19-1580; Rev 2; 12/01
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
General Description
The MAX5188 is a dual 8-bit, alternate-phase-update,
current-output digital-to-analog converter (DAC)
designed for superior performance in systems requiring
analog signal reconstruction with low distortion and
low-power operation. The MAX5191 provides equal
specifications, with on-chip output resistors for voltage-
output operation. Both devices are designed for 10pVs
glitch operation to reduce distortion and minimize
unwanted spurious signal components at the output. An
on-board +1.2V bandgap circuit provides a well-regu-
lated, low-noise reference that may be disabled for
external reference operation.
The MAX5188/MAX5191 are designed to provide a high
level of signal integrity for the least amount of power
dissipation. Both DACs operate from a +2.7V to +3.3V
single supply. Additionally, these DACs have three
modes of operation: normal, low-power standby, and
full shutdown. A full shutdown provides the lowest pos-
sible power dissipation with a maximum shutdown cur-
rent of 1µA. A fast wake-up time (0.5µs) from standby
mode to full DAC operation allows for power conserva-
tion by activating the DACs only when required.
The MAX5188/MAX5191 are available in a 28-pin QSOP
package and are specified for the extended (-40°C to
+85°C) temperature range. For pin-compatible 10-bit
versions, refer to the MAX5182/MAX5185 data sheet.
Features
o
+2.7V to +3.3V Single-Supply Operation
o
Wide Spurious-Free Dynamic Range: 70dB
at f
OUT
= 2.2MHz
o
Fully Differential Outputs for Each DAC
o
±0.5% FSR Gain Mismatch Between DAC Outputs
o
Low-Current Standby or Full Shutdown Modes
o
Internal +1.2V Low-Noise Bandgap Reference
o
Small 28-Pin QSOP Package
MAX5188/MAX5191
Ordering Information
PART
MAX5188BEEI
MAX5191BEEI
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 QSOP
28 QSOP
Pin Configuration
Applications
Signal Reconstruction Applications
Digital Signal Processing
Arbitrary Waveform Generators
Imaging Applications
TOP VIEW
CREF1 1
OUT1P 2
OUT1N 3
AGND 4
AV
DD
5
DACEN 6
PD 7
CS 8
CLK 9
N.C. 10
REN 11
DGND 12
DGND 13
D0 14
28 CREF2
27 OUT2P
26 OUT2N
25 REFO
24 REFR
MAX5188
MAX5191
23 DGND
22 DV
DD
21 D7
20 D6
19 D5
18 D4
17 D3
16 D2
15 D1
QSOP
________________________________________________________________
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.
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
MAX5188/MAX5191
ABSOLUTE MAXIMUM RATINGS
AV
DD
, DV
DD
to AGND, DGND .................................-0.3V to +6V
Digital Inputs to DGND.............................................-0.3V to +6V
OUT1P, OUT1N, OUT2P, OUT2N, CREF1,
CREF2 to AGND ....................................................-0.3V to +6V
V
REF
to AGND ..........................................................-0.3V to +6V
AV
DD
to DV
DD
.....................................................................±3.3V
AGND to DGND.....................................................-0.3V to +0.3V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70°C)
28-Pin QSOP (derate 9.00mW/°C above +70°C)..........725mW
Operating Temperature Ranges
MAX5188/MAX5191BEEI ..................................-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
(AV
DD
= DV
DD
= +3V ±10%, AGND = DGND = 0, f
