19-1581; Rev 4; 5/03
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-Output DACs
General Description
The MAX5186 contains two 8-bit, simultaneous-update,
current-output digital-to-analog converters (DACs)
designed for superior performance in communications
systems requiring analog signal reconstruction with low
distortion and low-power operation. The MAX5189 pro-
vides equal specifications, with on-chip precision resis-
tors for voltage output operation. The MAX5186/
MAX5189 are designed for a 10pV-s glitch operation to
minimize unwanted spurious signal components at the
output. An on-board 1.2V bandgap circuit provides a
well-regulated, low-noise reference that can be dis-
abled for external reference operation.
The MAX5186/MAX5189 are designed to provide a high
level of signal integrity for the least amount of power dissi-
pation. Both DACs operate from a single supply voltage
of 2.7V to 3.3V. Additionally, these DACs have three
modes of operation: normal, low-power standby, and
complete shutdown, which provides the lowest possible
power dissipation with a 1µA (max) shutdown current. A
fast wake-up time (0.5µs) from standby mode to full DAC
operation allows power conservation by activating the
DACs only when required.
The MAX5186/MAX5189 are packaged in a 28-pin
QSOP and are specified for the extended (-40°C to
+85°C) temperature range. For higher resolution, dual
10-bit versions, refer to the MAX5180/MAX5183 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 at f
OUT
= 2.2MHz
o
±0.15° Phase Mismatch at f
OUT
= 2.2MHz
o
Low-Current Standby or Full Shutdown Modes
o
Internal 1.2V, Low-Noise Bandgap Reference
o
Small 28-Pin QSOP Package
MAX5186/MAX5189
Ordering Information
PART
MAX5186BEEI
MAX5189BEEI
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 QSOP
28 QSOP
Pin Configuration
TOP VIEW
Applications
Signal Reconstruction of I and Q
Transmit Signals
Digital Signal Processing
Arbitrary Waveform Generation (AWG)
Imaging Applications
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
MAX5186
MAX5189
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,
Simultaneous-Output DACs
MAX5186/MAX5189
ABSOLUTE MAXIMUM RATINGS
AV
DD
, DV
DD
to AGND, DGND ................................ -0.3V to +6V
Digital Input to DGND.............................................. -0.3V to +6V
OUT1P, OUT1N, OUT2P, OUT2N, CREF1,
CREF2 to AGND .................................................. -0.3V to +6V
REF0, REFR to AGND.............................................. -0.3V to +6V
AGND to DGND................................................... -0.3V to +0.3V
AV
DD
to DV
DD
.................................................................... ±3.3V
Maximum Current into Any Pin........................................... 50mA
Continuous Power Dissipation (T
A
= +70°C)
28-Pin QSOP (derate 10.8mW/°C above +70°C) .... 860.2mW
Operating Temperature Ranges
MAX518_BEEI................................................. -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, 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.
≥
+25°C guaranteed by production test, < +25°C guaranteed by design and characterization. Typical values are at
T
A
= +25°C.)
PARAMETER
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain 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
Phase Mismatch Between DAC
Outputs
f
OUT
= 2.2MHz, T
A
= +25°C
f
OUT
= 2.2MHz
SFDR
THD
SNR
f
CLK
= 40MHz
f
CLK
= 40MHz
f
CLK
= 40MHz
f
OUT
= 2.2MHz
All 0s to all 1s
f
OUT
= 550kHz
f
OUT
= 2.2MHz, T
A
= +25°C
f
OUT
= 550kHz
f
OUT
= 2.2MHz, T
A
= +25°C
f
OUT
= 550kHz
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
±0.15
±1
-60
ns
pV-s
dBc
dBc
dB
dB
pV-s
pA/√Hz
% FSR
degrees
SYMBOL
N
INL
DNL
Guaranteed monotonic
MAX5186
MAX5189
(Note 1)
CONDITIONS
MIN
8
-1
-1
-1
-4
-20
±4
±0.25
±0.25
+1
+1
+1
+4
+20
TYP
MAX
UNITS
Bits
LSB
LSB
LSB
LSB
2
_______________________________________________________________________________________
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-Output DACs
MAX5186/MAX5189
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= 3V, 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.
≥
+25°C guaranteed by production test, < +25°C guaranteed by design and characterization. Typical values are at
T
A
= +25°C.)
