Datasheet
ELECTRICAL CHARACTERISTICS: V
S
= AV
DD
= DV
DD
= +5V
PGA112 , , PGA113
PGA116 , PGA117
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............................................................................................................................................ SBOS424B – MARCH 2008 – REVISED SEPTEMBER 2008
Boldface limits apply over the specified temperature range, T
A
= – 40 ° C to +125 ° C.
At T
A
= +25 ° C, R
L
= 10k Ω //C
L
= 100pF connected to DV
DD
/2, and V
REF
= GND, unless otherwise noted.
PGA112, PGA113, PGA116, PGA117
PARAMETER CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
Input Offset Voltage V
OS
AV
DD
= DV
DD
= +5V, V
REF
= V
IN
= AV
DD
/2, V
CM
= 2.5V ± 25 ± 100 µ V
AV
DD
= DV
DD
= +5V, V
REF
= V
IN
= AV
DD
/2, V
CM
= 4.5V ± 75 ± 325 µ V
vs Temperature, – 40 ° C to +125 ° C dV
OS
/dT AV
DD
= DV
DD
= +5V, V
CM
= 2.5V 0.35 1.2 µ V/ ° C
vs Temperature, – 40 ° C to +85 ° C AV
DD
= DV
DD
= +5V, V
CM
= 2.5V 0.15 0.9 µ V/ ° C
vs Temperature, – 40 ° C to +125 ° C AV
DD
= DV
DD
= +5V, V
CM
= 4.5V 0.6 1.8 µ V/ ° C
vs Temperature, – 40 ° C to +85 ° C AV
DD
= DV
DD
= +5V, V
CM
= 4.5V 0.3 1.3 µ V/ ° C
AV
DD
= DV
DD
= +2.2V to +5.5V, V
CM
= 0.5V,
vs Power Supply PSRR 5 20 µ V/V
V
REF
= V
IN
= AV
DD
/2
AV
DD
= DV
DD
= +2.2V to +5.5V, V
CM
= 0.5V,
Over Temperature, – 40 ° C to +125 ° C 5 40 µ V/V
V
REF
= V
IN
= AV
DD
/2
INPUT ON-CHANNEL CURRENT
Input On-Channel Current (Ch0, Ch1) I
IN
V
REF
= V
IN
= AV
DD
/2 ± 1.5 ± 5 nA
Over Temperature, – 40 ° C to +125 ° C V
REF
= V
IN
= AV
DD
/2 See Typical Characteristics nA
INPUT VOLTAGE RANGE
Input Voltage Range
(1)
I
VR
GND – 0.1 AV
DD
+ 0.1 V
Overvoltage Input Range No Output Phase Reversal
(2)
GND – 0.3 AV
DD
+ 0.3 V
INPUT IMPEDANCE (Channel On)
(3)
Channel Input Capacitance C
CH
2 pF
Channel Switch Resistance R
SW
150 Ω
Amplifier Input Capacitance C
AMP
3 pF
Amplifier Input Resistance R
AMP
Input Resistance to GND 10 G Ω
V
CAL
/CH0 R
IN
CAL1 or CAL2 Selected 100 k Ω
GAIN SELECTIONS
Nominal Gains Binary gains: 1, 2, 4, 8, 16, 32, 64, 128 1 128
Scope gains: 1, 2, 5, 10, 20, 50, 100, 200 1 200
DC Gain Error G = 1 V
OUT
= GND + 85mV to DV
DD
– 85mV 0.006 0.1 %
1 < G ≤ 32 V
OUT
= GND + 85mV to DV
DD
– 85mV 0.1 %
G ≥ 50 V
OUT
= GND + 85mV to DV
DD
– 85mV 0.3 %
DC Gain Drift G = 1 V
OUT
= GND + 85mV to DV
DD
– 85mV 0.5 ppm/ ° C
1 < G ≤ 32 V
OUT
= GND + 85mV to DV
DD
– 85mV 2 ppm/ ° C
G ≥ 50 V
OUT
= GND + 85mV to DV
DD
– 85mV 6 ppm/ ° C
Op Amp + Input = 0.9V
CAL
,
CAL2 DC Gain Error
(4)
0.02 %
V
REF
= V
CAL
= AV
DD
/2, G = 1
Op Amp + Input = 0.9V
CAL
,
CAL2 DC Gain Drift
(4)
2 ppm/ ° C
V
REF
= V
CAL
= AV
DD
/2, G = 1
Op Amp + Input = 0.1V
CAL
,
CAL3 DC Gain Error
(4)
0.02 %
V
REF
= V
CAL
= AV
DD
/2, G = 1
Op Amp + Input = 0.1V
CAL
,
CAL3 DC Gain Drift
(4)
2 ppm/ ° C
V
REF
= V
CAL
= AV
DD
/2, G = 1
INPUT IMPEDANCE (Channel Off)
(3)
Input Impedance C
CH
See Figure 1 2 pF
INPUT OFF-CHANNEL CURRENT
V
REF
= GND, V
OFF-CHANNEL
= AV
DD
/2,
Input Off-Channel Current (Ch0, Ch1)
(5)
I
LKG
± 0.05 ± 1 nA
V
ON-CHANNEL
= AV
DD
/2 – 0.1V
V
REF
= GND, V
OFF-CHANNEL
= AV
DD
/2,
Over Temperature, – 40 ° C to +125 ° C See Typical Characteristics
V
ON-CHANNEL
= AV
DD
/2 – 0.1V
Channel-to-Channel Crosstalk 130 dB
(1) Gain error is a function of the input voltage. Gain error outside of the range (GND + 85mV ≤ V
OUT
≤ DV
DD
– 85mV) increases to 0.5%
(typical).
(2) Input voltages beyond this range must be current limited to < |10mA| through the input protection diodes on each channel to prevent
permanent destruction of the device.
(3) See Figure 1 .
(4) Total V
OUT
error must be computed using input offset voltage error multiplied by gain. Includes op amp G = 1 error.
(5) Maximum specification limitation limited by final test time and capability.
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