X9470
ABSOLUTE MAXIMUM RATINGS*
Voltage on V+ (referenced to AGND) ...................... 7V
Voltage on VCC (reference to VSS) ........................ 7V
Voltage on all RH, RW, RL pins
(reference to AGND): ........................................... 7V
Voltage on Vsense+ or
Vsense- (reference to AGRND).......................... 30V
Voltage on SDA, CS, SCL, SHDN
(reference to AGND) ............... -0.3V to (Vcc + 0.3V)
Current into Output Pin: .......................................... ± 5mA
*COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation
of the device at these or any other conditions above
those listed in the operational sections of this specifi-
cation is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect
device reliability.
Continuous Power Dissipation: ....................... 500mW
Operating Temperature range:.............. -40 ° C to +85 ° C
Junction Temperature: ..........................................150 ° C
Storage Temperature ........................ -65 ° C to +150 ° C
Lead Temperature (Soldering, 10 seconds): ..... 300 ° C
ELECTRICAL CHARACTERISTICS
INSTRUMENTATION AMPLIFIER
Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; T A = -40°C to +85°C, unless
otherwise noted.)
Limits
Symbol
Parameter
Min. Typ. Max. Units
Test Conditions/Notes
V IN
(10)
Common Mode Input Voltage on
V SENSE+ and V SENSE- pins
20
28
V
Gain 1
Gain 2
Gain from V SENSE to V OUT(2)
Gain from V SENSE to V OUT(2)
20
50
V/V
V/V
Measured with Status
Register bit SR0 = 0
Measured with Status
Register bit SR0 = 1
V RANGE1
V RANGE2
V OS
Av1
Av2
Differential voltage sense range between
V SENSE+ and V SENSE- for gain 1
Differential voltage sense range between
V SENSE+ and V SENSE- for gain 2
Input Offset Voltage
Gain 1 Error
Gain = 20 (4)
Gain 2 Error
Gain = 50 (4)
60
40
0.5
1.5
1.5
90
60
mV
mV
mV
%
%
Gain = 20
Gain = 50
V SENSE = 40mV to 90mV
T A = 25°C
V SENSE = 60mV to 90mV
T A = 25 to 85°C, Gain = 20
V SENSE = 40mV to 60mV
T A = 25 to 85°C, Gain = 50
Avt1
Total Error, Gain 1
Gain = 20 (5)
-6
1.5
6
%
V SENSE = 60mV to 90mV
T A = 85°C, Gain = 20
10
%
V SENSE = 60mV to 90mV
T A = 25 to 85°C, Gain = 20
Avt2
Total Error, Gain 2
Gain = 50 (5)
-6
1.5
6
%
V SENSE = 40mV to 60mV
T A = 85°C, Gain = 50
10
%
V SENSE = 40mV to 60mV
T A = 25 to 85°C, Gain = 50
At
SR (10)
Long Term Drift
Slew Rate of Instrumentation Amp
2
0.2
%
V/μS
Avt1 or Avt2
? V SENSE = 20mV step,
Cout = 10pF Measured at
V OUT(1,3)
3
FN8204.0
March 8, 2005
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