CLK
= 40MHz, I
FS
= 1mA, 400Ω differential output, C
L
= 5pF, 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
Zero-Scale Error
Full-Scale Error
DYNAMIC PERFORMANCE
Output Settling Time
Glitch Impulse
Spurious-Free Dynamic Range
to Nyquist
Total Harmonic Distortion
to Nyquist
Signal-to-Noise Ratio
to Nyquist
DAC-to-DAC Output Isolation
Clock and Data Feedthrough
Output Noise
Gain Mismatch Between DAC
Outputs
ANALOG OUTPUT
Full-Scale Output Voltage
Voltage Compliance of Output
Output Leakage Current
Full-Scale Output Current
DAC External Output Resistor
Load
2
I
FS
DACEN = 0, MAX5188 only
MAX5188 only
MAX5188 only
V
FS
-0.3
-1
0.5
1
400
400
0.8
1
1.5
mV
V
µA
mA
Ω
f
OUT
= 2.2MHz, T
A
= +25°C
SFDR
THD
SNR
f
CLK
= 40MHz
f
CLK
= 40MHz
f
CLK
= 40MHz
f
OUT
= 2.2MHz
All 0s to all 1s
f
OUT
= 500kHz
f
OUT
= 2.2MHz, T
A
= +25°C
f
OUT
= 500kHz
f
OUT
= 2.2MHz, T
A
= +25°C
f
OUT
= 500kHz
f
OUT
= 2.2MHz, T
A
= +25°C
46
57
To ±0.5LSB error band
25
10
72
70
-70
-68
52
52
-60
50
10
±0.5
±1
-63
ns
pVs
dBc
dB
dB
dB
nVs
pA/√Hz
LSB
N
INL
DNL
Guaranteed monotonic
MAX5188
MAX5191
(Note 1)
8
-1
-1
-1
-4
-20
±4
±0.25
±0.25
+1
+1
+1
+4
+20
Bits
LSB
LSB
LSB
LSB
LSB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
________________________________________________________________________________________
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
MAX5188/MAX5191
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +3V ±10%, AGND = DGND = 0, f
CLK
= 40MHz, I
FS
= 1mA, 400Ω differential output, C
L
= 5pF, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
REFERENCE
Output Voltage Range
Output Voltage Temperature
Drift
Reference Output Drive
Capability
Reference Supply Rejection
Current Gain (I
FS
/ I
REF
)
POWER REQUIREMENTS
Analog Power-Supply Voltage
Analog Supply Current
Digital Power-Supply Voltage
Digital Supply Current
Standby Current
Shutdown Current
LOGIC INPUTS AND OUTPUTS
Digital Input High Voltage
Digital Input Low Voltage
Digital Input Current
Digital Input Capacitance
TIMING CHARACTERISTICS
DAC1 DATA to CLK Rise Setup
Time
DAC2 DATA to CLK Fall Setup
Time
DAC1 CLK Rise to DATA Hold
Time
DAC2 CLK Fall to DATA Hold
Time
CS
Fall to CLK Rise Time
CS
Fall to CLK Fall Time
DACEN Rise Time to V
OUT
PD Fall Time to V
OUT
Clock Period
Clock High Time
Clock Low Time
t
CLK
t
CH
t
CL
25
10
10
t
DS1
t
DS2
t
DH1
t
DH2
10
10
0
0
5
5
0.5
50
ns
ns
ns
ns
ns
ns
µs
µs
ns
ns
ns
V
IH
V
IL
I
IN
C
IN
V
IN
= 0 or DV
DD
10
2
0.8
±1
V
V
µA
pF
AV
DD
I
AVDD
DV
DD
I
DVDD
I
STANDBY
I
SHDN
PD = 0, DACEN = 1, digital inputs at 0 or DV
DD
PD = 0, DACEN = 0, digital inputs at 0 or DV
DD
PD = 1, DACEN = X, digital inputs at 0 or DV
DD
(X = don’t care)
PD = 0, DACEN = 1, digital inputs at 0 or DV
DD
2.7
4.2
1
0.5
2.7
2.7
3.3
5
3.3
5
1.5
1
V
mA
V
mA
mA
µA
V
REF
TCV
REF
I
REFOUT
1.12
1.2
50
10
0.5
8
1.28
V
ppm/°C
µA
mV/V
mA/mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Excludes reference and reference resistor (MAX5191) tolerance.
_______________________________________________________________________________________
3
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
MAX5188/MAX5191
Typical Operating Characteristics
(AV
DD
= DV
DD
= +3V, AGND = DGND = 0, 400Ω differential output, I
FS
= 1mA, C
L
= 5pF, T
A
= +25°C, unless otherwise noted.)
