SPT7710(2001) View Datasheet(PDF) - Signal Processing Technologies
Part Name
Description
Manufacturer
SPT7710 Datasheet PDF : 12 Pages
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SPT7710
8-BIT, 150 MSPS, FLASH A/D CONVERTER
FEATURES
• Metastable errors reduced to 1 LSB
• Low input capacitance: 10 pF
• Wide input bandwidth: 210 MHz
• 150 MSPS conversion rate
• Typical power dissipation: 2.2 watts
TECHNICAL DATA
AUGUST 17, 2001
APPLICATIONS
• Digital oscilloscopes
• Transient capture
• Radar, EW, ECM
• Direct RF down-conversion
• Medical electronics: ultrasound, CAT instrumentation
GENERAL DESCRIPTION
The SPT7710 is a monolithic flash A/D converter capable
of digitizing a two volt analog input signal into 8-bit digital
words at a 150 MSPS (typ) update rate.
For most applications, no external sample-and-hold is re-
quired for accurate conversion due to the device’s narrow
aperture time, wide bandwidth, and low input capacitance.
A single standard –5.2 volt power supply is required for
operation of the SPT7710, with nominal power dissipation
of 2.2 W. A proprietary decoding scheme reduces meta-
stable errors to the 1 LSB level.
The SPT7710 is available in 42-lead ceramic sidebrazed
DIP, surface-mount 44-lead cerquad and 46-lead PGA
packages; the cerquad and PGA packages allow access
to additional reference ladder taps, an overrange bit, and a
data ready output. The SPT7710 is available in the indus-
trial temperature range.
BLOCK DIAGRAM
Analog Input
(Force or Sense)
AGND DGND
VEE
VRTS
VRTF
Preamp
Comparator
256
Clock
Buffer
255
LINV MINV
MSB D7
DRINV
DREAD
VR3
152
Overrange
151
D7 MSB
VR2
VR1
VRBF
VRBS
Convert CLK
CLK
128
127
64
63
2
1
2
256 to
8-Bit
Encoder
D6
D5
D4
D3
D2
D1
LSB D0
ECL
Latches
and
Buffers
D6
D5
These functions are
D4
available in the PGA and
cerquad packages only.
D3
D2
D1
D0 LSB
Analog Input
(Sense or Force)
VEE
AGND
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
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