19-2330; Rev 0; 1/02
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
General Description
The MAX5234/MAX5235 precision, dual-output, 12-bit
digital-to-analog converters (DACs) consume only 360µA
from a single 5V (MAX5235) or 325µA from a single 3V
(MAX5234) supply. These devices feature output buffers
that swing Rail-to-Rail
®
. The internal gain amplifiers maxi-
mize the dynamic range of the DAC output.
The MAX5234/MAX5235 feature a 13.5MHz 3-wire seri-
al interface compatible with SPI™, QSPI™, and
MICROWIRE™. Each DAC input is organized as an
input register followed by a DAC register. A 16-bit shift
register loads data into the input registers. Input regis-
ters update the DAC registers independently or simulta-
neously. In addition, programmable control bits allow
power-down with 1kΩ or 200kΩ internal loads.
The MAX5234/MAX5235 are fully specified over the
extended industrial temperature range (-40°C to +85°C)
and are available in space-saving 10-pin µMAX packages.
o
Guaranteed 1/2LSB INL (max)
o
Low Supply Current
325µA (Normal Operation)
0.4µA (Full Power-Down Mode)
o
Single-Supply Operation
3V (MAX5234)
5V (MAX5235)
o
Space-Saving 10-Pin µMAX Package
o
Output Buffers Swing Rail-to-Rail
o
Power-On Reset Clears Registers and DACs
to Zero
o
Programmable Shutdown Modes with 1kΩ or
200kΩ Internal Loads
o
Resets to Zero
o
13.5MHz SPI/QSPI/MICROWIRE-Compatible,
3-Wire Serial Interface
o
Buffered Output Drives 5kΩ || 100pF
Features
MAX5234/MAX5235
Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
µP-Controlled Systems
Ordering Information
PART
MAX5234AEUB
MAX5234BEUB
MAX5235AEUB
MAX5235BEUB
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
10 µMAX
10 µMAX
10 µMAX
10 µMAX
INL
(LSB)
±0.5
±1
±0.5
±1
Pin Configuration
TOP VIEW
OUTA
1
REFA
GND
LDAC
2
3
4
5
10
OUTB
9
REFB
V
DD
DIN
SCLK
MAX5234
MAX5235
8
7
6
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
CS
µMAX
________________________________________________________________
Maxim Integrated Products
1
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.
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
MAX5234/MAX5235
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND .............................................................-0.3V to +6V
Digital Inputs to GND ..............................................-0.3V to +6V
REF_, OUT_ to GND ................................-0.3V to (V
DD
+ 0.3V)
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 5.60mW/°C above +70°C) .........444mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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—MAX5235
(V
DD
= +4.5V to +5.5V, GND = 0, V
REFA
= V
REFB
= +2.5V, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
Full-Scale Voltage
Full-Scale Temperature
Coefficient
Offset Temperature Coefficient
Power-Supply Rejection
DC Crosstalk
REFERENCE INPUT
Reference Input Range
Reference Input Resistance
Reference Current in Shutdown
Reference -3dB Bandwidth,
Slew-Rate Limited
Reference Feedthrough
Signal-to-Noise plus Distortion
Ratio
SINAD
V
REF
R
REF
I
REF
Input code = FFF hex, V
REF
_ = 0.5V
P-P
+
1.5V
DC
Input code = 000 hex, V
REF
_ = 3.6V
P-P
+
1.8V
DC
, f = 1kHz
Input code = FFF hex, V
REF
_ = 2V
P-P
+
1.5V
DC
, f = 10kHz
(Note 5)
Minimum with code 555 hex and AAA hex
0.25
28
37
±1
2.60
V
kΩ
µA
V
FS
TCV
FS
TCV
OS
PSR
4.5V
≤
V
DD
≤
5.5V
(Note 4)
Code = FFF hex, T
A
= +25°C (Note 3)
Normalized to 4.095V
4.087
4.095
2
±8
15
200
100
N
INL
DNL
V
OS
(Note 2)
MAX5235A (Note 1)
MAX5235B (Note 1)
12
±0.5
±1
±1
±5
±3
4.103
Bits
LSB
LSB
mV
LSB
V
ppm/°C
µV/°C
µV
µV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MULTIPLYING MODE PERFORMANCE
350
-80
79
kHz
dB
dB
2
_______________________________________________________________________________________
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
ELECTRICAL CHARACTERISTICS—MAX5235 (continued)
(V
DD
= +4.5V to +5.5V, GND = 0, V
REFA
= V
REFB
= +2.5V, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER
DIGITAL INPUT
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate
Voltage-Output Settling Time
Output-Voltage Swing
