intersil CA3094B DATA SHEET

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CA3094, CA3094A, CA3094B

Data Sheet April 1999 File Number 598.7

30MHz, High Output Current Operational
Transconductance Amplifier (OTA)

The CA3094 is a differential input power control
switch/amplifier with auxiliary circuit features for ease of
programmability. For example, an error or unbalance signal
can be amplified by the CA3094 to provide an on-off signal or
proportional control output signal up to 100mA. This signal is
sufficient to directly drive high current thyristors, relays, DC
loads, or power transistors. The CA3094 has the generic
characteristics of the CA3080 operational amplifier directly
coupled to an integral Darlington power transistor capable of
sinking or driving currents up to 100mA.

The gain of the differential input stage is proportional to the
amplifier bias current (I
variation of the integrated circuit sensitivity with either digital
and/or analogprogramming signals.For example, at anI
of 100µA, a 1mV change at the input will change the output
from 0 to 100µA (typical).

The CA3094 is intended for operation up to 24V and is
especially useful for timing circuits, in automotive equipment,
and in other applications where operation up to 24V is a
primary design requirement (see Figures 28, 29 and 30 in
Typical Applications text). The CA3094A and CA3094B are
like the CA3094 but are intended for operation up to 36V and
44V, respectively (single or dual supply).

), permitting programmable

ABC

ABC

Features

• CA3094E, M for Operation Up to 24V

• CA3094AT, E, M for Operation Up to 36V

• CA3094BT, M for Operation Up to 44V

• Designed for Single or Dual Power Supply

• Programmable: Strobing, Gating, Squelching, AGC
Capabilities

• Can Deliver 3W (Average)or 10W (Peak) to External Load
(in Switching Mode)

• High Power, Single Ended Class A Amplifier will Deliver
Pow er Output of 0.6W (1.6W Device Dissipation)

• Total Harmonic Distortion (THD) at 0.6W in Class A
Operation 1.4% (Typ)

Applications

• Error Signal Detector: Temperature Control with
Thermistor Sensor; Speed Control for Shunt Wound DC
Motor

• Over Current, Over Voltage, Over Temperature Protectors

• Dual Tracking Power Supply with CA3085

• Wide Frequency Range Oscillator

• Analog Timer

Ordering Information

PART NUMBER

(BRAND)

CA3094AT, BT -55 to 125 8 Pin Metal Can T8.C
CA3094E, AE -55 to 125 8 Ld PDIP E8.3
CA3094M, BM -55 to 125 8 Ld SOIC M8.15

TEMP.

RANGE (oC) PACKAGE

PKG.

Pinouts

CA3094 (PDIP, SOIC)

TOP VIEW

EXT. FREQUENCY

COMPENSATION

OR INHIBIT INPUT

DIFFERENTIAL

VOLTAGE INPUTS

GND (V- IN DUAL

SUPPLY OPERATION)

1
2
3
4

SINK OUTPUT

8

(COLLECTOR)
V+

7

DRIVE OUTPUT

6

(EMITTER)

5

I

CURRENT

ABC

PROGRAMMABLE
INPUT
(STROBE OR AGC)

NO.

• Level Detector

• Alarm Systems

• Voltage Follower

• Ramp Voltage Generator

• High Power Comparator

• Ground Fault Interrupter (GFI) Circuits

CA3094 (METAL CAN)

TOP VIEW

SINK OUTPUT
(COLLECTOR)

EXT. FREQUENCY

COMPENSATION OR

INHIBIT INPUT

2

DIFFERENTIAL

VOLTAGE INPUTS

GND (V- IN DUAL
SUPPLY OPERATION)

NOTE: Pin 4 is connected to case.

