replacement for
the AD9054. The SPT7720 is available in a 44-lead TQFP
surface mount package over the industrial temperature
range of 鈥?0 to +85 擄C.
BLOCK DIAGRAM
V
REF
IN
V
REF
OUT
AIN
AIN
+
聳
Reference
THA
Quantizer
8
Channel A
ENCODE
ENCODE
DA
7
聳 DA
0
Timing & Control
Binary
Encoder
Channel B
8
DB
7
聳 DB
0
DEMUX DS
DS
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: 719-528-2300
Fax: 719-528-2370
Web Site: http://www.spt.com
e-mail: sales@spt.com