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.
___________________________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
MAX531/MAX538/MAX539
_______________________Applications
Battery-Powered Test Instruments
Digital Offset and Gain Adjustment
Battery-Operated/Remote Industrial Controls
Machine and Motion Control Devices
Cellular Telephones
______________Ordering Information
PART
MAX531ACPD
MAX531BCPD
MAX531ACSD
MAX531BCSD
MAX531BC/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
14 Plastic DIP
14 Plastic DIP
14 SO
14 SO
Dice*
ERROR
(LSB)
±1/2
±1
±1/2
±1
±1
________________Functional Diagram
(MAX531 ONLY)
REFIN
REFOUT
(MAX531 ONLY)
BIPOFF
Ordering Information continued at end of data sheet.
*Dice are specified at T
A
= +25°C only.
_________________Pin Configurations
RFB
(MAX531
ONLY)
VOUT
2.048V
REFERENCE
(MAX531 ONLY)
MAX531
MAX538
MAX539
DAC
TOP VIEW
AGND
POWER-UP
RESET
V
DD
DAC REGISTER
(12 BITS)
CONTROL
LOGIC
SHIFT REGISTER
(12 BITS) (MSB)
(LSB)
4
BITS
DGND
(MAX531
ONLY)
V
SS
(MAX531
ONLY)
DOUT
DIN
SCLK
1
2
8
7
V
DD
VOUT
REFIN
AGND
CLR
(MAX531
ONLY)
CS
SCLK
DIN
CS 3
DOUT 4
MAX538
MAX539
6
5
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 1-800-998-8800
+5V, Low-Power, Voltage-Output
Serial 12-Bit DACs
MAX531/MAX538/MAX539
ABSOLUTE MAXIMUM RATINGS
V
DD
to DGND and V
DD
to AGND ................................-0.3V, +6V
V
SS
to DGND and V
SS
to AGND .................................-6V, +0.3V
V
DD
to V
SS
.................................................................-0.3V, +12V
AGND to DGND........................................................-0.3V, +0.3V
Digital Input Voltage to DGND ......................-0.3V, (V
DD
+ 0.3V)
REFIN ..................................................(V
SS
- 0.3V), (V
DD
+ 0.3V)
REFOUT to AGND .........................................-0.3V, (V
DD
+ 0.3V)
RFB .....................................................(V
SS
- 0.3V), (V
DD
+ 0.3V)
BIPOFF ................................................(V
SS
- 0.3V), (V
DD
+ 0.3V)
V
OUT
(Note 1) ................................................................V
SS
, V
DD
Continuous Current, Any Pin................................-20mA, +20mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)....727mW
8-Pin SO (derate 5.88mW/°C above +70°C) ................471mW
14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)...800mW
14-Pin SO (derate 8.33mW/°C above +70°C) ..............667mW
Operating Temperature Ranges
MAX53_ _C_ _ .....................................................0°C to +70°C
MAX53_ _E_ _ ..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
The output may be shorted to V
DD
, V
SS,
or AGND if the package power dissipation limit is not exceeded.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V
DD
= +5V ±10%, V
SS
= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), C
REFOUT
= 33µF
(MAX531), R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
STATIC PERFORMANCE
Resolution
Relative Accuracy (Note 2)
Differential Nonlinearity
Unipolar Offset Error
Unipolar Offset Tempco
Gain Error (Note 2)
Gain-Error Tempco
Power-Supply Rejection Ratio
