ICM7322 ICMIC [IC MICROSYSTEMS], ICM7322 Datasheet

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ICM7322

Manufacturer Part Number
ICM7322
Description
DUAL 12/10/8-BIT VOLTAGE-OUTPUT DACS
Manufacturer
ICMIC [IC MICROSYSTEMS]
Datasheet
The ICM7362, ICM7342 and ICM7322 are Dual 12-Bit, 10-
Bit and 8-Bit wide output voltage swing DACs respectively,
Rev. A8
REFOUT
12/10/8-Bit Monotonic Dual DACs in 10 lead
MSOP Package
Wide Output Voltage Swing
100 µA per DAC
On Board Reference
Serial Interface with three-wire SPI/QSPI and
Microwire Interface Compatible
8µs Full-Scale Settling Time
Battery-Powered Applications
Industrial Process Control
Digital Gain and Offset Adjustment
SDI
DAC Latch
DAC Latch
Input and
Input and
SCK
Reference
ICmic reserves the right to change the specifications without prior notice
Input Control Logic, Registers and Latches
CS
REF
B
12/10/8 -Bit
12/10/8 -Bit
GND
REF
DAC B
DAC A
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. The
operating supply range is 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.
A
ICM 7362/7342/7322
Power-On-
Reset
x2
x2
V
DD
.
V
V
OUT A
OUT B
1

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ICM7322 Summary of contents

Page 1

... Full-Scale Settling Time Battery-Powered Applications • Industrial Process Control • • Digital Gain and Offset Adjustment The ICM7362, ICM7342 and ICM7322 are Dual 12-Bit, 10- Bit and 8-Bit wide output voltage swing DACs respectively, REFOUT Reference Input and DAC Latch Input and ...

Page 2

... Part Temperature Range o o ICM7362 - ICM7342 - ICM7322 - Rev. A8 ICmic reserves the right to change the specifications without prior notice 10-Pin MSOP REF ...

Page 3

... Settling Time Mid-scale Transition Glitch Energy Note 1: Linearity is defined from code 64 to 4095 (ICM7362) Linearity is defined from code 16 to 1023 (ICM7342) Linearity is defined from code 4 to 255 (ICM7322) Note 2: Guaranteed by design; not tested in production Note 3: See Applications Information Note 4: All digital inputs are either at GND or Vdd Rev ...

Page 4

Symbol Parameter t SCK Cycle Time 1 t Data Setup Time 2 t Data Hold Time 3 t SCK Falling edge Rising Edge t CS Falling Edge to ...

Page 5

... D7 D6 Figure 2: Contents of ICM7362 Input Shift Register Figure 3: Contents of ICM7342 Input Shift Register Figure 4: Contents of ICM7322 Input Shift Register DAC FUNCTION Data A Load Input Latch Data A Update DAC Data A Load Input Latch and Update DAC Data B Load Input Latch ...

Page 6

... The ICM7342 has the last two LSBs as don’t cares and the ICM7322 has the last 4 LSBs as don’t cares. Each DAC is double buffered with an input latch and a DAC latch. All the digital inputs are CMOS/TTL compatible. The current dissipation of the device however, will be higher when the inputs are driven at TTL levels ...

Page 7

As in any precision circuit, careful consideration has to be given to layout of the supply and ground. The return path from the GND to the supply ground should be short with low impedance. Using a ground plane would be ...

Page 8

Rev. A8 ICmic reserves the right to change the specifications without prior notice 8 . ...

Page 9

... ICM73X2 P G Device 6 - ICM7362 4 - ICM7342 2 - ICM7322 Rev. A8 ICmic reserves the right to change the specifications without prior notice G = RoHS Compliant Lead-Free package. Blank = Standard package. Non lead-free. Package M = 10-Lead MSOP . 9 ...

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