S9408S Datasheet, PDF (1/10 Pages) Summit Microelectronics, Inc. – Serial Input, Quad 8-Bit Nonvolatile DACPOT

SUMMIT
MICROELECTRONICS, Inc.
Serial Input, Quad 8-Bit Nonvolatile DACPOT™
S9408
FEATURES
• Four 8-Bit DACS
– Differential Non-linearity - ±0.5LSB max
– Integral Non-Linearity - ±1LSB max
• Each DAC has Independent Reference Inputs
– Output Buffer Amplifiers Swing Rail-to-Rail
– Ground to VDD Reference Input Range
• Each DAC’s Digital Input Data Maintained in
Nonvolatile EEPROM
• Power-On Reset Reloads Registers with
Nonvolatile Data
• Simple Serial Interface for Reading and Writing
DAC values, SPI™ and QSPI™ compatible.
• Fully operational from 2.7V to 5.5V
• Low Power: <1mW @ 2.7V
OVERVIEW
The S9408 DACPOT™ is a serial input, voltage output,
quad 8-bit digital to analog converter. The S9408 oper-
ates from a single +2.7V to +5.5V supply. Internal preci-
sion buffers swing rail-to-rail and the reference input
range includes both ground and the positive supply.
The S9408 integrates four 8-bit DACs and their associ-
ated circuits which include an enhanced unity-gain opera-
tional amplifier output, an 8-bit data latch, an 8-bit non-
volatile register, and an industry-standard serial interface
for reading and writing data to the DACs’ data latches and
registers. The DACs are independently programmable
and each has its own electrically isolated Vreference
inputs.
FUNCTIONAL BLOCK DIAGRAM
VDD 3
Memory Control
8-Bit E2PROM
DAC SECTION 0
Serial
Data In
8-Bit Data Register
8-Bit DAC
AMP
2 VREFH0
18 VOUT0
RDY/BSY# 4
Programming
Memory
Controller
CS# 6
DI 7
CLK 5
00/REG# 9
GND 10
Control
Logic
Serial Data Out
DAC SECTION 1
DAC SECTION 2
11 VREFL0
1 VREFH1
17 VOUT1
12 VREFL1
20 VREFH2
16 VOUT2
13 VREFL2
DAC SECTION 3
19 VREFH3
15 VOUT3
14 VREFL3
8 DO
2015 T BD 2.0
© SUMMIT MICROELECTRONICS, Inc. 2000 • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Phone [phone] • Fax [phone] • www.summitmicro.com
Characteristics subject to change without notice
2015 2.2 8/2/00
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