(Note 3)
VOLTAGE OUTPUT (VOUT)
Output Voltage Range
Output Load Regulation
Short-Circuit Current
REFERENCE INPUT (REFIN)
Voltage Range
Input Resistance
Input Capacitance
AC Feedthrough
Code dependent, minimum at code 555 hex
Code dependent (Note 4)
REFIN = 1kHz, 2Vp-p
0
40
10
-80
50
V
DD
- 2
V
kΩ
pF
dB
I
SC
MAX531 (G = +1), MAX538
MAX531 (G = +2), MAX539
VOUT = 2V, R
L
= 2kΩ
12
0
0
V
DD
- 2
V
DD
- 0.4
1
V
LSB
mA
PSRR
4.5V
≤
V
DD
≤
5.5V
N
INL
DNL
V
OS
TCV
OS
GE
MAX53_ _C/E
1
0.4
1
MAX53_AC/E
MAX53_BC/E
Guaranteed monotonic
MAX53_ _C/E
0
3
±1
12
±0.5
±1
±1
8
Bits
LSB
LSB
LSB
ppm/°C
LSB
ppm/°C
LSB/V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V
DD
= +5V ±10%, V
SS
= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), C
REFOUT
= 33µF
(MAX531), R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
T
A
= +25°C
Reference Output Voltage
V
DD
= 5.0V
MAX531BC
MAX531BE
Temperature Coefficient
Resistance
Power-Supply Rejection Ratio
Noise Voltage
Minimum Required External
Capacitor
Input High
Input Low
Input Current
Input Capacitance
DIGITAL OUTPUT (DOUT)
Output High
Output Low
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate
Voltage-Output Settling Time
Digital Feedthrough
Signal-to-Noise plus Distortion
POWER SUPPLY
Positive Supply Voltage
Power-Supply Current
SWITCHING CHARACTERISTICS
CS
Setup Time
SCLK Fall to
CS
Fall Hold Time
SCLK Fall to
CS
Rise Hold Time
SCLK High Width
SCLK Low Width
DIN Setup Time
DIN Hold Time
DOUT Valid Propagation Delay
CS
High Pulse Width
CLR
Pulse Width
CS
Rise to SCLK Rise Setup Time
t
CSS
t
CSH0
t
CSH1
t
CH
t
CL
t
DS
t
DH
t
DO
t
CSW
t
CLR
t
CS1
C
L
= 50pF
20
25
50
20
15
0
35
35
45
0
80
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3
V
DD
I
DD
All inputs = 0V or V
DD
, MAX531
output = no load
MAX538, MAX539
4.5
260
140
5.5
400
300
V
µA
SR
T
A
= +25°C
To ±1/2LSB, VOUT = 2V
CS
= V
DD
, DIN = 100kHz
REFIN = 1kHz, 2Vp-p (G = +1 or +2),
code = FFF hex
0.15
0.25
25
5
68
V/µs
µs
nV-s
dB
V
OH
V
OL
I
SOURCE
= 2mA
I
SINK
= 2mA
V
DD
- 1
0.4
V
V
TC
REFOUT
R
REFOUT
PSRR
e
n
C
MIN
MAX531AC/AE/AM/BM
MAX531BC/BE
(Note 5)
4.5V
≤
V
DD
≤
5.5V
0.1Hz to 10kHz
3.3
400
MIN
2.024
2.017
2.013
30
30
0.5
2
300
TYP
2.048
MAX
2.072
2.079
2.083
50
ppm/°C
Ω
µV/V
µVp-p
µF
V
UNITS
MAX531/MAX538/MAX539
REFERENCE OUTPUT (REFOUT—MAX531 only)
DIGITAL INPUTS (DIN, SCLK,
CS, CLR)
V
IH
V
IL
I
IN
C
IN
V
IN
= 0V or V
DD
8
2.4
0.8
±1
V
V
µA
pF
SINAD
_______________________________________________________________________________________
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
MAX531/MAX538/MAX539
ELECTRICAL CHARACTERISTICS—Dual Supplies (MAX531 Only)
(V
DD
= +5V ±10%, V
SS
= -5V ±10%, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, C
REFOUT
= 33µF,
R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Resolution
Relative Accuracy
Differential Nonlinearity
Bipolar Offset Error
Bipolar Offset Tempco
Gain Error (Unipolar or Bipolar)
Gain-Error Tempco
Power-Supply Rejection Ratio
(Note 3)
REFERENCE INPUT (REFIN)
Voltage Range
Input Resistance
Input Capacitance
AC Feedthrough
Code dependent, minimum at code 555 hex
Code dependent (Note 4)
