SPT7760 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – 8-BIT, 1 GSPS FLASH A/D CONVERTER

SPT
SIGNAL PROCESSING TECHNOLOGIES
SPT7760
8-BIT, 1 GSPS FLASH A/D CONVERTER
FEATURES
• 1:2 Demuxed ECL Compatible Outputs
• Wide Input Bandwidth - 900 MHz
• Low Input Capacitance - 15 pF (MQUAD)
• Metastable Errors Reduced to 1 LSB
• Monolithic for Low Cost
• Gray Code Output
APPLICATIONS
• Digital Oscilloscopes
• Transient Capture
• Radar, EW, ECM
• Direct RF Down-Conversion
GENERAL DESCRIPTION
The SPT7760 is a full parallel (flash) analog-to-digital con-
verter capable of digitizing full scale (0 to -2 V) inputs into
eight-bit digital words at an update rate of 1 GSPS. The ECL-
compatible outputs are demultiplexed into two separate
output banks, each with differential data ready outputs to
ease the task of data capture. The SPT7760's wide input
bandwidth and low capacitance eliminate the need for exter-
nal track-and-hold amplifiers for most applications. A propri-
etary decoding scheme reduces metastable errors to the
1 LSB level. The SPT7760 operates from a single -5.2 V
supply, with a nominal power dissipation of 5.5 W.
The SPT7760 is available in an 80L surface-mount MQUAD
package over the industrial temperature range. Contact the
factory for availability of die and /883 versions.
BLOCK DIAGRAM
Analog
V_{RT Input}
Preamp
Comparator
256
CLK CLK
CLOCK
BUFFER
DEMUX
CLOCK
BUFFER
255
D8
(OVR)
D8B
152
D7B
D7
•
(MSB)
•
D5B
151
D6
•
•
D2B
128
D5
D1B
D0B
V_RM
127
D4
D8A
D7A
64
•
D3
•
•
D5A
63
D2
•
•
•
D2A
2
D1
D1A
D0A
1
DO
(LSB)
V_RB
DRB (DATA READY)
DRB (DATA READY)
D8B (OVR)
D7B (MSB)
D6B
D5B
D4B
D3B
D2B
D1B
D0B (LSB)
DRA (DATA READY)
DRA (DATA READY)
D8A (OVR)
D7A (MSB)
D6A
D5A
D4A
D3A
D2A
D1A
D0A (LSB)
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: [phone] FAX: [phone] Website: http://www.spt.com E-Mail: [e-mail]