MAX5191 MAXIM [Maxim Integrated Products], MAX5191 Datasheet

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MAX5191

Manufacturer Part Number
MAX5191
Description
Dual, 8-Bit, 40MHz, Current/Voltage,Alternate-Phase Output DACs
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
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.
19-1580; Rev 2; 12/01
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.
Signal Reconstruction Applications
Digital Signal Processing
Arbitrary Waveform Generators
Imaging Applications
________________________________________________________________ Maxim Integrated Products
General Description
Dual, 8-Bit, 40MHz, Current/Voltage,
Applications
Alternate-Phase Output DACs
o +2.7V to +3.3V Single-Supply Operation
o Wide Spurious-Free Dynamic Range: 70dB
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
MAX5188BEEI
MAX5191BEEI
at f
TOP VIEW
PART
OUT
= 2.2MHz
DACEN
OUT1N
OUT1P
CREF1
DGND
DGND
AGND
AV
N.C.
CLK
REN
PD
CS
D0
DD
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Ordering Information
MAX5188
MAX5191
QSOP
Pin Configuration
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PIN-PACKAGE
28 QSOP
28 QSOP
CREF2
OUT2P
OUT2N
REFO
REFR
DGND
DV
D7
D6
D5
D4
D3
D2
D1
DD
Features
1

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MAX5191 Summary of contents

Page 1

... 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 ...

Page 2

... DAC External Output Resistor Load 2 ________________________________________________________________________________________ Continuous Power Dissipation (T 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 = 40MHz 1mA, 400Ω differential output, C CLK FS = +25° ...

Page 3

... DACEN Rise Time to V OUT PD Fall Time to V OUT Clock Period t CLK Clock High Time t Clock Low Time t Note 1: Excludes reference and reference resistor (MAX5191) tolerance. _______________________________________________________________________________________ Alternate-Phase Output DACs = 40MHz 1mA, 400Ω differential output, C CLK FS = +25°C.) A CONDITIONS REF ...

Page 4

... MAX5188 560 550 -40 - TEMPERATURE (°C) = +25°C, unless otherwise noted.) A ANALOG SUPPLY CURRENT vs. SUPPLY VOLTAGE 3.00 MAX5191 2.75 2.50 MAX5188 2.25 2.00 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) DIGITAL SUPPLY CURRENT vs. TEMPERATURE 4.00 MAX5188 3.75 MAX5191 3.50 3.25 3.00 -40 - TEMPERATURE (°C) SHUTDOWN CURRENT vs. SUPPLY VOLTAGE 3.8 3.7 MAX5188 3.6 MAX5191 3.5 3.4 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) ...

Page 5

... SETTLING TIME OUT_N 100mV/div OUT_P 100mV/div 12.5ns/div _______________________________________________________________________________________ Alternate-Phase Output DACs Typical Operating Characteristics (continued) = 1mA INTERNAL REFERENCE VOLTAGE vs. TEMPERATURE 1.28 1.27 1.26 MAX5188 1.25 MAX5191 1.24 1.23 -40 - 5.5 TEMPERATURE (°C) DYNAMIC RESPONSE FALL TIME OUT_P 150mV/div OUT_N 150mV/div 50ns/div FFT PLOT, DAC1 40MHz ...

Page 6

Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs ( +3V, AGND = DGND = 0, 400Ω differential output SPURIOUS-FREE DYNAMIC RANGE vs. CLOCK FREQUENCY 100 ...

Page 7

... Reference Output 26 OUT2N Negative Analog Output, DAC2. Current output for the MAX5188; voltage output for the MAX5191. 27 OUT2P Positive Analog Output, DAC2. Current output for the MAX5188; voltage output for the MAX5191. 28 CREF2 Reference Bias Bypass, DAC2 _______________________________________________________________________________________ Alternate-Phase Output DACs FUNCTION (X = don’ ...

Page 8

... DACs. Inside the MAX5191, each output current (DAC1 and DAC2) is converted to an output voltage (V with two internal, ground-referenced, 400Ω load resis- tors. Using the internal +1.2V reference voltage, the inte- ...

Page 9

... REFERENCE CURRENT SET RESISTOR INTERNAL TO MAX5191 ONLY. USE EXTERNAL R must be pulled high with PD held at DGND. The MAX5188/MAX5191 typically require 50µs to wake up and allow both the outputs and the reference to settle. For lowest power consumption, the MAX5188/MAX5191 provide a power-down mode in which the reference, control amplifier, and current array are inactive and the DAC’ ...

Page 10

... Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs AV DD EXTERNAL +1.2V REFERENCE MAX6520 AGND R SET AGND Figure 3. MAX5188/MAX5191 Using an External Reference CLK D0–D7 DAC1 DAC2 t t DS1 DS2 OUT1 OUT2 Figure 4. Timing Diagram 10 ______________________________________________________________________________________ DV DD 10µF REN +1.2V BANDGAP REFERENCE REFO REFR ...

Page 11

... DAC2 on the falling edge of the clock. Both outputs are updated on alternate phases of the clock. The MAX5188 outputs are designed to supply 1mA full- scale output currents into 400Ω loads in parallel with a capacitive load of 5pF. The MAX5191 features integrat ...

Page 12

... Since the MAX5188/ Settling Time MAX5191 have separate analog and digital ground buses (AGND and DGND, respectively), the PC board should also have separate analog and digital ground sections with only one point connecting the two. Digital ...

Page 13

... DD CREF2 OUT1P 400Ω* MAX5188 MAX5191 OUT1N 400Ω* OUT2P 400Ω* OUT2N 400Ω* REN AGND *400Ω RESISTORS INTERNAL TO MAX5191 ONLY. 402Ω +5V 402Ω MAX4108 -5V 402Ω 402Ω 402Ω +5V 402Ω MAX4108 -5V 402Ω 402Ω ...

Page 14

Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and ...

Page 15

... This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components. ...

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