REFIN = 1kHz, 2.0Vp-p
T
A
= +25°C
Reference Output Voltage
V
DD
= 5.0V
MAX531AC/AE/AM/BM
MAX531BC/BE
(Note 5)
4.5V
≤
V
DD
≤
5.5V
0.1Hz to 10kHz
3.3
400
MAX531BC
MAX531BE
Temperature Coefficient
Resistance
Power-Supply Rejection Ratio
Noise Voltage
Minimum Required External
Capacitor
DIGITAL INPUTS (DIN, SCLK,
CS)
Input High
Input Low
Input Current
Input Capacitance
DIGITAL OUTPUT (DOUT)
Output High
Output Low
V
OH
V
OL
I
SOURCE
= 2mA
I
SINK
= 2mA
V
DD
- 1
0.4
V
V
V
IH
V
IL
I
IN
C
IN
V
IN
= 0V or V
DD
8
2.4
0.8
±1
V
V
µA
pF
TC
REFOUT
R
REFOUT
PSRR
e
n
C
MIN
2.024
2.017
2.013
30
30
0.5
2
300
V
SS
+ 2
40
10
-80
2.048
2.072
2.079
2.083
50
ppm/°C
Ω
µV/V
µVp-p
µF
V
50
V
DD
- 2
V
kΩ
pF
dB
PSRR
4.5V
≤
V
DD
≤
5.5V, -5.5V
≤
V
SS
≤
-4.5V
SYMBOL
N
INL
DNL
V
OS
TCV
OS
GEU
Tested at V
DD
= 5V,
V
SS
= -5V
Guaranteed monotonic
BIPOFF = REFIN, MAX531_C/E
BIPOFF = REFIN
MAX531_C/E
1
0.4
1
3
±1
MAX531AC/E
MAX531BC/E
CONDITIONS
MIN
12
±0.5
±1
±1
±8
TYP
MAX
UNITS
Bits
LSB
LSB
LSB
ppm/°C
LSB
ppm/°C
LSB/V
REFERENCE OUTPUT (REFOUT—MAX531 only)
4
_______________________________________________________________________________________
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Dual Supplies (MAX531 Only) (continued)
(V
DD
= +5V ±10%, V
SS
= -5V ±10%, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, C
REFOUT
= 33µF,
R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
VOLTAGE OUTPUT (VOUT)
Output Voltage Range
Output Load Regulation
Short-Circuit Current
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate
Voltage-Output Settling Time
Digital Feedthrough
Signal-to-Noise plus Distortion
POWER SUPPLY
Positive Supply Voltage
Negative Supply Voltage
Positive Supply Current
Negative Supply Current
SWITCHING CHARACTERISTICS
CS
Setup Time
SCLK Fall to
CS
Fall Hold Time
SCLK Fall to
CS
Rise Hold Time
SCLK High Width
SCLK Low Width
DIN Setup Time
DIN Hold Time
DOUT Valid Propagation Delay
CS
High Pulse Width
CLR
Pulse Width
CS
Rise to SCLK Rise Setup Time
Note 2:
Note 3:
Note 4:
Note 5:
t
CSS
t
CSH0
t
CSH1
t
CH
t
CL
t
DS
t
DH
t
DO
t
CSW
t
CLR
t
CS1
C
L
= 50pF
20
25
50
20
15
0
35
35
45
0
80
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
DD
V
SS
I
DD
I
SS
All inputs = 0V or V
DD
, no load
All inputs = 0V or V
DD
, no load
4.5
-5.5
260
-120
5.5
0
400
-200
V
V
µA
µA
SINAD
SR
To ±1/2LSB, VOUT = 2V
Step 000 hex to FFF hex
REFIN = 1kHz, 2Vp-p, (G = +1)
REFIN = 1kHz, 2Vp-p, (G = +2)
0.15
0.25
25
5
68
68
V/µs
µs
nV-s
dB
I
SC
MAX531 (G = +1)
MAX531 (G = +2)
VOUT = 2V, R
L
= 2kΩ
12
V
SS
+ 2
V
SS
+ 0.4
V
DD
- 2
V
DD
- 0.4
1
V
LSB
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX531/MAX538/MAX539
In single-supply operation, INL and GE calculated from code 11 to code 4095. Tested at V
DD
= +5V.
This specification applies to both gain-error power-supply rejection ratio and offset-error power-supply rejection ratio.
Guaranteed by design.
Tested at I
OUT
= 100µA. The reference can typically source up to 5mA (see
Typical Operating Characteristics).
_______________________________________________________________________________________
5
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