MAX5426 查看數據表（PDF） - Maxim Integrated
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MAX5426 Datasheet PDF : 9 Pages
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Precision Resistor Network for
Programmable Instrumentation Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +15V, VSS = -15V, GND = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Resistance Between FB1 and FB2
(Note 3)
Resistance Between OUT2 and
FB2
Input Impedance at FB1
Input Impedance at FB2
Input Impedance at OUT1
(Note 4)
Input Impedance at OUT2
(Note 4)
SYMBOL
RFB1, RFB2
ROUT2, RFB2
ZFB1
ZFB2
ZOUT1
ZOUT2
Gain = 2
Gain = 4
Gain = 8
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 1
Gain = 2
Gain = 4
Gain = 8
Gain = 1
Gain = 2
Gain = 4
Gain = 8
CONDITIONS
Input Impedance at INDIF+
(Note 4)
ZINDIF+
Input Impedance at INDIF-
(Note 4)
ZINDIF-
Input Impedance at OUT (Note 4)
Input Impedance at OFFSET
(Note 4)
ZOUT
ZOFFSET
POWER REQUIREMENTS
Positive Power-Supply Voltage
Negative Power-Supply Voltage
Positive Supply Current
Negative Supply Current
TIMING REQUIREMENTS
Switching Time (Note 5)
VDD
VSS
D1 = D0 = 0
IDD
D1 = D0 = 5V
ISS
tSWITCHING (Figure 3)
MIN TYP MAX UNITS
29
15
kΩ
7
0
15
kΩ
22
26
0
kΩ
0
kΩ
0
9.5
kΩ
12
13
0
9.5
kΩ
12
13
0
kΩ
0
kΩ
26
kΩ
26
kΩ
4.75
15.75
V
-15.75
-4.75
V
10
µA
36
80
0.01
10
µA
60
ns
Note 1: Total error when configured as instrumentation amplifier. Assumes ideal op amps.
Note 2: Each stage (input stage and output stage) is tested for accuracy separately and combined to give the total gain accuracy.
The input stage is tested as follows: OUT1 = 10V, OUT2 = 0. Output stage is tested as follows OUT1 = 10V, OUT2 = 0 and
OUT2 = 10V, OFFSET = 0.
Note 3: Gain of 1 configuration is open circuit (infinite impedance).
Note 4: Equivalent load at each pin is calculated according to instrumentation amplifier configuration and assumes ideal op amps.
Note 5: See Timing Diagram.
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