Time Required for Output to Settle
After Turning on V
DD
Time Required for Output to
Settle After Exiting Full Power-
Down
Time Required for Output to
Settle After Exiting DAC Power-
Down
Digital Feedthrough
Major-Carry Glitch Energy
POWER SUPPLIES
Power-Supply Voltage
Power-Supply Current
Power-Supply Current in Power-
Down and Shutdown Modes
V
DD
I
DD
I
SHDN
(Note 8)
Full power-down mode
One DAC shutdown mode
Both DACs shutdown mode
4.5
360
1
190
26
5.5
450
5
215
42
V
µA
µA
SR
To
±0.5LSB,
V
STEP
=
±4V,
0.25V < V
OUT
< (V
DD
- 0.25V)
(Note 6)
(Note 7)
0.6
10
0 to
V
DD
70
V/µs
µs
V
µs
V
IH
V
IL
V
HYS
Digital inputs = 0 or V
DD
8
200
±1
0.7 x
V
DD
0.3 x
V
DD
V
V
mV
µA
pF
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5234/MAX5235
(Note 7)
70
µs
(Note 7)
CS
= V
DD
, f
SCLK
= 100kHz, V
SCLK
= 5V
P-P
5
40
60
µs
nV-s
nV-s
_______________________________________________________________________________________
3
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
MAX5234/MAX5235
ELECTRICAL CHARACTERISTICS—MAX5234
(V
DD
= +2.7V to +3.6V, GND = 0, V
REFA
= V
REFB
= +1.25V, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
Full-Scale Voltage
Temperature Coefficient
Offset Temperature Coefficient
Power-Supply Rejection
DC Crosstalk
REFERENCE INPUT
Reference Input Range
Reference Input Resistance
Reference Current in Shutdown
Reference -3dB Bandwidth, Slew-
Rate Limited
Reference Feedthrough
Signal-to-Noise plus Distortion
Ratio
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate
Voltage-Output Settling Time
Output-Voltage Swing
SR
To
±0.5LSB,
V
STEP
=
±2V,
0.25V < V
OUT
< (V
DD
- 0.25V)
(Note 6)
0.6
10
0 to
V
DD
V/µs
µs
V
V
IH
V
IL
V
HYS
Digital inputs = 0 or V
DD
8
200
±1
0.7 x
V
DD
0.3 x
V
DD
V
V
mV
µA
pF
SINAD
V
REF
R
REF
I
REF
Input code = FFF hex, V
REF
_ = 0.5V
P-P
+
0.75V
DC
Input code = 000 hex, V
REF
_ = 1.6V
P-P
+
0.8V
DC
, f = 1kHz
Input code = FFF hex, V
REF
_ = 0.6V
P-P
+
0.9V
DC
, f = 10kHz
(Note 5)
Minimum with code 555 hex and AAA hex
0.25
28
37
±1
1.50
V
kΩ
µA
N
INL
DNL
V
OS
GE
V
FS
TCV
FS
TCV
OS
PSR
2.7V
≤
V
DD
≤
3.6V
(Note 4)
Code = FFF hex, T
A
= +25°C (Note 3)
Normalized to 2.0475V
2.041
2.0475
4
±8
18
280
100
(Note 2)
MAX5234A (Note 1)
MAX5234B (Note 1)
12
±0.5
±1
±1
±5
±6
2.054
Bits
LSB
LSB
mV
LSB
V
ppm/°C
µV/°C
µV
µV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MULTIPLYING MODE PERFORMANCE
350
-80
79
kHz
dB
dB
4
_______________________________________________________________________________________
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
ELECTRICAL CHARACTERISTICS—MAX5234 (continued)
(V
DD
= +2.7V to +3.6V, GND = 0, V
REFA
= V
REFB
= +1.25V, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
PARAMETER
Time Required for Output to Settle
After Turning on V
DD
Time Required for Output to
Settle After Exiting Full Power-
Down
Time Required for Output to
Settle After Exiting DAC Power-
Down
Digital Feedthrough
Major Carry Glitch Energy
POWER SUPPLIES
Power-Supply Voltage
Power-Supply Current
Power-Supply Current in Power-
Down and Shutdown Modes
V
DD
I
DD
I
SHDN
(Note 8)
Full power-down mode
One DAC shutdown mode
Both DACs shutdown mode
2.7
325
0.4
175
25
3.6
430
5
200
40
µA
V
µA
SYMBOL
(Note 7)
CONDITIONS
MIN
TYP
MAX
60
UNITS
µs
MAX5234/MAX5235
(Note 7)
60
µs
(Note 7)
CS
= V
DD
, f
SCLK
= 100kHz, V
SCLK
= 3V
P-P
5
115
50
µs
nV-s
nV-s
TIMING CHARACTERISTICS—MAX5235 (FIGURES 1 AND 2)
(V
DD
= +4.5V to +5.5V, GND = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SCLK Clock Period
SCLK Pulse Width High
SCLK Pulse Width Low
CS
Fall to SCLK Rise Setup Time
SCLK Rise to
CS
Rise Hold Time
DIN Setup Time
DIN Hold Time
SCLK Rise to
CS
Fall Delay
CS
Rise to SCLK Rise Hold Time
CS
Pulse Width High
LDAC
Pulse Width Low
CS
Rise to
LDAC
Rise Hold Time
SYMBOL
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
CS0
t
CS1
t
CSW
t
LDL
t
CSLD
(Note 9)
CONDITIONS
MIN
74
30
30
30
0
30
0
10
30
75
30
40
TYP
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
_______________________________________________________________________________________
5
MEMS传感器
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