Rainbow Electronics MAX5259 - Manual

General Description
The MAX5258/MAX5259 are +3V/+5V single-supply,
digital serial-input, voltage-output, 8-bit octal digital-to-
analog converters (DACs). Internal precision buffers
swing Rail-to-Rail
® , and the reference input range
extends from ground to the positive supply. The +5V
(MAX5258) and the +3V (MAX5259) feature a 10µA
(max) shutdown mode.
The serial interface is double-buffered. A 16-bit input
shift register is followed by eight 8-bit input registers
and eight 8-bit DAC registers. The 16-bit serial word
consists of two “don’t care” bits, three address bits,
three control bits, and eight data bits. The input and
DAC registers can both be updated independently or
simultaneously with a single software command. The
asynchronous control input (LDAC) provides simultane-
ous updating of all eight DAC registers.
The interface is compatible with SPI™, QSPI™ (CPOL =
CPHA = 0 or CPOL = CPHA = 1), and MICROWIRE™.
A buffered digital data output allows daisy-chaining of
serial devices.
The MAX5258/MAX5259 are available in a 16-pin QSOP
package.
________________________Applications
Digital Gain and Offset Adjustment
Programmable Attenuators
Programmable Current Sources
Portable Instruments
Features
♦ +2.7V to +5.5V Single-Supply Operation
♦ Low Supply Current: 1.3mA
♦ Low-Power Shutdown Mode
0.54mA (MAX5259)
0.80mA (MAX5258)
♦ ±1LSB DNL (max)
♦ ±1LSB INL (max)
♦ Ground to V
DD
Reference Input Range
♦ Output Buffer Amplifiers Swing Rail-to-Rail
♦ 10MHz Serial Interface, SPI, QSPI (CPOL = CPHA
= 0 or CPOL = CPHA = 1), and MICROWIRE-
Compatible
♦ Double-Buffered Registers for Synchronous
Updating
♦ Serial Data Output for Daisy-Chaining
♦ Ultra-Small 16-Pin QSOP Package
+3V/+5V, Low-Power, 8-Bit Octal DACs
with Rail-to-Rail Output Buffers
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OUTB OUTC
OUTD
DOUT
DIN
CS
SCLK
OUTH
OUTG
TOP VIEW
MAX5258
MAX5259
QSOP
OUTA
OUTE
OUTF
GND
V
DD
REF
LDAC
Pin Configuration
19-1844; Rev 1; 4/01
Ordering Information
PART TEMP. RANGE PIN- PACK AGE
SU PPL Y
VO LT A G E
( V)
MAX5258EEE -40 o C to +85 o C 16 QSOP +5.0
MAX5259EEE -40 o C to +85 o C 16 QSOP +3.0
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX5258/MAX5259
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.