MP7613 查看數據表（PDF） - Exar Corporation
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MP7613 Datasheet PDF : 16 Pages
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MP7613
Octal 12-Bit DAC ArrayTM
D/A Converter with Output Amplifier
and Parallel Data/Address µP Control Logic
FEATURES
• Eight Independent Channel 12-Bit DACs with
Output Amplifiers
• Low Power 320 mW (typ.)
• Parallel Digital Data and Address Port
• Double Buffered Data Interface
• Readback of DAC Latches
• Zero Volt Output Preset (Data = 10 .. 00)
• 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
• Rugged Construction – Latch-Up Proof
• Serial Version: MP7612
APPLICATIONS
• Data Acquisition Systems
• ATE
• Process Control
• Self-Diagnostic Systems
• Logic Analyzers
• Digital Storage Scopes
• PC Based Controller/DAS
GENERAL DESCRIPTION
The MP7613 provides eight independent 12-bit resolution
Digital-to-Analog Converters with voltage output amplifiers and
a parallel digital address and data port.
Built on using an advanced linear BiCMOS, these devices of-
fer rugged solutions that are latch-up free, and take advantage
of EXAR’s patented thin-film resistor process which exhibits ex-
cellent long term stability and reliability.
A standard µ-processor and TTL/CMOS compatible 12-bit in-
put data port loads the data into the pre-selected DACS.
This device can easily be interfaced to a data bus, and digital
readback of each channel is available.
Typical DAC matching is 0.7 LSB across all codes. Accuracy
of +0.75 LSB for DNL and +1 LSB for INL is achieved for B grade
versions. The output amplifier is capable of sinking and sourc-
ing 5mA, and the output voltage settles to 12-bits in less than
30µs (typ.).
SIMPLIFIED BLOCK DIAGRAM
DB0 - DB11
12 Bus
12
I/O
3
A0 - A2
8
LD1
Control
XE0 - XE7
RD
Logic 8 RB0 - RB7
CS
R1
R2
LD2
RB0
DQ
LAT0A
XR XE
XE0
RB7
DQ
LAT7A
XR XE
XE7
VRP
12
DQ
DAC0
LAT0B
XR XE
VRN
VRP
DQ
12
DAC7
LAT7B
XR XE
VRN
VRP
VRP
–
+
VEE VEE VCC VCC AGND AGND VREF DGND DVDD
Rev. 2.00
1
+
–
VO0
+
–
VO7
VRN
VREFN
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