Rainbow Electronics MAX539 User Manual
19-0172; Rev 6; 2/97
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
_______________General Description
The MAX531/MAX538/MAX539 are low-power, voltageoutput, 12-bit digital-to-analog converters (DACs) specified 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 packages. 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
___________________________Features
♦ Operate from Single +5V Supply
♦ Buffered Voltage Output
♦ Internal 2.048V Reference (MAX531)
♦ 140µA Supply Current (MAX538/MAX539)
♦ INL = ±1/2LSB (max)
♦ Guaranteed Monotonic over Temperature
♦ Flexible Output Ranges:
0V to VDD(MAX531/MAX539)
VSSto VDD(MAX531)
0V to 2.6V (MAX531/MAX538)
♦ 8-Pin SO/DIP (MAX538/MAX539)
♦ Power-On Reset
♦ Serial Data Output for Daisy-Chaining
______________Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX531ACPD
MAX531BCPD 0°C to +70°C 14 Plastic DIP
MAX531ACSD 0°C to +70°C 14 SO
MAX531BCSD 0°C to +70°C 14 SO
MAX531BC/D 0°C to +70°C Dice* ±1
Ordering Information continued at end of data sheet.
*Dice are specified at T
0°C to +70°C 14 Plastic DIP
= +25°C only.
A
ERROR
(LSB)
±1/2
±1
±1/2
±1
_________________Pin Configurations
MAX531/MAX538/MAX539
AGND
CLR
(MAX531
ONLY)
SCLK
DIN
CS
DAC REGISTER
SHIFT REGISTER
(LSB)
MAX531
MAX538
MAX539
DAC
(12 BITS)
(12 BITS)
(MSB)
2.048V
REFERENCE
(MAX531 ONLY)
POWER-UP
RESET
CONTROL
LOGIC
________________________________________________________________
BITS
RFB
(MAX531
ONLY)
VOUT
V
DD
DGND
(MAX531
ONLY)
V
SS
(MAX531
ONLY)
4
DOUT
TOP VIEW
DIN
1
SCLK
2
CS
DOUT
Pin Configurations continued at end of data sheet.
MAX538
3
MAX539
4
DIP/SO
Maxim Integrated Products
V
8
DD
VOUT
7
REFIN
6
5
AGND
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
ABSOLUTE MAXIMUM RATINGS
VDDto DGND and VDDto AGND................................-0.3V, +6V
to DGND and VSSto AGND .................................-6V, +0.3V
V
SS
to VSS.................................................................-0.3V, +12V
V
DD
AGND to DGND........................................................-0.3V, +0.3V
Digital Input Voltage to DGND ......................-0.3V, (V
REFIN..................................................(V
REFOUT to AGND.........................................-0.3V, (V
RFB .....................................................(V
BIPOFF................................................(V
(Note 1) ................................................................VSS, V
V
OUT
Continuous Current, Any Pin................................-20mA, +20mA
Note 1: The output may be shorted to VDD, V
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.
- 0.3V), (V
SS
- 0.3V), (V
SS
- 0.3V), (V
SS
SS
+ 0.3V)
DD
+ 0.3V)
DD
+ 0.3V)
DD
+ 0.3V)
DD
+ 0.3V)
DD
DD
or AGND if the package power dissipation limit is not exceeded.
,
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(VDD= +5V ±10%, VSS= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), C
(MAX531), R
= 10kΩ, CL= 100pF, TA= T
L
MIN
to T
, unless otherwise noted.)
MAX
Continuous Power Dissipation (T
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
= +70°C)
A
REFOUT
= 33µF
PARAMETER SYMBOL MIN TYP MAX UNITS
STATIC PERFORMANCE
Resolution N 12 Bits
MAX531/MAX538/MAX539
Relative Accuracy (Note 2) INL LSB
Differential Nonlinearity DNL ±1 LSB
Unipolar Offset Error V
Unipolar Offset Tempco TCV
Gain Error (Note 2) GE ±1 LSB
Gain-Error Tempco 1 ppm/°C
Power-Supply Rejection Ratio
(Note 3)
VOLTAGE OUTPUT (VOUT)
Output Voltage Range
Output Load Regulation 1 LSB
Short-Circuit Current I
REFERENCE INPUT (REFIN)
Voltage Range 0V
Input Resistance 40 kΩ
Input Capacitance 10 50 pF
AC Feedthrough -80 dB
PSRR 0.4 1 LSB/V
SC
MAX53_AC/E
MAX53_BC/E
Guaranteed monotonic
MAX53_ _C/E
OS
OS
MAX53_ _C/E
4.5V ≤ VDD≤ 5.5V
MAX531 (G = +1), MAX538
MAX531 (G = +2), MAX539
VOUT = 2V, RL= 2kΩ
Code dependent, minimum at code 555 hex
Code dependent (Note 4)
REFIN = 1kHz, 2Vp-p
CONDITIONS
±0.5
±1
08LSB
3 ppm/°C
0V
0V
12 mA
DD
DD
- 0.4
DD
- 2
- 2 V
V
2 _______________________________________________________________________________________
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(VDD= +5V ±10%, VSS= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), C
(MAX531), R
PARAMETER
= 10kΩ, CL= 100pF, TA= T
L
SYMBOL MIN TYP MAX
MIN
to T
, unless otherwise noted.)
