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CA5420AMZ96

P1-P3P4-P6P7-P9
CA5420A
4
FN1925.9
February 11, 2015
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Sink Current I
SINK
V
O
= 5V 1.2 2.1 mA
Output Voltage V
OM
+R
L
= 4.85 4.94 V
V
OM
- 0.13 0.15 V
V
OM
+R
L
= 10kΩ 4.7 4.9 V
V
OM
-0.120.15V
V
OM
+R
L
= 2kΩ 3.5 4.6 V
V
OM
- 0.1 0.15 V
Supply Current I
SUPPLY
V
O
= 0V 400 550 µA
V
O
= 2.5V 430 600 µA
Electrical Specifications T
A
= +25°C, V+ = 5V, V- = 0, Unless Otherwise Specified. (Continued)
PARAMETER SYMBOL
TEST
CONDITIONS
CA5420A
UNITS
MIN
(Note 6
)TYP
MAX
(Note 6)
Electrical Specifications T
A
= -55°C to +125°C, V+ = 5V, V- = 0, Unless Otherwise Specified. Boldface limits apply across the operating
temperature range, -55°C to +125°C.
PARAMETER SYMBOL
TEST
CONDITIONS
CA5420A
UNITS
MIN
(Note 6
)TYP
MAX
(Note 6)
Input Offset Voltage V
IO
V
O
= 2.5V 2 10 mV
Input Offset Current I
IO
V
O
= 2.5V 1.5 3 nA
Up to T
A
= +85°C 210 pA
Input Current I
I
V
O
= 2.5V 2 5 nA
Up to T
A
= +85°C 10 15 pA
Common Mode Rejection Ratio CMRR V
CM
= 0 to 3.7V,
V
O
= 2.5V
70 80 dB
Common Mode Input Voltage Range V
lCR
+V
O
= 2.5V 3.7 4V
V
lCR
- -0.3 0 V
Power Supply Rejection Ratio PSRR V+ = 1V;
V- = 1V
70 83 dB
Large Signal Voltage Gain A
OL
V
O
= 0.5 to 4V R
L
= 65 75 dB
V
O
= 0.7 to 4V R
L
= 10kΩ 80 87 dB
V
O
= 0.7 to 2.5V R
L
= 2kΩ 70 80 dB
Source Current I
SOURCE
V
O
= 0V 1 2.7 mA
Sink Current I
SINK
V
O
= 5V 1 2.1 mA
Output Voltage V
OM
+R
L
= 4.8 4.9 V
V
OM
-0.160.2 V
V
OM
+R
L
= 10kΩ 4.7 4.9 V
V
OM
-0.150.2 V
V
OM
+R
L
= 2kΩ 3 4V
V
OM
-0.140.2 V
Supply Current I
SUPPLY
V
O
= 0V 430 600 µA
V
O
= 2.5V 480 650 µA
CA5420A
5
FN1925.9
February 11, 2015
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Electrical Specifications For Equipment Design at V
SUPPLY
= ±1V, T
A
= +25°C, Unless Otherwise Specified.
PARAMETER SYMBOL
TEST
CONDITIONS
CA5420A
UNITS
MIN
(Note 6
)TYP
MAX
(Note 6)
Input Offset Voltage V
IO
25 mV
Input Offset Current I
IO
0.01 4 pA
Input Current I
I
0.02 5 pA
Large Signal Voltage Gain A
OL
R
L
= 10kΩ 10 100 kV/V
80 100 dB
Common Mode Rejection Ratio CMRR 560 µV/V
50 65 dB
Common Mode Input Voltage Range V
lCR
+0.20.5V
V
lCR
--1-1.3V
Power Supply Rejection Ratio PSRR 32 425 µV/V
70 90 dB
Maximum Output Voltage V
OM
+R
L
= 0.9 0.95 V
V
OM
- -0.85 -0.91 V
Supply Current I
SUPPLY
350 650 µA
Device Dissipation P
D
0.7 1.1 mW
Input Offset Voltage Temperature Drift V
IO
/T 4 µV/°C
Electrical Specifications For Equipment Design at V
SUPPLY
= ±10V, T
A
= +25°C, Unless Otherwise Specified.
PARAMETER SYMBOL
TEST
CONDITIONS
CA5420A
UNITS
MIN
(Note 6
)TYP
MAX
(Note 6)
Input Offset Voltage V
IO
25mV
Input Offset Current I
IO
0.03 4 pA
Input Current I
I
0.05 5 pA
Large Signal Voltage Gain A
OL
R
L
= 10kΩ 20 100 kV/V
80 100 dB
Common Mode Rejection Ratio CMRR 100 320 µV/V
70 80 dB
Common Mode Input Voltage Range V
lCR
+99.3V
V
lCR
--10-10.3V
Power Supply Rejection Ratio PSRR 32 320 µV/V
70 90 dB
