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MP7612AS View Datasheet(PDF) - Exar Corporation

Part Name
Description
MFG CO.
'MP7612AS' PDF : 20 Pages View PDF
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MP7612
Octal 12-Bit DAC ArrayTM
D/A Converter with Output Amplifier
and Serial Data/Address
...the analog plus companyTM
µP Control Logic
FEATURES
• Eight Independent 12-Bit DACs with Output Amplifiers
• Low Power 320 mW (typ.)
• Serial Digital Data and Address Port (3-Wire
Standard)
• 12-Bit Resolution, 11 Bit Accuracy
• Extremely Well Matched DACs
• Extremely Low Analog Ground Current (<60µA/Channel)
• +10 V Output Swing with +11.4 V Supplies
• Zero Volt Output Preset (Data = 10 .. 00)
• Rugged Construction – Latch-Up Free
• Parallel Version: MP7613
APPLICATIONS
• Data Acquisition Systems
• ATE
• Process Control
• Self-Diagnostic Systems
• Logic Analyzers
• Digital Storage Scopes
• PC Based Controller/DAS
April 1996-4
GENERAL DESCRIPTION
The MP7612 provides eight independent 12-bit resolution
Digital-to-Analog Converters with voltage output amplifiers and
a 3-wire standard serial digital address and data port.
Typical DAC matching for B grade versions is 0.7 LSB across
all codes. Accuracy of +0.75 LSB for DNL and +1 LSB for INL is
also achieved for B grades. The output amplifier is capable of
sinking and sourcing 5mA, and the output voltage settles to
12-bits in less than 30µs (typ.).
The MP7612 is equipped with a serial data (3-wire standard)
µ-processor logic interface to reduce pin count, package size,
and board space.
Built using an advanced linear BiCMOS, these devices offer
rugged solutions that are latch-up free, and take advantage of
EXAR’s patented thin-film resistor process which exhibits excel-
lent long term stability and reliability.
SIMPLIFIED BLOCK DIAGRAM
VRP
RST
–
+
VRN
XE0 - XE7
VRP
D Q 12
DAC0
+
LAT0
–
XR XE
VRN
XE0
VO0
SDI
LD
CLK
LAT
D EN Q
EN
DLAT Q
LD
Not Used
8
12
8
4 to 16 Decoder
4
D0 to D11 A0 to A3
16-Bit Shift Register
D Q 12
LAT7
XR XE
XE7
VRP
VRP
DAC7
+
–
VRN
Tri-State Buffer
LD
VO7
SDO
VEE VEE VCC VCC AGND AGND VREF DGND DVDD
Rev. 3.00
E1996
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7010
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