MAX
CONDITIONS
REFERENCE OUTPUT (REFOUT—MAX531 only)
TA= +25°C
Reference Output Voltage V
VDD= 5.0V
MAX531BC
MAX531BE
Temperature Coefficient TC
Resistance R
Power-Supply Rejection Ratio
REFOUT
REFOUT
PSRR 300 µV/V
Noise Voltage e
Minimum Required External
Capacitor
C
n
MIN
MAX531AC/AE/AM/BM
MAX531BC/BE
(Note 5)
4.5V ≤ VDD≤ 5.5V
0.1Hz to 10kHz
2.024 2.048 2.072
2.017 2.079
2.013 2.083
30 50
30
0.5 2
400
3.3 µF
DIGITAL INPUTS (DIN, SCLK, CS, CLR)
Input High
Input Low
Input Current
Input Capacitance C
V
IH
V
IL
I
IN
IN
VIN= 0V or V
DD
2.4
8
DIGITAL OUTPUT (DOUT)
Output High
Output Low V
V
OH
OL
I
SOURCE
I
SINK
= 2mA
= 2mA
V
- 1
DD
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate SR 0.15 0.25 V/µs
Voltage-Output Settling Time 25 µs
Digital Feedthrough
Signal-to-Noise plus Distortion SINAD 68 dB
TA= +25°C
To ±1/2LSB, VOUT = 2V
CS = VDD, DIN = 100kHz
REFIN = 1kHz, 2Vp-p (G = +1 or +2),
code = FFF hex
5 nV-s
POWER SUPPLY
Positive Supply Voltage V
Power-Supply Current I
DD
DD
All inputs = 0V or VDD,
output = no load
MAX531
MAX538, MAX539
4.5 5.5 V
260 400
140 300
SWITCHING CHARACTERISTICS
CS Setup Time
SCLK Fall to CS Fall Hold Time
SCLK Fall to CS Rise Hold Time
SCLK High Width t
SCLK Low Width t
DIN Setup Time t
DIN Hold Time t
DOUT Valid Propagation Delay t
CS High Pulse Width
CLR Pulse Width
CS Rise to SCLK Rise Setup Time
t
CSS
t
CSH0
t
CSH1
CH
CL
DS
DH
DO
t
CSW
t
CLR
t
CS1
CL= 50pF 80 ns
20 ns
15 ns
0 ns
35 ns
35 ns
45 ns
0 ns
20 ns
25 ns
50 ns
= 33µF
REFOUT
UNITS
ppm/°C
µVp-p
0.8 V
±1
0.4 V
MAX531/MAX538/MAX539
Ω
V
µA
pF
V
µA
_______________________________________________________________________________________ 3
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Dual Supplies (MAX531 Only)
(VDD= +5V ±10%, VSS= -5V ±10%, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, C
= 10kΩ, CL= 100pF, TA= T
R
L
MIN
to T
, unless otherwise noted.)
