Document
ICmic
IC MICROSYSTEMS
FEATURES • 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
APPLICATIONS • Battery-Powered Applications • Industrial Process Control • Digital Gain and Offset Adjustment
OVERVIEW The ICM7362, ICM7342 and ICM7322 are Dual 12-Bit, 10Bit and 8-Bit wide output voltage swing DACs respectively,
ICM7362/7342/7322
DUAL 12/10/8-BIT VOLTAGE-OUTPUT DACS
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.
BLOCK DIAGRAM
REFOUT
Reference
Input and DAC Latch
REFB REFA
VDD
ICM 7362/7342/7322
12/10/8 -Bit DAC A
x2
VOUT A
Input and DAC Latch
12/10/8 -Bit DAC B
x2
VOUT B
SDI Input Control Logic, Registers and Latches SCK CS GND
Power-OnReset
Rev. A8
ICmic reserves the right to change the specifications without prior notice.
1
ICmic
IC MICROSYSTEMS PACKAGE
ICM7362/7342/7322
DUAL 12/10/8-BIT VOLTAGE-OUTPUT DACS
10-Pin MSOP
VDD REFA VOUT A REFB VOUT B
1 2 3 4 5
10 GND 9 SDI 8 SCK 7 CS 6 REFOUT
PIN DESCRIPTION
Pin No 1
Symbol VDD
2 REF A
3 VOUT A
4 REF B
5 VOUT B
6 REFOUT
Supply Voltage DAC A Reference Input DAC A Output DAC B Reference Input DAC B Output Reference Output (1.25V)
Description
7 CS 8 SCK
9 SDI
10 GND
Chip Select (TTL or CMOS) Serial Clock Input (TTL or CMOS)
Serial Data Input (TTL or CMOS)
Ground
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
VDD Supply Voltage
-0.3 to 7.0
V
IIN Input Current
+/- 25.0
mA
VIN_ Digital Input Voltage (SCK, SDI, CS)
-0.3 to 7.0
V
VIN_REF TSTG TSOL
Reference Input Voltage Storage Temperature Soldering Temperature
-0.3 to 7.0 -65 to +150 300
V oC oC
Note: Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
ORDERING INFORMATION
Part Temperature Range
ICM7362 ICM7342 ICM7322
-40 oC to 85 oC -40 oC to 85 oC -40 oC to 85 oC
Package
10-Pin MSOP 10-Pin MSOP 10-Pin MSOP
Rev. A8
ICmic reserves the right to change the specifications without prior notice.
2
ICmic
IC MICROSYSTEMS
ICM7362/7342/7322
DUAL 12/10/8-BIT VOLTAGE-OUTPUT DACS
DC ELECTRICAL CHARACTERISTICS
(VDD = 2.7V to 5.5V, VREF IN = 1.25V ; VOUT unloaded; a.