Rainbow Electronics MAX5155 - Manual

_______________General Description
The MAX5154/MAX5155 low-power, serial, voltage-out-
put, dual 12-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5154) or
+3V (MAX5155) supply. These devices feature Rail-to-
Rail
® output swing and are available in a space-saving
16-pin QSOP package. To maximize the dynamic
range, the DAC output amplifiers are configured with an
internal gain of +2V/V.
The 3-wire serial interface is SPI™/QSPI™ and
Microwire™ compatible. Each DAC has a double-
buffered input organized as an input register followed
by a DAC register, which allows the input and DAC reg-
isters to be updated independently or simultaneously
with a 16-bit serial word. Additional features include
programmable shutdown (2µA), hardware-shutdown
lockout (PDL), a separate reference voltage input for
each DAC that accepts AC and DC signals, and an
active-low clear input (CL) that resets all registers and
DACs to zero. These devices provide a programmable
logic pin for added functionality, and a serial-data out-
put pin for daisy chaining.
________________________Applications
Industrial Process Control Remote Industrial Controls
Digital Offset and Gain Microprocessor-
Adjustment Controlled Systems
Motion Control Automatic Test
Equipment (ATE)
____________________________Features
♦ 12-Bit Dual DAC with Internal Gain of +2V/V
♦ Rail-to-Rail Output Swing
♦ 12µs Settling Time
♦ Single-Supply Operation: +5V (MAX5154)
+3V (MAX5155)
♦ Low Quiescent Current: 500µA (normal operation)
2µA (shutdown mode)
♦ SPI/QSPI and Microwire Compatible
♦ Available in Space-Saving 16-Pin QSOP Package
♦ Power-On Reset Clears Registers and DACs
to Zero
♦ Adjustable Output Offset
MAX5154/MAX5155
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
________________________________________________________________ Maxim Integrated Products 1
19-1316; Rev 1; 12/97
______________Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.
REFA V DD AGND DGND PDL CL DOUT
16-BIT
SHIFT
REGISTER
SR
CONTROL
INPUT
REG A
INPUT
REG B
SCLK UPO REFB DIN CS
DAC B
DAC A
DAC
REG A
LOGIC
OUTPUT
DECODE
CONTROL
DAC
REG B
MAX5154
MAX5155
OUTB
R
R
R
R
OSB
OUTA
OSA
_________________________________________________________Functional Diagram
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
INL
(LSB)
PIN-PACKAGE TEMP. RANGE PART
±1/2
±1
±1/2
16 QSOP
16 Plastic DIP
16 Plastic DIP 0°C to +70°C
0°C to +70°C
0°C to +70°C MAX5154ACEE
MAX5154BCPE
MAX5154 ACPE
±1 16 QSOP 0°C to +70°C MAX5154BCEE