19-0741; Rev 1; 5/09
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
General Description
The MAX5661 single 16-bit DAC with precision high-
voltage amplifiers provides a complete solution for pro-
grammable current and voltage-output applications.
The output amplifiers swing to industry-standard levels
of ±10V (voltage output) or source from 0mA (or from
4mA) to 20mA (current output). The voltage output
(OUTV) drives resistive loads greater than 2kΩ and
capacitive loads of up to 1.2µF. Voltage-output force-
sense connections compensate for series protection
resistors and field-wiring resistance. Short-circuit pro-
tection on the voltage output limits output current to
10mA (typ) sourcing or -11.5mA (typ) sinking. The cur-
rent output (OUTI) drives resistive loads up to 37.5V
(max) and inductive loads up to 1H.
The MAX5661 provides either a current output or a volt-
age output. Only one output is active at any given time,
regardless of the configuration. The MAX5661 voltage
output operates with ±13.48V to ±15.75V supplies
(V
DDV
, V
SSV
) and the current output operates with a
single +13.48V to +40V supply (V
DDI
). A +4.75V to
+5.25V digital supply (V
CC
) powers the rest of the inter-
nal circuitry. A buffered reference input accepts an
external +4.096V reference voltage.
Update the DAC outputs using software commands or
the asynchronous
LDAC
input. An asynchronous
CLR
input sets the DAC outputs to the value stored in the
clear register or to zero. The
FAULT
output asserts
when the DAC’s current output is an open circuit, the
DAC’s voltage output is a short circuit, or when the
CLR
input is low.
The MAX5661 communicates through a 4-wire 10MHz
SPI™-/QSPI™-/MICROWIRE™-compatible serial inter-
face. The DOUT output allows daisy chaining of multi-
ple devices. The MAX5661 is available in a 10mm x
10mm, 64-pin, LQFP package and operates over the
-40°C to +105°C temperature range.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
PART
MAX5661GCB+
Features
♦
10-Bit Programmable Full-Scale Output
Adjustment for Up to ±25% Over Range
♦
Programmable Voltage Output
Unipolar Range: 0 to +10.24V ±25%
Bipolar Range: ±10.24V ±25%
♦
Programmable Current Output
Unipolar Low Range: 0 to 20.45mA
Unipolar High Range: 3.97mA to 20.45mA
♦
Flexible Analog Supplies (See Table 16)
±13.48V to ±15.75V for Voltage Output
+13.48V to +40V for Current Output
♦
Force-Sense Connections (Voltage Output)
for Differential Voltage-Output Remote Sensing
♦
Voltage-Output Current Limit
♦
Dropout Detector Senses Out-of-Regulation
Current Output
♦
CLR
and
LDAC
Inputs for Asynchronous DAC
Updates
♦
CLR
Input Resets Output to Programmed Value or
Zero Code
♦
FAULT
Output Indicates Open-Circuited Current
Output, Short-Circuited Voltage Output, or Clear
State
♦
Temperature Drift
Voltage Output: ±0.4ppm FSR/°C
Current Output: ±7.9ppm FSR/°C
♦
Small 64-Pin LQFP Package (10mm x 10mm)
MAX5661
Ordering Information
TEMP RANGE
-40°C to +105°C
PIN-PACKAGE
64 LQFP
Applications
Industrial Analog Output Modules
Industrial Instrumentation
Programmable Logic Controls/Distributed
Control Systems
Process Control
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
MAX5661
ABSOLUTE MAXIMUM RATINGS
V
DDCORE
to V
SSV
...................................................-0.3V to +42V
V
DDI
to AGND.........................................................-0.3V to +42V
V
DDV
to AGND........................................................-0.3V to +17V
V
SSV
to AGND ........................................................-17V to +0.3V
V
DDI
to V
SSV
...........................................................-0.3V to +59V
V
CC
to DGND ...........................................................-0.3V to +6V
DGND, DUTGND, DUTGNDS, DACGND,
DACGNDS to AGND ............................................-0.3V to +6V
Digital Inputs (CS, DIN, SCLK,
CLR, LDAC,
CNF_) to DGND .....................................-0.3V to (V
CC
+ 0.3V)
Digital Outputs (DOUT,
FAULT)
to DGND....................................