Maximum Output Voltage V
OM
+R
L
= 9.7 9.9 V
V
OM
- -9.7 -9.85 V
Supply Current I
SUPPLY
450 1000 µA
Device Dissipation P
D
914mW
Input Offset Voltage
Temperature Drift
V
IO
/T 4 µV/°C
NOTE:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
CA5420A
6
FN1925.9
February 11, 2015
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Typical Applications
Picoammeter Circuit
The exceptionally low input current (typically 0.2pA) makes the
CA5420A highly suited for use in a picoammeter circuit. With only
a single 10GΩ resistor, this circuit covers the range from ±1.5pA.
Higher current ranges are possible with suitable switching
techniques and current scaling resistors. Input transient protection
is provided by the 1MΩ resistor in series with the input. Higher
current ranges require that this resistor be reduced. The 10MΩ
resistor connected to pin 2 of the CA5420A decouples the
potentially high input capacitance often associated with lower
current circuits and reduces the tendency for the circuit to oscillate
under these conditions.
High Input Resistance Voltmeter
Advantage is taken of the high input impedance of the CA5420A in
a high input resistance DC voltmeter. Only two 1.5V “AA” type penlite
batteries power this exceedingly high-input resistance (>1,000,
000M) DC voltmeter. Full-scale deflection is ±500mV, ±150mV,
and ±15mV. Higher voltage ranges are easily added with external
input voltage attenuator networks.
The meter is placed in series with the gain network, thus
eliminating the meter temperature coefficient error term.
Supply current in the standby position with the meter
undeflected is 300µA. At full-scale deflection this current rises to
800µA. Carbon-zinc battery life should be in excess of 1,000
hours.
3
CA5420A
4
500 to 0 to 500
7
+1.5V
5
1
2
-1.5V
10pF
10GΩ
10MΩ1MΩ
BATTERY
RETURNS
10kΩ
6 M
µA
±50pA
±15pA
±5pA
±1.5pA
11kΩ
1.5kΩ
1.5kΩ
1kΩ
430Ω
150Ω
68Ω
1%
-
+
1%
1%
1%
FIGURE 2. PICOAMMETER CIRCUIT
2
CA5420A
4
500 to 0 to 500
7
+1.5V
5
1
3
-1.5V
10MΩ22MΩ
BATTERY
RETURNS
10kΩ
6 M
µA
±500mV
±150mV
±50mV
±15mV
1.1kΩ
1.5kΩ
1.5kΩ
1kΩ
430Ω
150Ω
68Ω
1%
-
+
100pF
1%
1%
1%
FIGURE 3. HIGH INPUT RESISTANCE VOLTMETER
Typical Performance Curves
FIGURE 4. OUTPUT VOLTAGE SWING AND COMMON MODE INPUT
VOLTAGE RANGE vs SUPPLY VOLTAGE
FIGURE 5. OUTPUT VOLTAGE vs LOAD SOURCING CURRENT
R
L
= 100k
10
SUPPLY VOLTAGE (V)
15
T
A
= +25°C
-1.0
510
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
V
O
+
V
ICR
-
V
ICR
+
INPUT AND OUTPUT VOLTAGE EXCURSIONS
FROM THE POSITIVE AND NEGATIVE
SUPPLY VOLTAGE (V)
V
O
-
V+ = 5V
1010.10.001
LOAD (SOURCING) CURRENT (mA)
V- = 0V
T
A
= +25°C
1000
100
10
OUTPUT STAGE TRANSISTOR SATURATION
VOLTAGE, Q19 (mV)
V+ = 20V
V+ = 10V
V+ = 2V
P1-P3P4-P6P7-P9

CA5420AMZ96

Mfr. #:
Buy CA5420AMZ96
Manufacturer:
Renesas / Intersil
Description:
Operational Amplifiers - Op Amps W/ANNEAL OPAMP 1 5MHZ LWBIAS 0 001NA
Lifecycle:
New from this manufacturer.
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