SPT7710 データシートの表示（PDF） - Signal Processing Technologies
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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
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 opera-
tion of the SPT7710, with nominal power dissipation of 2.2 W.
BLOCK DIAGRAM
VRTS
VRTF
Analog Input
(Force or Sense)
AGND DGND
VEE
Preamp
Comparator
256
Clock
Buffer
255
VR3
152
MSB D7
A proprietary decoding scheme reduces metastable errors to
the 1 LSB level.
The part is packaged in a 42L ceramic sidebrazed DIP which
is pin compatible with the CX20116 and CXA1396D. A sur-
face-mount 44L cerquad and a 46L PGA package are also
available which allow access to additional reference ladder
taps, an overrange bit, and a data ready output. The SPT7710
is available in industrial and military temperature ranges and in
/883 compliant versions.
LINV MINV
DRINV
DREAD
Overrange
151
D7 MSB
128
VR2
127
64
VR1
63
2
VRBF
VRBS
Convert CLK
CLK
1
2
Analog Input
(Sense or Force)
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
VEE
AGND
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370 Website: http://www.spt.com E-Mail: sales@spt.com
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