...............................-0.3V to the lesser of (V
CC
+ 0.3V) or +6V
REF to AGND............................................................-0.3V to +6V
OUTV, SVP, SVN, COMPV to V
SSV
...........-0.3V to (V
DDV
+ 0.3V)
OUTI, COMPI, OUTI4/0 to AGND ..............-0.3V to (V
DDI
+ 0.3V)
Maximum Current into Any Pin .......................................±100mA
Continuous Power Dissipation (T
A
= +70°C)
64-Pin, 10mm x 10mm TQFP (derate 25mW/°C
above +70°C)............................................................ 2000mW
Junction-to-Ambient Thermal Resistance
in Still Air (θ
JA
) ...………………………………………….40°C/W
Junction-to-Case Thermal Resistance (θ
JC
)...................... 8°C/W
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature ......................................................+150°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
(V
CC
= +5V, C
COMPI
= 22nF, V
DDV
= V
DDCORE
= +15V, V
SSV
= -15V, V
DDI
= +24V, V
REF
= +4.096V, V
AGND
= V
DGND
= V
DUTGND
=
V
DACGND
= 0V, R
SERIES
= 47Ω, OUTV loaded with 2kΩ || 100pF to AGND, OUTI loaded with 500Ω to AGND, T
A
= -40°C to +105°C,
unless otherwise noted. Typical values are at T
A
= +25°C. See the
Typical Operating Circuit.)
(Note 1)
PARAMETER
STATIC PERFORMANCE
Resolution
V
OUT
I
OUT
, V
DDI
= 40V,
V
SSV
= V
DDV
= 0
(Note 2)
I
OUT
, V
DDI
= V
DDV
= +15V, V
SSV
= -15V
(Note 2)
Differential Nonlinearity
Zero-Scale Voltage Error
DNL
V
ZSE
4–20mA
0 to 20mA
4–20mA
0 to 20mA
-1.0
±0.01
±2.0
-45
-60
3.955
3.94
-15
-30
-15
-30
-30
-30
3.97
3.97
±2.0
±2.0
±3.0
±7.0
±0.5
±0.2
±2
±6
+1.0
±3
±10
-15
0
3.985
4.00
+15
+30
+15
+30
ppm of
FSR/
o
C
µA
LSB
mV
µA
mA
16
±0.2
±6
±10
LSB
±4
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Integral Nonlinearity
INL
Guaranteed monotonic (Note 3)
OUTV
0 to 20mA mode
Unipolar
Bipolar
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
Unipolar
Bipolar
Zero-Scale Current
(Note 4)
4–20mA mode
0 to 20mA mode
Zero-Scale Current Error
(Note 4)
I
ZSE
4–20mA mode
Voltage-Offset Error Drift
TCV
OS
OUTV
2
________________________________________________________________________________________
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
MAX5661
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, C
COMPI
= 22nF, V
DDV
= V
DDCORE
= +15V, V
SSV
= -15V, V
DDI
= +24V, V
REF
= +4.096V, V
AGND
= V
DGND
= V
DUTGND
=
V
DACGND
= 0V, R
SERIES
= 47Ω, OUTV loaded with 2kΩ || 100pF to AGND, OUTI loaded with 500Ω to AGND, T
A
= -40°C to +105°C,
unless otherwise noted. Typical values are at T
A
= +25°C. See the
Typical Operating Circuit.)
(Note 1)
PARAMETER
Current-Offset Error Drift
SYMBOL
TCI
OS
OUTI
OUTV
Gain Error
GE
OUTI
OUTV
Gain-Error Drift
TCGE
OUTI
CONDITIONS
0 to 20mA
4–20mA
Unipolar
Bipolar
T
A
= +25°C
T
A
= T
MIN
to T
MAX
Unipolar
Bipolar
0 to 20mA
4–20mA
MIN
TYP
±4
±4
±2.5
±4.5
±8.0
±40
±0.4
±0.4
-7.9
-8.6
20
20
0.013
0.017
200
µV/V
200
5
µA/V
5
ppm of
FSR/
o
C
±10
±20
±70
±130
MAX
UNITS
ppm of
FSR/
o
C
mV
µA
OUTV, unipolar output, full-scale code,
V
DDV
from +13.48V to +15.75V
OUTV, bipolar output, zero-scale code,
V
SSV
from -13.48V to -15.75V
OUTI, full-scale code, V
DDI
from +13.48V to
+40V, V
SSV
= -15.75V, V
DDV
= +15.75V
OUTI, full-scale code, V
DDI
from +13.48V to
+40V, V
DDV
= V
SSV
= 0
REFERENCE INPUT
Reference Input Current
Reference Input Voltage Range
DYNAMIC PERFORMANCE
Output-Voltage Noise at 10kHz
Output-Current Noise at 10kHz
Voltage-Output Slew Rate
Current-Output Slew Rate
Major Code Transition Glitch
e
n
i
n
Unipolar output, V
OUTV
= +10.48V
Bipolar output, V
OUTV
= ±10.48V
0 to 20mA range
4–20mA range
C
OUTV
= 100pF, R
OUTV
= 2kΩ,
step = 20V, C
EXT
= 0nF
L
OUTI
= 0, R
OUTI
= 500Ω, step = 20mA
OUTV
From code 7FFFh
to code 8000h
Outputs set to
zero scale, all
digital inputs from
0V to V
CC
and
back to 0V
OUTI
OUTV
0 to 20mA
4–20mA
I
REF
V
REF
4.0
Power-Supply Rejection Ratio
PSRR
0.050
4.096
230
300
132
120
0.1
0.15
1
2.0
2.0
0.1
1
4.2
µA
V
nV/√Hz
pA/√Hz
V/µs
mA/µs
µV•s
nA•s
nV•s
Digital Feedthrough
OUTI, R
L
= 500Ω
0.2
pA•s
_______________________________________________________________________________________
3
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
MAX5661
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, C
COMPI
= 22nF, V
DDV
= V
DDCORE
= +15V, V
SSV
= -15V, V
DDI
= +24V, V
REF
= +4.096V, V
AGND
= V
DGND
= V
DUTGND
=
V
DACGND
= 0V, R
SERIES
= 47Ω, OUTV loaded with 2kΩ || 100pF to AGND, OUTI loaded with 500Ω to AGND, T
A
= -40°C to +105°C,
unless otherwise noted. Typical values are at T
A
= +25°C. See the
Typical Operating Circuit.)
(Note 1)
PARAMETER
SETTLING TIME
Bipolar output,
C
COMPV
= 3.3nF,
to 0.1%
Bipolar output,
C
COMPV
= 0nF,
to 0.1%
Unipolar output,
C
COMPV
= 3.3nF,
to 0.1%
Unipolar output,
C
COMPV
= 0nF,
to 0.1%
0 to 20.45mA
range to 0.1%
Current-Output Settling Time
3.97mA to
20.45mA range
to 0.1%
C
OUTV
= 1nF,
R
OUTV
= 2kΩ
C
OUTV
= 1.2µF,
R
OUTV
= 2kΩ
C
OUTV
= 100pF,
R
OUTV
= 2kΩ
C
OUTV
= 1nF,
R
OUTV
= 2kΩ
C
OUTV
= 1.2µF,
R
OUTV
= 2kΩ
C
OUTV
= 100pF,
R
OUTV
= 2kΩ
R
OUTI
= 500Ω
L
OUTI
= 1mH
L
OUTI
= 10mH
L
OUTI
= 1H
R
OUTI
= 500Ω
L
OUTI
= 1mH
L
OUTI
= 10mH
L
OUTI
= 1H
3
ms
5.44
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
244
µs
Voltage-Output Settling Time
1.8
ms
3.64
130
1.5
1.66
1.66
1.97
1.43
1.58
1.58
1.73
µs
ms
4
________________________________________________________________________________________
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
MAX5661
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, C
COMPI
= 22nF, V
DDV
= V
DDCORE
= +15V, V
SSV
= -15V, V
DDI
= +24V, V
REF
= +4.096V, V
AGND
= V
DGND
= V
DUTGND
=
V
DACGND
= 0V, R
SERIES
= 47Ω, OUTV loaded with 2kΩ || 100pF to AGND, OUTI loaded with 500Ω to AGND, T
A
= -40°C to +105°C,
unless otherwise noted. Typical values are at T
A
= +25°C. See the
Typical Operating Circuit.)
(Note 1)
PARAMETER
OUTV OUTPUT
OUTV Linear Output Voltage
Range
Default OUTV Output Voltage
Ranges (0V to Full Scale)
Minimum OUTV Output Voltage
Range (FS to ADJ)
Maximum OUTV Output Voltage
Range (FS to ADJ)
DC Output Impedance
OUTV Off-State Leakage Current
OUTV Short-Circuit Output
Current
Minimum OUTV Resistive Load
Maximum OUTV Capacitive Load
OUTI OUTPUT
OUTI Voltage Compliance
OUTI Output Current Range
DC Output Impedance
OUTI Off-State Leakage Current
Current-Mode Dropout Detection
FEEDBACK SENSE BUFFER INPUTS
Input Current
Input Voltage Range
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Capacitance
Input Leakage Current
DIGITAL OUTPUTS
Output High Voltage
Output Low Voltage
V
OH
V
OL
I
SOURCE
= 400µA, except
FAULT
V
CC
= 4.75V
I
SINK
= 1.6mA
I
SINK
= 10mA
V
CC
- 0.5
0.4
1
V
V
V
IH
V
IL
C
IN
I
IN
V
IN
= 0V or V
CC
-1
V
CC
= 4.75V to 5.25V
V
CC
= 4.75V to 5.25V
10
+1
2.4
0.8
V
V
pF
µA
V
SSV
+ 1.7V < SVP, SVN < V
DDV
- 1.7V
SVP, SVN
V
SSV
+ 1.7
0.05
1
V
DDV
- 1.7
µA
V
Full-scale output, R
OUTI
= 1500Ω (Note 5)
0 to 20mA mode includes FS calibration
(Note 4)
4–20mA mode includes FS calibration
OUTI = full scale
OUTI off or disabled,
0V < V
OUTI
< V
DDI
V
DDI
- V
OUTI
,
FAULT
does not assert
0
3.97
45
0.1
1.3
10
V
DDI
- 2.5
20.45
20.45
MΩ
µA
V
V
mA
I
SC
R
OUTV
C
OUTV
OUTV off or disabled,
output leakage current from OUTV to AGND
Sourcing
Sinking
Full-scale code
C
COMPV
= 3.3nF
C
COMPV
= 0nF
7
-18.0
V
OUT
V
OUT
V
OUT
Unipolar, V
DDV
= +13.48V, V
SSV
= -13.48V
Bipolar, V
DDV
= +13.48V, V
SSV
= -13.48V
Unipolar
Bipolar
Unipolar
Bipolar
V
SSV
+
3.0
0
-10.48
+7.68
±7.68
+12.8
±12.8
0.1
2.5
10
-11.5
2
1.2
1
10
13
-9.0
V
DDV
-
3.0
+10.48
+10.48
V
V
V
V
Ω
µA
mA
kΩ
µF
nF
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
_______________________________________________________________________________________
5
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