MAX
REFOUT
= 33µF,
PARAMETER SYMBOL MIN TYP MAX UNITS
Resolution
Relative Accuracy INL
Differential Nonlinearity
Bipolar Offset Error V
Bipolar Offset Tempco TCV
Gain Error (Unipolar or Bipolar) GEU
Gain-Error Tempco
Power-Supply Rejection Ratio
(Note 3)
REFERENCE INPUT (REFIN)
Voltage Range
Input Resistance
Input Capacitance
AC Feedthrough -80 dB
REFERENCE OUTPUT (REFOUT—MAX531 only)
MAX531/MAX538/MAX539
Temperature Coefficient TC
Resistance R
Power-Supply Rejection Ratio PSRR 4.5V ≤ VDD≤ 5.5V 300 µV/V
Minimum Required External
Capacitor
DIGITAL INPUTS (DIN, SCLK, CS)
Input High V
Input Low V
Input Current I
Input Capacitance C
DIGITAL OUTPUT (DOUT)
Output High V
Output Low V
N 12
Tested at VDD= 5V,
VSS= -5V
DNL ±1 LSB
PSRR 0.4 1 LSB/V
REFOUT
REFOUT
e
C
MIN
Guaranteed monotonic
BIPOFF = REFIN, MAX531_C/E
OS
BIPOFF = REFIN
OS
MAX531_C/E
4.5V ≤ VDD≤ 5.5V, -5.5V ≤ VSS≤ -4.5V
Code dependent, minimum at code 555 hex
Code dependent (Note 4)
REFIN = 1kHz, 2.0Vp-p
VDD= 5.0V
MAX531AC/AE/AM/BM 30 50
MAX531BC/BE 30
(Note 5) 0.5 2 Ω
0.1Hz to 10kHz 400 µVp-pNoise Voltage
n
IH
IL
VIN= 0V or V
IN
IN
I
OH
OL
SOURCE
I
= 2mA 0.4 V
SINK
CONDITIONS
MAX531AC/E
MAX531BC/E
VSS+ 2 VDD- 2
40 kΩ
10 50 pF
TA= +25°C
MAX531BC
MAX531BE
DD
= 2mA VDD- 1 V
2.024 2.048 2.072
2.017 2.079
2.013 2.083
3.3 µF
2.4 V
±0.5
3 ppm/°C
1 ppm/°C
0.8 V
8 pF
Bits
±1
±8
±1
±1 µA
LSB
LSB
LSB
ppm/°C
V
VReference Output Voltage
4 _______________________________________________________________________________________
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Dual Supplies (MAX531 Only) (continued)
(VDD= +5V ±10%, VSS= -5V ±10%, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, C
= 10kΩ, CL= 100pF, TA= T
R
L
PARAMETER
VOLTAGE OUTPUT (VOUT)
Output Voltage Range
Output Load Regulation
Short-Circuit Current
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate SR
Voltage-Output Settling Time 25 µs
Digital Feedthrough
Signal-to-Noise plus Distortion
POWER SUPPLY
Positive Supply Voltage
Negative Supply Voltage
Positive Supply Current I
Negative Supply Current I
SWITCHING CHARACTERISTICS
CS Setup Time
SCLK Fall to CS Fall Hold Time
SCLK Fall to CS Rise Hold Time
SCLK High Width t
SCLK Low Width t
DIN Setup Time t
DIN Hold Time t
DOUT Valid Propagation Delay t
CS High Pulse Width
CLR Pulse Width
CS Rise to SCLK Rise Setup Time
Note 2: In single-supply operation, INL and GE calculated from code 11 to code 4095. Tested at VDD= +5V.
Note 3: This specification applies to both gain-error power-supply rejection ratio and offset-error power-supply rejection ratio.
Note 4: Guaranteed by design.
Note 5: Tested at I
= 100µA. The reference can typically source up to 5mA (see
OUT
to T
MIN
, unless otherwise noted.)
MAX
SYMBOL MIN TYP MAX UNITS
MAX531 (G = +1)
MAX531 (G = +2)
VOUT = 2V, RL= 2kΩ
I
SC
To ±1/2LSB, VOUT = 2V
Step 000 hex to FFF hex
SINAD
V
V
DD
SS
t
CSS
t
CSH0
t
CSH1
CH
CL
DS
DH
DO
t
CSW
t
CLR
t
CS1
REFIN = 1kHz, 2Vp-p, (G = +1)
REFIN = 1kHz, 2Vp-p, (G = +2)
DD
SS
CL= 50pF 80 ns
CONDITIONS
V
+ 2 V
SS
V
+ 0.4 V
SS
0.15 0.25
4.5 5.5
-5.5 0 V
20 ns
15 ns
0 ns
35 ns
35 ns
45 ns
0 ns
20 ns
25 ns
50 ns
Typical Operating Characteristics
REFOUT
12
5 nV-s
68
68
260 400 µAAll inputs = 0V or VDD, no load
-120 -200 µAAll inputs = 0V or VDD, no load
= 33µF,
- 2
DD
- 0.4
DD
1 LSB
).
MAX531/MAX538/MAX539
V
mA
V/µs
dB
V
_______________________________________________________________________________________
5
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