SPT5420SIM View Datasheet(PDF) - Signal Processing Technologies
Part Name
Description
MFG CO.
'SPT5420SIM' PDF : 7 Pages View PDF
SPT5420
13-BIT OCTAL D/A CONVERTER
PRELIMINARY INFORMATION
FEATURES
• 13-bit resolution
• Pin compatible with AD7839
• Eight DACs in one package
• Buffered voltage outputs
• Wide output voltage swing VDD–2.5 V to VSS+2.5 V
• 20 µs settling time
• Double-buffered digital inputs
• Microprocessor and TTL/CMOS compatible
APPLICATIONS
• Automatic test equipment
• Instrumentation
• Process control
GENERAL DESCRIPTION
The SPT5420 contains eight 13-bit digital-to-analog con-
verters designed primarily for automatic test equipment ap-
plications. It uses novel circuit topology to convert the 13-bit
digital inputs into output voltages which are proportionate to
the applied reference voltages. Each DAC’s full-scale out-
put voltage and output voltage offset are adjustable with
analog inputs.
The SPT5420 operates over an industrial temperature
range of –40 °C to +85 °C and is available in a 10 x 10 mm,
44-lead metric quad flat pack (MQFP) plastic package.
BLOCK DIAGRAM
VREFT01 VREFB01
RGND23 RGND01
13
13
13
D0 - D12
WR
CS
A0 - A2
LDAC
13
13
13
Control 8
Logic
13
LEA0 - LEA7
LDAC
13
13
DQ
0A
LE
LEA0
DQ
1A
LE
LEA1
D 2A Q
LE
LEA2
D 3A Q
LE
LEA3
DQ
4A
LE
LEA4
D 5A Q
LE
LEA5
D 6A Q
LE
LEA6
D 7A Q
LE
LEA7
13
DQ
0B
LE
LDAC
13
DQ
1B
LE
LDAC
13
D 2B Q
LE
LDAC
13
D 3B Q
LE
LDAC
13
DQ
4B
LE
LDAC
13
D 5B Q
LE
LDAC
13
D 6B Q
LE
LDAC
13
D 7B Q
LE
LDAC
DAC0
DAC1
DAC2
DAC3
DAC4
DAC5
DAC6
DAC7
-
+
VOUT0
-
+
VOUT1
-
+
VOUT2
-
+
VOUT3
+
-
VOUT4
+
-
VOUT5
+
-
VOUT6
+
-
VOUT7
VREFT2345 VREFB2345 VREFT67 VREFB67
CLR
RGND45 RGND67
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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