CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. The collector of each transistor of the CA3045 and CA3046 is isolated from the substrate by an integral diode. The substrate (Terminal 13) must
be connected to the most negative point in the external circuit to maintain isolation between transistors and to provide for normal transistor ac-
tion.
2.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER
DC CHARACTERISTICS
T
A
= 25
o
C, characteristics apply for each transistor in CA3045 and CA3046 as specified
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Collector-to-Base Breakdown Voltage
Collector-to-Emitter Breakdown Voltage
Collector-to-Substrate Breakdown Voltage
Emitter-to-Base Breakdown Voltage
Collector Cutoff Current (Figure 1)
Collector Cutoff Current (Figure 2)
Forward Current Transfer Ratio (Static Beta)
(Note 3) (Figure 3)
V
(BR)CBO
V
(BR)CEO
V
(BR)CIO
V
(BR)EBO
I
CBO
I
CEO
h
FE
I
C
= 10µA, I
E
= 0
I
C
= 1mA, I
B
= 0
I
C
= 10µA, I
CI
= 0
I
E
= 10µA, I
C
= 0
V
CB
= 10V, I
E
= 0
V
CE
= 10V, I
B
= 0
V
CE
= 3V
I
C
= 10mA
I
C
= 1mA
I
C
= 10µA
V
CE
= 3V, I
C
= 1mA
20
15
20
5
-
-
-
40
-
-
-
-
-
-
60
24
60
7
0.002
See Fig. 2
100
100
54
0.3
0.715
0.800
0.45
0.45
-
-
-
-
40
0.5
-
-
-
2
-
-
5
5
V
V
V
V
nA
µA
-
-
-
µA
V
V
mV
mV
Input Offset Current for Matched Pair Q
1
and Q
2
.
|I
IO1
- I
IO2
| (Note 3) (Figure 4)
Base-to-Emitter Voltage (Note 3) (Figure 5)
V
BE
V
CE
= 3V
I
E
= 1mA
I
E
= 10mA
Magnitude of Input Offet Voltage for Differential Pair
|V
BE1
- V
BE2
| (Note 3) (Figures 5, 7)
Magnitude of Input Offset Voltage for Isolated
Transistors |V
BE3
- V
BE4
|, |V
BE4
- V
BE5
|,
|V
BE5
- V
BE3
| (Note 3) (Figures 5, 7)
Temperature Coefficient of Base-to-Emitter
Voltage (Figure 6)
Collector-to-Emitter Saturation Voltage
Temperature Coefficient: Magnitude of Input Off-
set Voltage (Figure 7)
DYNAMIC CHARACTERISTICS
Low Frequency Noise Figure (Figure 9)
Low Frequency, Small Signal Equivalent
Circuit Characteristics
Forward Current Transfer Ratio (Figure 11)
Short Circuit Input Impedance (Figure 11)
NF
∆V
BE
--------------
-
∆T
V
CES
∆V
IO
----------------
∆T
V
CE
= 3V, I
C
= 1mA
V
CE
= 3V, I
C
= 1mA
V
CE
= 3V, I
C
= 1mA
-
-1.9
-
mV/
o
C
I
B
= 1mA, I
C
= 10mA
V
CE
= 3V, I
C
= 1mA
-
-
0.23
1.1
-
-
V
µV/
o
C
f = 1kHz, V
CE
= 3V, I
C
= 100µA,
Source Resistance = 1kΩ
-
3.25
-
dB
h
FE
h
IE
f = 1kHz, V
CE
= 3V, I
C
= 1mA
f = 1kHz, V
CE
= 3V, I
C
= 1mA
-
-
110
3.5
-
-
-
kΩ
2
CA3045, CA3046
Electrical Specifications
PARAMETER
Open Circuit Output Impedance (Figure 11)
Open Circuit Reverse Voltage Transfer Ratio
(Figure 11)
Admittance Characteristics
Forward Transfer Admittance (Figure 12)
Input Admittance (Figure 13)
Output Admittance (Figure 14)
Reverse Transfer Admittance (Figure 15)
Gain Bandwidth Product (Figure 16)
Emitter-to-Base Capacitance
Collector-to-Base Capacitance
Collector-to-Substrate Capacitance
NOTE:
3. Actual forcing current is via the emitter for this test.
Y
FE
Y
IE
Y
OE
Y
RE
f
T
C
EB
C
CB
C
CI
f = 1kHz, V
CE
= 3V, I
C
= 1mA
f = 1kHz, V
CE
= 3V, I
C
= 1mA
f = 1kHz, V
CE
= 3V, I
C
= 1mA
f = 1kHz, V
CE
= 3V, I
C
= 1mA
V
CE
= 3V, I
C
= 3mA
V
EB
= 3V, I
E
= 0
V
CB
= 3V, I
C
= 0
V
CS
= 3V, I
C
= 0
-
-
-
-
300
-
-
-
31 - j1.5
0.3 + j0.04
0.001 + j0.03
See Fig. 14
550
0.6
0.58
2.8
-
-
-
-
-
-
-
-
-
-
-
-
MHz
pF
pF
pF
T
A
= 25
o
C, characteristics apply for each transistor in CA3045 and CA3046 as specified
(Continued)
SYMBOL
h
OE
h
RE
TEST CONDITIONS
f = 1kHz, V
CE
= 3V, I
C
= 1mA
f = 1kHz, V
CE
= 3V, I
C
= 1mA
MIN
-
-
TYP
15.6
1.8 x 10
-4
MAX
-
-
UNITS
µS
-
Typical Performance Curves
10
2
COLLECTOR CUTOFF CURRENT (nA)
10
V
CB
= 15V
V
CB
= 10V
V
CB
= 5V
COLLECTOR CUTOFF CURRENT (nA)
I
E
= 0
10
3
10
2
10
1
10
-1
10
-2
10
-3
0
25
50
75
TEMPERATURE (
o
C)
100
125
0
25
50
75
TEMPERATURE (
o
C)
100
125
V
CE
= 10V
I
B
= 0
1
10
-1
10
-2
10
-3
10
-4
V
CE
= 5V
FIGURE 1. TYPICAL COLLECTOR-TO-BASE CUTOFF CURRENT
vs TEMPERATURE FOR EACH TRANSISTOR
120
V
CE
= 3V
STATIC FORWARD CURRENT
TRANSFER RATIO (h
FE
)
110
100
90
80
70
60
50
0.01
0.8
h
FE2
-------------
OR
-------------
h FE1
h
FE2
h FE1
0.9
T
A
= 25
o
C
h
FE
1.0
BETA RATIO
1.1
FIGURE 2. TYPICAL COLLECTOR-TO-EMITTER CUTOFF
CURRENT vs TEMPERATURE FOR EACH
TRANSISTOR
10
INPUT OFFSET CURRENT (µA)
V
CE
= 3V
T
A
= 25
o
C
1.0
0.1
0.1
1.0
10
0.01
0.01
EMITTER CURRENT (mA)
0.1
1.0
COLLECTOR CURRENT (mA)
10
FIGURE 3. TYPICAL STATIC FORWARD CURRENT TRANSFER
RATIO AND BETA RATIO FOR Q
1
AND Q
2
vs
EMITTER CURRENT
FIGURE 4. TYPICAL INPUT OFFSET CURRENT FOR
MATCHED TRANSISTOR PAIR Q
1
Q
2
vs
COLLECTOR CURRENT
3
CA3045, CA3046
Typical Performance Curves
0.8
BASE-TO-EMITTER VOLTAGE (V)
V
CE
= 3V
T
A
= 25
o
C
V
BE
3
INPUT OFFSET VOLTAGE (mV)
BASE-TO-EMITTER VOLTAGE (V)
(Continued)
V
CE
= 3V
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-75
I
E
= 3mA
I
E
= 1mA
I
E
= 0.5mA
0.7
0.6
2
0.5
INPUT OFFSET VOLTAGE
1
0.4
0.01
0
0.1
1.0
10
EMITTER CURRENT (mA)
-50
-25
0
25
50
75
o
C)
TEMPERATURE (
100
125
FIGURE 5. TYPICAL STATIC BASE-TO-EMITTER VOLTAGE
CHARACTERISTICS AND INPUT OFFSET VOLTAGE
FOR DIFFERENTIAL PAIR AND PAIRED ISOLATED
TRANSISTORS vs EMITTER CURRENT
V
CE
= 3V
4.00
INPUT OFFSET VOLTAGE (mV)
I
E
= 10mA
3.00
FIGURE 6. TYPICAL BASE-TO-EMITTER VOLTAGE
CHARACTERISTIC vs TEMPERATURE FOR EACH
TRANSISTOR
20
V
CE
= 3V
R
S
= 500Ω
T
A
= 25
o
C
f = 0.1kHz
2.00
0.75
0.50
0.25
0
-75
-50
-25
0
25
50
75
TEMPERATURE (
o
C)
100
125
I
E
= 1mA
I
E
= 0.1mA
NOISE FIGURE (dB)
15
f = 1kHz
10
f = 10kHz
5
0
0.01
0.1
COLLECTOR CURRENT (mA)
1.0
FIGURE7. TYPICALINPUTOFFSETVOLTAGECHARACTERISTICS
FOR DIFFERENTIAL PAIR AND PAIRED
ISOLATED TRANSISTORS vs TEMPERATURE
V
CE
= 3V
R
S
= 1000Ω
T
A
= 25
o
C
FIGURE 8. TYPICAL NOISE FIGURE vs COLLECTOR CURRENT
30
V
CE
= 3V
R
S
= 10000Ω
T
A
= 25
o
C
f = 0.1kHz
f = 1kHz
f = 10kHz
20
25
NOISE FIGURE (dB)
1
20
NOISE FIGURE (dB)
15
f = 0.1kHz
f = 1kHz
10
f = 10kHz
5
15
10
5
0
0.01
0.1
COLLECTOR CURRENT (mA)
0
0.01
0.1
COLLECTOR CURRENT (mA)
1
FIGURE 9. TYPICAL NOISE FIGURE vs COLLECTOR CURRENT
FIGURE 10. TYPICAL NOISE FIGURE vs COLLECTOR CURRENT
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