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MAX5426 Datasheet Preview

MAX5426 Datasheet

Precision Resistor Network

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19-2318; Rev 0; 1/02
Precision Resistor Network for
Programmable Instrumentation Amplifiers
General Description
The MAX5426 is a precision resistor network optimized
for use with programmable instrumentation amplifiers.
The MAX5426 operates from dual ±5V to ±15V supplies
and consumes less than 40µA of supply current.
Designed to be used in the traditional three op amp
instrumentation amplifier topology, this device provides
noninverting gains of 1, 2, 4, and 8 that are accurate to
0.025% (A-grade), 0.09% (B-grade), or 0.5%
(C-grade) over the extended temperature range (-40°C
to +85°C). The MAX5426 is available in the 6.4mm
5mm 14-pin TSSOP package.
Applications
General-Purpose Programmable Instrumentation
Amplifiers
Gain Control in RF Power Amplifiers
Precision Dual Attenuator
Features
o Differential Gains: AV = 1, 2, 4, 8
o Gain Accurate to 0.025%, 0.09%, or 0.5%
o Dual Supply ±5V to ±15V Operation
o Low 36µA Supply Current
o Simple CMOS/TTL Logic Compatible 2-Wire
Parallel Interface
o Space-Saving 14-Pin TSSOP Package
(6.4mm 5mm)
o OFFSET Pin Available to Offset the Output of the
Differential Amplifier
Ordering Information
PART
MAX5426AEUD
MAX5426BEUD
MAX5426CEUD
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
14 TSSOP
14 TSSOP
14 TSSOP
GAIN
0.025%
0.09%
0.5%
Pin Configuration and Functional Diagram appear at
end of data sheet.
VIN-
VDD
D0
D1
CM
FB1 OUT1
MAX5426
VSS GND
VIN+
FB2
OUT2
Typical Operating Circuit
INDIF-
OUT
INDIF+
OFFSET
VOUT
________________________________________________________________ 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.
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Maxim Integrated Products
Maxim Integrated Products

MAX5426 Datasheet Preview

MAX5426 Datasheet

Precision Resistor Network

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MAX5426 pdf
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Precision Resistor Network for
Programmable Instrumentation Amplifiers
ABSOLUTE MAXIMUM RATINGS
VDD to GND ............................................................-0.3V to +17V
VSS to GND.............................................................-17V to +0.3V
D0, D1 to GND ...........................................-0.3V to (VDD + 0.2V)
D0, D1 to GND (VDD > +6V) .................................-0.3V to +6.0V
All Other Pins to GND ......................(VSS - 0.3V) to (VDD + 0.2V)
Maximum Current Into VDD, VSS, D1, D0 .........................±50mA
Maximum Current from OUT1 to CM or OUT2 ..............±0.72mA
Maximum Current from OUT1 to INDIF- or OUT............±0.72mA
Maximum Current from OUT2 to INDIF+ or OFFSET.....±0.72mA
Continuous Power Dissipation (TA = +70°C)
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ..........727mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°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
(VDD = +15V, VSS = -15V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MAX5426A
Gain Range Accuracy (Notes 1, 2)
MAX5426B
MAX5426C
Capacitance at Analog Pins
CANALOG
Gain = 1
Differential CMRR (Notes 1, 2)
Gain = 2
Gain = 4
Gain = 8
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Leakage Current
EQUIVALENT RESISTANCES
VIH
VIL
ILKG
D1 = D0 = 0 or logic high
Resistance Between OUT1 and
OUT2
ROUT1, ROUT2
MIN TYP MAX
0.004 0.025
0.025 0.090
0.080 0.500
5
79
85
91
97
2.4
0.8
10
56
Resistance Between OUT1 and
INDIF-
ROUT1, RINDIF-
26
Resistance Between INDIF- and
OUT
RINDIF-, ROUT
26
Resistance Between OUT2 and
INDIF+
ROUT2, RINDIF+
26
Resistance Between INDIF+ and
OFFSET
Resistance Between OUT1 and
FB1
RINDIF+,
ROFFSET
ROUT1, RFB1
Gain = 1
Gain = 2
Gain = 4
Gain = 8
26
0
15
22
26
UNITS
%
pF
dB
V
V
µA
k
k
k
k
k
k
2 _______________________________________________________________________________________
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Part Number MAX5426
Description Precision Resistor Network
Maker Maxim Integrated Products
Total Page 9 Pages
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