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X9470
VREF DCP CIRCUIT BLOCK
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
R TOTAL Temperature
Coefficient (10)
±300
ppm/°C
Ratiometric Temperature
Coefficient (10)
-20
+20
ppm/°C
C IN
(10)
Potentiometer Capacitances on RH REF
and RL REF
10
pF
BIAS ADJUSTMENT DCP CIRCUIT BLOCK
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
R TOTAL
Parameter
End to End Resistance Variation
Min.
8
Typ.
10
Max.
12
Units
k ?
Test Conditions/Notes
with ±20% variation
Number Taps or Positions
256
V RH
V RL
V RW
Voltage at the RH BIAS Terminal Voltage
Voltage at the RL BIAS Terminal Voltage
Voltage at the RW BIAS Terminal Voltage
Rating (10)
Power
AGND
AGND
AGND
2.5
V +
V +
V +
V
V
V
mW
AGND = 0V
AGND = 0V
AGND = 0V
R TOTAL = 10 K ?
Resolution (10)
0.4
%
Absolute Linearity (6)
Relative Linearity (7)
R TOTAL Temperature
Coefficient (10)
-1.0
-1.0
±300
+1.0
+1.0
MI (8)
MI (8)
ppm/°C
Ratiometric Temperature
Coefficient (10)
-50
50
ppm/°C
C IN
(10)
Potentiometer Capacitances on RH BIAS
and RL BIAS
10
pF
VBIAS OUTPUT VOLTAGE FOLLOWER
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 OS
Input Offset Voltage
10
mV
V OSDRIFT(10)
SR
Offset Voltage Temperature
Coefficient
Output Slew Rate on V BIAS
10
0.5
μV/°C
V/ μ S
T A = -40 to +85°C
R L = 10k ? , 1nF, ? V BIAS =
20mV
V BIAS
T S(10)
t SHDN
PSRR
Voltage Output Swing
Settling Time
Time for SHDN pin (delay) valid
Power Supply Rejection Ratio
1.5
45
2
0.1
55
V CC - 0.5
1.0
V
μs
μs
d B
I OUT = ±10mA
Final value ±1%, R L = 10k ? ,
1nF, ? V BIAS = 20mV
VCC supply V CC = 4.75 to
5.25V
5
FN8204.0
March 8, 2005
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