MAX531 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – +5V, Low-Power, Voltage-Output, Serial 12-Bit DACs

19-0172; Rev 6; 2/97
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
_______________General Description
The MAX531/MAX538/MAX539 are low-power, voltage-
output, 12-bit digital-to-analog converters (DACs) speci-
fied for single +5V power-supply operation. The MAX531
can also be operated with ±5V supplies. The
MAX538/MAX539 draw only 140µA, and the MAX531
(with internal reference) draws only 260µA. The
MAX538/MAX539 come in 8-pin DIP and SO packages,
while the MAX531 comes in 14-pin DIP and SO pack-
ages. All parts have been trimmed for offset voltage,
gain, and linearity, so no further adjustment is necessary.
The MAX538’s buffer is fixed at a gain of +1 and the
MAX539’s buffer at a gain of +2. The MAX531’s internal
op amp may be configured for a gain of +1 or +2, as
well as for unipolar or bipolar output voltages. The
MAX531 can also be used as a four-quadrant multiplier
without external resistors or op amps.
For parallel data inputs, see the MAX530 data sheet.
_______________________Applications
Battery-Powered Test Instruments
Digital Offset and Gain Adjustment
Battery-Operated/Remote Industrial Controls
Machine and Motion Control Devices
Cellular Telephones
________________Functional Diagram
(MAX531 ONLY)
REFOUT REFIN
(MAX531 ONLY)
BIPOFF
AGND
CLR
(MAX531
ONLY)
CS
SCLK
DIN
2.048V
REFERENCE
(MAX531 ONLY)
MAX531
MAX538
MAX539
DAC
POWER-UP
RESET
DAC REGISTER
(12 BITS)
CONTROL
LOGIC
SHIFT REGISTER
4
(LSB) ^{(12 BITS)} (MSB) ^BITS
RFB
(MAX531
ONLY)
VOUT
V_DD
DGND
(MAX531
ONLY)
V_SS
(MAX531
ONLY)
DOUT
___________________________Features
o Operate from Single +5V Supply
o Buffered Voltage Output
o Internal 2.048V Reference (MAX531)
o 140µA Supply Current (MAX538/MAX539)
o INL = ±1/2LSB (max)
o Guaranteed Monotonic over Temperature
o Flexible Output Ranges:
0V to V_DD (MAX531/MAX539)
V_SS to V_DD (MAX531)
0V to 2.6V (MAX531/MAX538)
o 8-Pin SO/DIP (MAX538/MAX539)
o Power-On Reset
o Serial Data Output for Daisy-Chaining
______________Ordering Information
PART
TEMP. RANGE
MAX531ACPD
MAX531BCPD
MAX531ACSD
MAX531BCSD
MAX531BC/D
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
ERROR
(LSB)
14 Plastic DIP ±1/2
14 Plastic DIP ±1
14 SO
±1/2
14 SO
±1
Dice*
±1
Ordering Information continued at end of data sheet.
*Dice are specified at T_A = +25°C only.
_________________Pin Configurations
TOP VIEW
DIN ₁
SCLK 2
CS 3
DOUT 4
MAX538
MAX539
8 VDD
7 VOUT
6 REFIN
5 AGND
DIP/SO
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone]