19-1711; Rev 1; 1/01
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
General Description
The MAX5270 contains eight 13-bit, voltage-output digi-
tal-to-analog converters (DACs). On-chip precision out-
put amplifiers provide the voltage outputs. The device
operates from +12V/-12V supplies. Its output voltage
swing ranges from 0V to +8.192V and is achieved with
no external components. The MAX5270 has three pairs
of differential reference inputs; two of these pairs are
connected to two DACs each, and a third pair is con-
nected to four DACs. The references are independently
controlled, providing different full-scale output voltages
to the respective DACs. The MAX5270 operates within
the following voltage ranges: V
DD
= +11.4V to +12.6V,
V
SS
= -11.4V to -12.6V, and V
CC
= +4.75V to +5.25V.
The MAX5270 features double-buffered interface logic
with a 13-bit parallel data bus. Each DAC has an input
latch and a DAC latch. Data in the DAC latch sets the
output voltage. The eight input latches are addressed
with three address lines. Data is loaded to the input
latch with a single-write instruction. An asynchronous
load input (LD) transfers data from the input latch to the
DAC latch. The
LD
input controls all DACs; therefore, all
DACs can be updated simultaneously by asserting the
LD
pin.
An asynchronous
CLR
input sets the output of all eight
DACs to the respective DUTGND input of the op amp.
Note that
CLR
is a CMOS input, which is powered by
V
DD
. All other logic inputs are TTL/CMOS compatible.
The “A” grade of the MAX5270 has a maximum INL of
±2LSBs, while the “B” grade has a maximum INL of
±4LSBs. Both grades are available in 44-pin MQFP
packages.
o
Eight DACs in a Single Package
o
Buffered Voltage Outputs
o
Voltage Swing Between 0 and +8.192V
o
22µs Output Settling Time
o
Drives up to 10,000pF Capacitive Load
o
30mV Low Output Glitch
o
Low Power Consumption: 10mA (typ)
o
Small 44-Pin MQFP Package
o
Double-Buffered Digital Inputs
o
Asynchronous Load Updates All DACs
Simultaneously
o
Asynchronous
CLR
Forces All DACs to DUTGND
Potential
Features
o
Full 13-Bit Performance Without Adjustments
MAX5270
Ordering Information
PART
MAX5270ACMH
MAX5270BCMH
MAX5270AEMH
MAX5270BEMH
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
44 MQFP
44 MQFP
44 MQFP
44 MQFP
INL
(LSB)
±2
±4
±2
±4
Pin Configuration
OUTE
DUTGNDEF
OUTF
OUTG
37
36
35
34
Applications
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
Minimum Component Count Analog Systems
Digital Offset/Gain Adjustment
SONET Applications
Automatic Test Equipment (ATE)
TOP VIEW
44
43
42
41
40
39
38
OUTB
OUTC
DUTGNDCD
OUTD
REFCDEF-
REFCDEF+
V
DD
DUTGNDAB
OUTA
REFAB-
REFAB+
V
DD
V
SS
LD
A2
A1
A0
CS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
33
32
31
30
29
28
27
26
25
24
23
MAX5270
DUTGNDGH
OUTH
REFGH-
REFGH+
V
SS
CLR
D12
D11
D10
D9
D8
Functional Diagram appears at end of data sheet.
WR
V
CC
GND
D0
D1
D2
D3
D4
D5
D6
D7
MQFP-44
________________________________________________________________
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.
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
MAX5270
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND ........................................................-0.3V to +13.2V
V
SS
to GND ........................................................ -13.2V to +0.3V
V
CC
to GND ............................................................ -0.3V to +6V
A_, D_,
WR, CS, LD, CLR
to GND.............+0.3V to (V
CC
+ 0.3V)
REF_ _ _ _+, DUTGND_ _ ................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
OUT_ ..........................................................................V
DD
to V
SS
Maximum Current into REF_ _ _ _ _, DUTGND_ _ ...........±10mA
Maximum Current into Any Signal Pin ............................. ±50mA
OUT_ Short-Circuit Duration to V
DD
, V
SS
, and GND .............. 1s
Continuous Power Dissipation (T
A
= +70°C)
44-Pin MQFP (derate 11.1mW/°C above +70°C)........ 870mW
Operating Temperature Ranges
MAX5270_CMH ................................................. 0°C to +70°C
MAX5270_EMH............................................... -40°C to +85°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
DD
= +12V, V
SS
= -12V, V
CC
= +5V, V
GND
= V
DUTGND_ _
= 0, V
REF
_ _ _ _+ = +4.096V, V
REF
_ _ _ _- = 0, R
L
= 10MΩ,
C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Resolution
Relative Accuracy
Differential Nonlinearity
Zero-Scale Error
Full-Scale Error
Gain Error
Gain Temperature Coefficient
DC Crosstalk
REFERENCE INPUTS
Input Resistance
Input Current
REF_ _ _ _+ Input
REF_ _ _ _- Input
(REF_ _ _ _+) - (REF_ _ _ _-)
Range
ANALOG OUTPUTS
Maximum Output Voltage
Minimum Output Voltage
Resistive Load to GND
Capacitive Load to GND
DC Output Impedance
(Note 2)
(Note 1)
5
10,000
0.5
9
V
DD
- 2
0
V
V
kΩ
pF
Ω
REF_ _ _ _- tied to AGND externally
2
2
0
4.5
1
±1
±10
4.5
MΩ
µA
V
V
V
(Note 1)
(Note 1)
SYMBOL
N
INL
DNL
ZSE
FSE
MAX5270A
MAX5270B
Guaranteed monotonic
±2
±4
±2
0.15
14
CONDITIONS
MIN
13
±2
±4
±1
±4
±8
±5
20
75
TYP
MAX
UNITS
Bits
LSB
LSB
LSB
LSB
LSB
ppm
FSR/°C
µV
STATIC PERFORMANCE (ANALOG SECTION)
2
_______________________________________________________________________________________
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +12V, V
SS
= -12V, V
CC
= +5V, V
GND
= V
DUTGND_ _
= 0, V
REF
_ _ _ _+ = +4.096V, V
REF
_ _ _ _- = 0, R
L
= 10MΩ,
C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Input Impedance per DAC
Input Current per DAC
Input Range
DIGITAL INPUTS
Input Voltage High
Input Voltage Low
Input Capacitance
Input Current
POWER SUPPLIES
V
DD
Analog Power Supply
Range
V
SS
Analog Power Supply
Range
Digital Power Supply
Positive Supply Current
Negative Supply Current
Digital Supply Current
PSRR,
∆V
OUT
/
∆V
DD
PSRR,
∆V
OUT
/
∆V
SS
V
DD
V
SS
V
CC
I
DD
I
SS
I
CC
(Note 3)
(Note 4)
(Note 3)
(Note 4)
V
DD
= 14V ±5%
V
SS
= -9V ±5%
94
98
11.4
-11.4
4.75
5
10
10
12.6
-12.6
5.25
13
13
0.5
5
V
V
V
mA
mA
mA
dB
dB
V
IH
V
IL
C
IN
I
IN
(Note 1)
V
IN
= 0 or V
CC
-1
2.4
0.8
10
1
V
V
pF
µA
(Note 1)
SYMBOL
CONDITIONS
MIN
40
-165
-2
TYP
84
100
2
MAX
UNITS
kΩ
µA
V
DUTGND_ _ CHARACTERISTICS
MAX5270
INTERFACE TIMING CHARACTERISTICS
(V
DD
= +12V, V
SS
= -12V, V
CC
= +5V, V
GND
= V
DUTGND_ _
= 0, V
REF
_ _ _ _+ = +4.096V, V
REF
_ _ _ _- = 0, R
L
=10MΩ, C
L
= 50pF,
Figure 2, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
CS
Pulse Width Low
WR
Pulse Width Low
LD
Pulse Width Low
CS
Low to
WR
Low
CS
High to
WR
High
Data Valid to
WR
Setup
Data Valid to
WR
Hold
Address Valid to
WR
Setup
Address Valid to
WR
Hold
SYMBOL
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
CONDITIONS
MIN
50
50
50
0
0
50
0
15
0
TYP
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
_______________________________________________________________________________________
3
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
MAX5270
DYNAMIC CHARACTERISTICS
(V
DD
= +12V, V
SS
= -12V, V
CC
= +5V, V
GND
= V
DUTGND_ _
= 0, V
REF
_ _ _ _+ = +4.096V, V
REF
_ _ _ _- = 0, R
L
= 10MΩ,
C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Output Settling Time
Output Slew-Rate
Digital Feedthrough
Digital Crosstalk
Digital-to-Analog Glitch Impulse
DAC-to-DAC Crosstalk
Channel-to-Channel Isolation
Output Noise Spectral Density
At ƒ = 1kHz
(Note 5)
(Note 6)
SYMBOL
CONDITIONS
To ±1/2LSB of full scale
MIN
TYP
22
1
3
3
120
3
100
120
MAX
UNITS
µs
V/µs
nV/s
nV/s
nV/s
nV/s
dB
nV/√Hz
Note 1:
Guaranteed by design. Not production tested.
Note 2:
Guaranteed by design when 220Ω resistor is in series with C
L
= 10,000pF.
Note 3:
All digital inputs (D_, A_,
WR, CS, LD,
and
CLR)
at GND or V
CC
potential.
Note 4:
All digital inputs (D_, A_,
WR, CS, LD,
and
CLR)
at +0.8V or +2.4V.
Note 5:
All data inputs (D0 to D12) transition from GND to V
CC
, with
WR
= V
CC
.
Note 6:
All digital inputs (D_, A_,
WR, CS, LD,
and
CLR)
at +0.8V or +2.4V.
Typical Operating Characteristics
(V
DD
= +12V, V
SS
= -12V, V
CC
= +5V, V
GND
= V
DUTGND_ _
= 0, V
REF
_ _ _ _+ = +4.096V, V
REF
_ _ _ _- = 0, T
A
= +25°C, unless other-
wise noted.)
INTEGRAL NONLINEARITY
vs. DIGITAL CODE
MAX5270-01
DIFFERENTIAL NONLINEARITY
vs. DIGITAL CODE
MAX5270-02
INL AND DNL ERROR vs. TEMPERATURE
MAX5270-03
0.4
0.3
0.2
0.4
0.3
0.2
0.4
INL
0.3
ERROR (LSB)
DNL (LSB)
INL (LSB)
0.1
0
-0.1
-0.2
-0.3
-0.4
0
2048
4096
DIGITAL CODE
6144
8192
0.1
0
-0.1
-0.2
-0.3
-0.4
0
2048
4096
DIGITAL CODE
6144
8192
0.2
DNL
0.1
0
0
10
20
30
40
50
60
70
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
Typical Operating Characteristics (continued)
(V
DD
= +12V, V
SS
= -12V, V
CC
= +5V, V
GND
= V
DUTGND_ _
= 0, V
REF
_ _ _ _+ = +4.096V, V
REF
_ _ _ _- = 0, T
A
= +25°C, unless other-
wise noted.)
ZERO-SCALE AND FULL-SCALE ERROR
vs. TEMPERATURE
MAX5270-04
MAX5270
I
DD
AND I
SS
vs. TEMPERATURE (UNLOADED)
MAX5270-05
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
MAX5270-06
0.20
0.15
0.10
ERROR (LSB)
10.4
10.2
10.0
9.8
I
DD
, I
SS
(mA)
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
I
SS
I
DD
25
23
SUPPLY CURRENT (µA)
70
0.05
0
-0.05
-0.10
-0.15
-0.20
0
10
20
30
40
50
60
70
TEMPERATURE (°C)
ZERO SCALE
FULL SCALE
21
19
17
15
0
25
TEMPERATURE (°C)
0
10
20
30
40
50
60
70
TEMPERATURE (°C)
REFERENCE INPUT FREQUENCY RESPONSE
MAX5270-07
SETTLING TIME vs. CAPACITIVE LOAD
MAX5270-08
LARGE-SIGNAL STEP RESPONSE
D12
5V/div
MAX5270-09
5
0
-5
AMPLITUDE (dB)
-10
-15
-20
-25
-30
-35
-40
1k
10k
100
90
80
SETTLING TIME (µs)
70
60
50
40
30
20
10
0
REF_ _ _ _ _ = 200mVp-p
OUT
1V/div
100k
FREQUENCY (Hz)
1M
10M
10
100
1000
10k
100k
5µs/div
CAPACITIVE LOAD (pF)
POSITIVE SETTLING TIME
MAX5270-10
NEGATIVE SETTLING TIME
MAX5270-11
NOISE VOLTAGE DENSITY
vs. FREQUENCY
MAX5270-12
1000
NOISE VOLTAGE DENSITY (nV/√Hz)
100
LD
LD
OUT
1mV/div
OUT
1mV/div
5µs/div
5µs/div
10
100
1k
10k
FREQUENCY (Hz)
_______________________________________________________________________________________
5
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