INTEGRAL NONLINEARITY
vs. INPUT CODE
MAX5188/91-01
DIFFERENTIAL NONLINEARITY
vs. INPUT CODE
MAX5188/91-02
ANALOG SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5188/91-03
0.150
0.125
0.100
0.075
INL (LSB)
0.100
0.075
0.050
DNL (LSB)
0.025
0
-0.025
-0.050
-0.075
3.00
ANALOG SUPPLY CURRENT (mA)
2.75
MAX5191
0.050
0.025
0
2.50
MAX5188
2.25
-0.025
-0.050
0
32
64
96
128 160 192 224 256
INPUT CODE
2.00
0
32
64
96
128 160 192 224 256
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT CODE
SUPPLY VOLTAGE (V)
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
MAX5188/91-04
DIGITAL SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5188/91-05
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
MAX5188/91-06
3.00
ANALOG SUPPLY CURRENT (mA)
10
DIGITAL SUPPLY CURRENT (mA)
4.00
DIGITAL SUPPLY CURRENT (mA)
MAX5188
3.75
MAX5191
3.50
2.75
MAX5191
8
6
MAX5188
MAX5191
4
2
2.50
MAX5188
2.25
3.25
2.00
-40
-15
10
35
60
85
TEMPERATURE (°C)
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
3.00
-40
-15
10
35
60
85
TEMPERATURE (°C)
STANDBY CURRENT
vs. SUPPLY VOLTAGE
MAX5188/91-07
STANDBY CURRENT
vs. TEMPERATURE
MAX5188/91-08
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MAX5188/91-09
620
610
STANDBY CURRENT (µA)
MAX5191
600
590
MAX5188
580
570
560
2.5
3.0
3.5
4.0
4.5
5.0
600
MAX5191
590
STANDBY CURRENT (µA)
3.8
SHUTDOWN CURRENT (µA)
3.7
580
3.6
MAX5188
MAX5191
570
MAX5188
3.5
560
550
5.5
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
3.4
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
4
_______________________________________________________________________________________
Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs
Typical Operating Characteristics (continued)
(AV
DD
= DV
DD
= +3V, AGND = DGND = 0, 400Ω differential output, I
FS
= 1mA, C
L
= 5pF, T
A
= +25°C, unless otherwise noted.)
INTERNAL REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX5188/91-11
MAX5188/MAX5191
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX5188/91-12
OUTPUT CURRENT
vs. REFERENCE CURRENT
MAX5188/91-13
1.28
1.28
4
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE (V)
1.26
MAX5188
1.25
MAX5191
1.24
1.26
MAX5188
MAX5191
1.24
OUTPUT CURRENT (mA)
1.27
1.27
3
2
1.25
1
1.23
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
1.23
-40
-15
10
35
60
85
TEMPERATURE (°C)
0
0
100
200
300
400
500
REFERENCE CURRENT (µA)
DYNAMIC RESPONSE RISE TIME
MAX5188/91-14
DYNAMIC RESPONSE FALL TIME
MAX5188/91-15
OUT_P
150mV/div
OUT_P
150mV/div
OUT_N
150mV/div
OUT_N
150mV/div
50ns/div
50ns/div
SETTLING TIME
MAX5188/91-16
FFT PLOT, DAC1
MAX5188/91-17
FFT PLOT, DAC2
f
CLK
= 40MHz
f
OUT
= 2.2MHz
MAX5188/91-18
0
-10
-20
-30
-40
-50
-60
-70
-80
f
CLK
= 40MHz
f
OUT
= 2.2MHz
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
OUT_N
100mV/div
(dBc)
OUT_P
100mV/div
-90
-100
-110
-120
12.5ns/div
0
2
4
6
8
10 12 14 16 18 20
OUTPUT FREQUENCY (MHz)
(dBc)
0
2
4
6
8
10 12 14 16 18 20
OUTPUT FREQUENCY (MHz)
_______________________________________________________________________________________
5
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