Document
19-1255; Rev 0; 8/97
Low-Power, Dual, 13-Bit Voltage-Output DACs with Serial Interface
_______________General Description
The MAX5150/MAX5151 low-power, serial, voltage-output, dual 13-bit digital-to-analog converters (DACs) consume only 500µA from a single +5V (MAX5150) or +3V (MAX5151) supply. These devices feature Rail-toRail® 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 +2. The 3-wire serial interface is SPI™/QSPI™ and Microwire™ compatible. Each DAC has a doublebuffered input organized as an input register followed by a DAC register, which allows the input and DAC registers to be updated independently or simultaneously with a 16-bit serial word. Additional features include programmable shutdown (2µA), hardware-shutdown lockout, a separate reference voltage input for each DAC that accepts AC and DC signals, and an activelow 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 output pin for daisy-chaining.
____________________________Features
o o o o o o o o o 13-Bit Dual DAC with Internal Gain of +2 Rail-to-Rail Output Swing 16µs Settling Time Single-Supply Operation: +5V (MAX5150) +3V (MAX5151) 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
MAX5150/MAX5151
______________Ordering Information
PART MAX5150ACPE MAX5150BCPE MAX5150ACEE MAX5150BCEE MAX5150BC/D TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C PIN-PACKAGE 16 Plastic DIP 16 Plastic DIP 16 QSOP 16 QSOP Dice* INL (LSB) ±1/2 ±1 ±1/2 ±1 ±1
________________________Applications
Industrial Process Control Digital Offset and Gain Adjustment Motion Control Remote Industrial Controls MicroprocessorControlled Systems Automatic Test Equipment (ATE)
Ordering Information continued at end of data sheet. *Dice are tested at TA = +25°C, DC parameters only. Pin Configuration appears at end of data sheet.
_________________________________________________________Functional Diagram
DOUT CL PDL DGND AGND VDD REFA
DECODE CONTROL
INPUT REG A
DAC REG A
DAC A R
OUTA
16-BIT SHIFT REGISTER INPUT REG B LOGIC OUTPUT SERIAL CONTROL DAC REG B
MAX5150 MAX5151
DAC B
R FBA OUTB R
R FBB
CS
DIN
SCLK
UPO
REFB
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.
1
________________________________________________________________ Maxim Integrated Products
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.
Low-Power, Dual, 13-Bit Voltage-Output DACs with Serial Interface MAX5150/MAX5151.