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PDF ICM7343 Data sheet ( Hoja de datos )

Número de pieza ICM7343
Descripción QUAD 12/10/8-BIT VOLTAGE-OUTPUT DACS
Fabricantes ICmic 
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No Preview Available ! ICM7343 Hoja de datos, Descripción, Manual

ICmic
IC MICROSYSTEMS
ICM7363/7343/7323
QUAD 12/10/8-BIT VOLTAGE-OUTPUT DACS
FEATURES
12/10/8-Bit Monotonic Quad DACs in 16 lead
QSOP Package
Wide Output Voltage Swing
150 µA per DAC at 5V Supply
100 µA per DAC at 3V Supply
On Board Reference
Three-wire SPI Interface
Serial Data Out for Daisy-Chaining
8µs Full-Scale Settling Time
APPLICATIONS
Battery-Powered Applications
Industrial Process Control
Digital Gain and Offset Adjustment
OVERVIEW
The ICM7363, ICM7343 and ICM7323 are Quad 12-Bit,
10-Bit and 8-Bit wide output voltage swing DACs
BLOCK DIAGRAM
respectively, with guaranteed monotonic behavior. They
include a 1.25V reference for ease of use and flexibility.
The reference output is available on a separate pin and
can be used to drive the reference input of each DAC.
Alternately, each DAC can be driven by an external
reference. There is a wide operating supply range of 2.7V
to 5.5V.
The input interface is an easy to use three-wire SPI/QSPI
compatible interface. Each DAC can be individually
controlled and has a double buffered digital input. There is
a serial data output to allow for daisy-chaining
applications.
REFD REFC REFB REFA
VDD
REFOUT
Reference
ICM 7363/7343/7323
Input and
DAC Latch
12/10/8 -Bit
DAC A
x2 VOUT A
Input and
DAC Latch
12/10/8 -Bit
DAC B
x2 VOUT B
Input and
DAC Latch
12/10/8 -Bit
DAC C
x2 VOUT C
Input and
DAC Latch
12/10/8 -Bit
DAC D
x2 VOUT D
SDI Input Control Logic, Registers and Latches
SDO
Power-On-
Reset
SCK CS
CLR GND
Rev. A8
ICmic reserves the right to change the specifications without prior notice.
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ICM7343 pdf
ICmic
IC MICROSYSTEMS
ICM7363/7343/7323
QUAD 12/10/8-BIT VOLTAGE-OUTPUT DACS
SCK
SDI
t1
t3
t2
C3 C2
Input Word for DAC N
CS
SDO
t8
LSB
t4
t5
t6
C3 C2
Input Word for DAC N
Figure 1: Serial Interface Timing Diagram
CONTENTS OF INPUT SHIFT REGISTER
ICM7363 (12-Bit DAC)
MSB
LSB
C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Figure 2: Contents of ICM7363 Input Shift Register
ICM7343 (10-Bit DAC)
MSB
LSB
C3 C2 C1 C0 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X
Figure 3: Contents of ICM7343 Input Shift Register
ICM7323 (8-Bit DAC)
MSB
LSB
C3 C2 C1 C0 D7 D6 D5 D4 D3 D2 D1 D0 X X X X
Figure 4: Contents of ICM7323 Input Shift Register
Rev. A8
ICmic reserves the right to change the specifications without prior notice.
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