ICM7337BQ ICMIC [IC MICROSYSTEMS], ICM7337BQ Datasheet

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ICM7337BQ

Manufacturer Part Number
ICM7337BQ
Description
Quad 12/10/8-Bit Voltage Output DACs with Serial Interface and Adjustable Output Gain
Manufacturer
ICMIC [IC MICROSYSTEMS]
Datasheet
Rev. A8
REFOUT
12/10/8-Bit Monotonic Quad DAC in 20 Lead
QSOP Package
Adjustable Output Gain
Wide Output Voltage Swing
150 µA per DAC at 5V Supply
100 µA per DAC at 3V Supply
On Board Reference
Serial Interface with three-wire SPI/QSPI and
Microwire Interface Compatible
Serial Data Out for Daisy-Chaining
8 µS Full scale Settling Time
Battery-Powered Applications
Industrial Process Control
Digital Gain and Offset Adjustment
REFERENCE
ICM7377B/7357B/7337B
INPUT AND DAC LATCH
INPUT AND DAC LATCH
INPUT AND DAC LATCH
INPUT AND DAC LATCH
ICmic reserves the right to change the specifications without prior notice.
SDI
INPUT CONTROL LOGIC, REGISTERS AND LATCHES
REFCD
SCK
REFAB
CS
The ICM7377B, ICM7357B and ICM7337B are Quad 12-
Bit, 10-Bit and 8-Bit wide output voltage swing DACs
respectively, with guaranteed monotonic behavior. These
DACs are available in 20 Lead QSOP package. They
include adjustable output gain for ease of use and
flexibility. The reference output is available on a separate
pin and can be used to drive external loads. The operating
supply range is 2.7V to 5.5V.
The input interface is an easy to use three-wire SPI/QSPI
and Microwire compatible interface. The DAC has a
double buffered digital input. And there is a serial data
output port to allow daisy-chaining applications.
DAC A
DAC D
DAC B
DAC C
CLR
+
+
+
+
-
-
-
-
VOA
FBA
VOB
FBB
VOC
FBC
VOD
FBD
SDO
1

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ICM7337BQ Summary of contents

Page 1

Monotonic Quad DAC in 20 Lead QSOP Package Adjustable Output Gain Wide Output Voltage Swing 150 µA per DAC at 5V Supply 100 µA per DAC at 3V Supply On Board Reference Serial Interface with three-wire SPI/QSPI and Microwire ...

Page 2

VDD FBA VOA VOB FBB REFAB CLR CS SDI SCK Pin Name I/O 1 VDD I Supply Voltage 2 FBA I Inverting Input of The Output Amplifier DAC A. Output Amplifier Feedback Input. 3 VOA O DAC A Output Voltage ...

Page 3

Symbol Supply Voltage V DD Input Current I IN Digital Input Voltage (SCK, SDI CLR ) Reference Input Voltage REF Storage Temperature T STG Soldering Temperature T SOL Note: Stress greater than ...

Page 4

Symbol Parameter OUTPUT CHARACTERISTICS Output Voltage Range Short Circuit Current VO SC Amp Output Impedance R OUT Output Line Regulation LOGIC INPUTS Digital Input High V IH Digital Input Low V IL Digital Input Leakage REFERENCE Reference Output V REFOUT ...

Page 5

SCK t 2 SDI DAC INPUT WORD Figure 1. Serial Interface Timing Diagram Rev. A8 ICmic reserves the right to change the specifications without prior notice ...

Page 6

SCK SCK SDI CONTROL WORD SDO Figure 2. Serial Interface Operation Diagram Rev. A8 ICmic reserves the right to change the specifications without prior notice ...

Page 7

ICM7377B (12-Bit DAC) MSB D11 CONTROL WORD Figure 3. Contents of ICM7377B Input Shift Register ICM7357B (10-Bit DAC) MSB CONTROL WORD Figure 4. Contents of ICM7357B Input Shift Register ICM7337B (8-Bit ...

Page 8

The ICM7377B is a 12-bit voltage output quad DAC. The ICM7357B is the 10-bit version of this family and the ICM7337B is the 8-bit version. This family of DACs employs a resistor string architecture guaranteeing monotonic behavior. There is a ...

Page 9

DEADBAND NEGATIVE OFFSET Figure 6. Effect of Negative Offset V DD DEADBAND POSITIVE OFFSET Figure 7. Effect of Gain Error and Positive Offset Rev. A8 ICmic reserves the right to change the specifications without prior notice. OFFSET AND GAIN ERROR ...

Page 10

PACKAGE INFORMATION 20 QSOP Rev. A8 ICmic reserves the right to change the specifications without prior notice. 10 ...

Page 11

ICM73X7B P G Device 7 - ICM7377B 5 - ICM7357B 3 - ICM7337B Rev. A8 ICmic reserves the right to change the specifications without prior notice RoHS Compliant Lead-Free package. Blank = Standard package. Non lead-free. Package Q ...

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