MAX5105-MAX5106 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – Nonvolatile, Quad, 8-Bit DACs

19-1925; Rev 1; 6/01
Nonvolatile, Quad, 8-Bit DACs
General Description
The MAX5105/MAX5106 nonvolatile, quad, 8-bit digital-
to-analog converters (DACs) operate from a single
+2.7V to +5.5V supply. An internal EEPROM stores the
DAC states even after power is removed. Data from
these nonvolatile registers automatically initialize the
DAC outputs and operating states during power-up.
Precision internal buffers swing Rail-to-Rail^®, and the
reference input range includes both ground and the
positive rail.
The MAX5105/MAX5106 feature a software-controlled
10µA shutdown mode and a mute state that drives the
DAC outputs to their respective REFL_ voltages. The
MAX5105 includes an asynchronous MUTE input, as
well as a RDY/BSY output that indicates the status of
the nonvolatile memory.
The MAX5105 is available in a 20-pin QSOP and 20-pin
wide SO packages, and the MAX5106 is available in a
16-pin QSOP package.
________________________Applications
Digital Gain and Offset Adjustments
Programmable Attenuators
Portable Instruments
Power-Amp Bias Control
Functional Diagram appears at end of data sheet.
Rail-to-Rail is a trademark of Nippon Motorola, Ltd.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
TOP VIEW
REFH1 1
REFH0 2
V_DD 3
RDY/BSY 4
CLK 5
CS 6
DIN 7
DOUT 8
MUTE 9
GND 10
MAX5105
20 REFH2
19 REFH3
18 OUT0
17 OUT1
16 OUT2
15 OUT3
14 REFL3
13 REFL2
12 REFL1
11 REFL0
Features
o On-Chip EEPROM Stores DAC States
o Power-On Reset Initialization of All Registers to
Prestored States
o +2.7V to +5.5V Single-Supply Operation
o Four 8-Bit DACs with Independent High and Low
Reference Inputs (MAX5105)
o Ground to V_DD Reference Input Range
o Rail-to-Rail Output Buffers
o Low 1mA Supply Current
o Low Power 10µA (max) Shutdown Mode
o Small 20- or 16-Pin QSOP Package
o SPI™/QSPI™/MICROWIRE™-Compatible Serial
Interface
o Asynchronous MUTE Input (MAX5105)
o RDY/BSY Pin to Indicate Memory Status
(MAX5105)
o Wide Operating Temperature Range
(-40°C to +85°C)
Ordering Information
PART
MAX5105EEP
MAX5105EWP
MAX5106EEE
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 QSOP
20 SO
16 QSOP
Pin Configurations
REFH1 1
REFH0 2
V_DD 3
CLK 4
CS 5
DIN 6
DOUT 7
GND 8
MAX5106
16 REFH2
15 REFH3
14 OUT0
13 OUT1
12 OUT2
11 OUT3
10 REFL1
9 REFL0
16 QSOP
20 QSOP/SOIC
________________________________________________________________ Maxim Integrated Products 1
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