MAX7841 Fast Delivery |IC PHOENIX CO.,LIMITED

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MAX7841
Octal, 14-Bit Voltage-Output DAC with Parallel Interface
General Description
The MX7841 contains eight 14-bit, voltage-output digi-
tal-to-analog converters (DACs). On-chip precision out-
put amplifiers provide the voltage outputs. The device
operates from ±15V supplies. Its bipolar output voltage
swing ranges from (VSS+ 2.5V) to (VDD- 2.5V) and is
achieved with no external components. The MX7841
has three pairs of differential reference inputs; two of
these pairs are connected to two DACs each, and a
third pair is connected to four DACs. The references
are independently controlled, providing different full-
scale output voltages to the respective DACs.
The MX7841 features double-buffered interface logic
with a 14-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 (LDAC) transfers data from the input latch to
the DAC latch. The LDACinput controls all DACs;
therefore, all DACs can be updated simultaneously by
asserting LDAC.
An asynchronous CLRinput sets the output of all eight
DACs to the respective DUTGND input of the op amp.
Note that CLRis a CMOS input, which is powered by
VDD. All other logic inputs are TTL/CMOS compatible.
The MX7841 is pin-for-pin compatible with AD7841.
Applications
Automatic Test Equipment (ATE)
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
Minimum Component Count Analog Systems
Digital Offset/Gain Adjustment
SONET Applications
FeaturesFull 14-Bit Performance Without AdjustmentsEight DACs in a Single PackageBuffered Voltage OutputsUnipolar or Bipolar Voltage Swing of (VSS+ 2.5V)
to (VDD- 2.5V)31µs Output Settling TimeLow Power Consumption: 8mA(typ)Small 44-Pin MQFP PackageDouble-Buffered Digital InputsAsynchronous Load Updates All DACs
SimultaneouslyAsynchronous CLRForces All DACs to
DUTGND_ _ Potential
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface
19-2953; Rev 0; 7/03
Pin Configuration
Ordering Information
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface
ABSOLUTE MAXIMUM RATINGS
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.
VDDto GND ...........................................................-0.3V to +17V
VSSto GND ...........................................................-17V to +0.3V
VCCto GND ............................................................-0.3V to +6V
A_, DB_, WR, CS, LDAC, CLRto GND.....+0.3V to (VCC+ 0.3V)
REF_ _ _ _+, REF_ _ _ _-,
DUTGND_ _.................................(VSS- 0.3V) to (VDD+ 0.3V)
OUT_ ..........................................................................VDDto VSS
Maximum Current into REF_ _ _ _ _, DUTGND_ _ ...........±10mA
Maximum Current into Any Signal Pin..............................±50mA
OUT_ Short-Circuit Duration to VDD, VSS, and GND................1s
Continuous Power Dissipation (TA= +70°C)
44-Pin MQFP (derate 11.1mW/°C above +70°C).........870mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, RL= 5kΩ,= 50pF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface
ELECTRICAL CHARACTERISTICS (continued)
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, RL= 5kΩ,= 50pF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
INTERFACE TIMING CHARACTERISTICS
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, Figure 2a,= TMINto TMAX, unless otherwise noted.)
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface
Note 1:Guaranteed by design. Not production tested.
Note 2:All digital inputs (DB_, A_, WR, CS, LDAC, and CLR) at GND or VCCpotential.
Note 3:All digital inputs (DB_, A_, WR, CS, LDAC, and CLR) at +0.8V or +2.4V.
Note 4:All digital inputs (DB0 to DB13) transition from GND to VCCwith WR= VCC
DYNAMIC CHARACTERISTICS
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, RL= 5kΩ,= 50pF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
Typical Operating Characteristics
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, TA=
+25°C, unless otherwise noted.)
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface10M
-1510k100k
REFERENCE INPUT FREQUENCY RESPONSE
MX7841 toc07
FREQUENCY (Hz)
AMPLITUDE (dB)
SETTLING TIME
vs. CAPACITIVE LOAD
MX7841 toc08
CAPACITIVE LOAD (pF)
SETTLING TIME (
10,0001000100
100100,000
LARGE-SIGNAL STEP RESPONSE
MX7841 toc09
10µs/div
LDAC
5V/div
OUT_
5V/div
POSITIVE SETTLING TIME
MX7841 toc10
10µs/div
OUT_
1mV/div
LDAC
5V/div
NEGATIVE SETTLING TIME
MX7841 toc11
10µs/div
OUT_
1mV/div
LDAC
5V/div
1001001k10k
NOISE VOLTAGE DENSITY
vs. FREQUENCY
MX7841 toc12
FREQUENCY (Hz)
NOISE VOLTAGE DENSITY (nV/
Hz)
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
MX7841 toc06
TEMPERATURE (°C)
DIGITAL SUPPLY CURRENT, I653550-10520-25
Typical Operating Characteristics (continued)
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, TA=
+25°C, unless otherwise noted.)
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface
ZERO-SCALE ERROR
vs. VREF (VREF+ - VREF-)
MX7841 toc17
VREF (V)
ZSE (LSB)624
OUT
LDAC
5V/div
5mV/div
MAJOR CARRY GLITCH IMPULSE
(0xFFFF–0x10000)
MX7841 toc13
2µs/div
MX7841 toc14
2µs/div
OUT
LDAC
MAJOR CARRY GLITCH IMPULSE
(0x1000–0xFFF)
5V/div
5mV/div
GAIN ERROR vs. VREF
(VREF+ - VREF-)
MX7841 toc15
VREF (V)
GAIN ERROR (LSB)642
DNL (MAX, MIN)
vs. VREF (VREF+ - VREF-)
MX7841 toc16
VREF (V)
DNL (MAX, MIN) (LSB)624
FULL-SCALE ERROR
vs. VREF (VREF+ - VREF-)
MX7841 toc18
VREF (V)
FSE (LSB)624
SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
MX7841 toc20
TEMPERATURE (°C)
SHORT CIRCUIT CURRENT (mA)
Typical Operating Characteristics (continued)
(VDD= +15V ±10%, VSS= -15V ±10%, VCC= +5V ±5%, VGND= VDUTGND_ _= 0, VREF_ _ _ _+ = +5V, VREF_ _ _ _- = -5V, TA=
+25°C, unless otherwise noted.)
MX7841
Octal, 14-Bit Voltage-Output DAC
with Parallel Interface
Pin Description

Partno	Mfg	Dc	Qty	Available	Descript
MAX7841	MAXIM	N/a	2	avai	Octal, 14-Bit Voltage-Output DAC with Parallel Interface