PARAMETER
ANALOG OUTPUT
Differential Full-Scale Output
Voltage
Voltage Compliance Range
Output Leakage Current
Full-Scale Output Current
DAC External Output Resistor
Load
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 Voltage High
Digital Input Voltage Low
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
t
DS1
t
DS2
t
DH1
t
DH2
10
10
0
0
ns
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
IAV
DD
DV
DD
IDV
DD
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
0.5
2.7
2.7
3.3
5.0
3.3
5.0
1.5
1
V
mA
V
mA
mA
µA
V
REFO
TCV
REFO
I
REFO
1.12
1.2
50
10
0.5
8
1.28
V
ppm/°C
µA
mV/V
mA/mA
I
FS
R
L
DACEN = 0, MAX5186 only
MAX5186 only
MAX5186 only
V
FS
-0.3
-1
0.5
1
400
400
0.8
1
1.5
mV
V
µA
mA
Ω
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
_______________________________________________________________________________________
3
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-Output DACs
MAX5186/MAX5189
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= 3V, 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.
≥
+25°C guaranteed by production test, < +25°C guaranteed by design and characterization. Typical values are at
T
A
= +25°C.)
PARAMETER
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
SYMBOL
CONDITIONS
MIN
TYP
5
5
0.5
50
MAX
UNITS
ns
ns
µs
µs
ns
ns
ns
Note 1:
Excludes reference and reference resistor (MAX5189) tolerance.
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. DIGITAL INPUT CODE
MAX5186/9toc01
DIFFERENTIAL NONLINEARITY
vs. DIGITAL INPUT CODE
MAX5186/9toc02
ANALOG SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5186/9toc03
0.150
0.125
0.100
0.100
0.075
0.050
DNL (LSB)
0.025
0
-0.025
-0.050
-0.075
2.55
2.53
SUPPLY CURRENT (mA)
MAX5186
MAX5189
0.075
INL (LSB)
0.050
0.025
0
-0.025
-0.050
0
32
64
96
128 160 192 224 256
DIGITAL INPUT CODE
2.51
2.49
2.47
2.45
0
32
64
96
128 160 192 224 256
2.5
3.0
3.5
4.0
4.5
5.0
5.5
DIGITAL INPUT CODE
SUPPLY VOLTAGE (V)
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
MAX5186/9toc04
DIGITAL SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5186/9toc05
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
MAX5186/9toc06
4.0
ANALOG SUPPLY CURRENT (mA)
10
DIGITAL SUPPLY CURRENT (mA)
5
DIGITAL SUPPLY CURRENT (mA)
MAX5189
4
3.5
8
MAX5186
MAX5189
4
3.0
MAX5189
2.5
MAX5186
6
3
MAX5186
2
2.0
2
1
1.5
-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)
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-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.)
MAX5186/MAX5189
STANDBY CURRENT vs. SUPPLY VOLTAGE
MAX5186/9toc07
STANDBY CURRENT vs. TEMPERATURE
MAX5186/9toc08
SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
0.75
SHUITDOWN CURRENT (µA)
0.70
MAX5189
0.65
0.60
0.55
0.50
0.45
MAX5186
MAX5186/9toc09
610
600
590
STANDBY CURRENT (µA)
MAX5186
580
570
MAX5189
560
550
540
0.80
STANDBY CURRENT (µA)
600
MAX5186
590
580
MAX5189
570
560
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
-40
-15
10
35
60
85
2.5
3.0
3.5
4.0
4.5
5.0
5.5
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
INTERNAL REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX5186/9toc10
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX5186/9toc11
OUTPUT CURRENT
vs. REFERENCE CURRENT
MAX5186/9toc12
1.28
1.28
4
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE (V)
1.26
MAX5189
MAX5186
1.24
1.26
MAX5189
1.25
MAX5186
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
MAX5186toc13
DYNAMIC RESPONSE FALL TIME
MAX5186/9toc14
SETTLING TIME
MAX5186/9toc15
OUT_P
150mV/
div
OUT_P
150mV/
div
OUT_N
100mV/
div
OUT_N
150mV/
div
OUT_N
150mV/
div
OUT_P
100mV/
div
50ns/div
50ns/div
12.5ns/div
_______________________________________________________________________________________
5
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