8

1

3

4

TAB
7

V+

DRIVE OUTPUT

6

(EMITTER)

5

CURRENT

I

ABC

PROGRAMMABLE INPUT
(STROBE OR AGC)

3-12

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

| Copyright © Intersil Corporation 1999

CA3094, CA3094A, CA3094B

Absolute Maximum Ratings Thermal Information

Supply Voltage (Between V+ and V- Terminals)

CA3094 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V

CA3094A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V

CA3094B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44V

Differential Input Voltage (Terminals 2 and 3, Note 1) . . . . . . . . . 5V

DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V+ to V-

Input Current (Terminals 2 and 3) . . . . . . . . . . . . . . . . . . . . . . ±1mA

Amplifier Bias Current (Terminal 5) . . . . . . . . . . . . . . . . . . . . . . 2mA

Average Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA

Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mA

Operating Conditions

Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC

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. Exceeding this voltage rating will not damage the device unless the peak input signal current (1mA) is also exceeded.

2. θJA is measured with the component mounted on an evaluation PC board in free air.

Thermal Resistance (Typical, Note 2) θJA (oC/W) θJC (oC/W)

PDIP Package . . . . . . . . . . . . . . . . . . . 130 N/A

SOIC Package . . . . . . . . . . . . . . . . . . . 170 N/A

Metal Can Package . . . . . . . . . . . . . . . 175 100

Maximum Junction Temperature (Metal Can Package) . . . . . . .175oC

Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

Electrical Specifications T

= 25oC for Equipment Design. Single Supply V+ = 30V, Dual Supply V

A

SUPPLY

= ±15V , I

= 100µA Unless

ABC

Otherwise Specified

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

INPUT PARAMETERS

Input Offset Voltage V

TA = 25oC - 0.4 5.0 mV

IO

TA = 0oC to 70oC - - 7.0 mV

Input Offset Voltage Change |∆VIO| Change in VIO between I

Input Offset Current I

and I

IO

TA = 25oC - 0.02 0.2 µA

ABC

= 5µA

ABC

= 100µA

- 1 8.0 mV

TA = 0oC to 70oC - - 0.3 µA

Input Bias Current I

TA = 25oC - 0.2 0.50 µA

I

TA = 0oC to 70oC - - 0.70 µA

Device Dissipation P

I

D

= 0mA 8 10 12 mW

OUT

Common Mode Rejection Ratio CMRR 70 110 - dB
Common Mode Input Voltage Range V

ICR

V+ = 30V (High) 27 28.8 - V
V- = 0V (Low) 1.0 0.5 - V
V+ = 15V 12 13.8 - V

V- = -15V -14 -14.5 - V
Unity Gain Bandwidth f
Open Loop Bandwidth at -3dB Point BW
Total Harmonic Distortion

THD PD = 220mW - 0.4 - %

(Class A Operation)

Amplifier Bias Voltage

V

ABC

IC = 7.5mA, VCE = 15V, I

T

OLIC

= 7.5mA, VCE = 15V, I

= 500µA - 30 - MHz

ABC

= 500µA - 4 - kHz

ABC

PD = 600mW - 1.4 - %

- 0.68 - V

(Terminal 5 to Terminal 4)
Input Offset Voltage Temperature

∆VIO/∆T-4-µV/oC

Coefficient
Power Supply Rejection ∆VIO/∆V - 15 150 µV/V
1/F Noise Voltage E
1/F Noise Current I
Differential Input Resistance R
Differential Input Capacitance C

f = 10Hz, I

N

f = 10Hz, I

N

I

I
I

= 20µA 0.50 1.0 - MΩ

ABC

f = 1MHz, V+ = 30V - 2.6 - pF

= 50µA - 18 -

ABC

= 50µA - 1.8 -

ABC

nV/ Hz
pA/ Hz

3-13

CA3094, CA3094A, CA3094B

Electrical Specifications T

= 25oC for Equipment Design. Single Supply V+ = 30V, Dual Supply V

A

Otherwise Specified (Continued)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

OUTPUT PARAMETERS (Differential Input Voltage = 1V)

Peak Output Voltage
(Terminal 6)

Peak Output Voltage
(Terminal 6)

Peak Output Voltage
(Terminal 8)

Peak Output Voltage
(Terminal 8)

Collector-to-Emitter Saturation Voltage
(Terminal 8)

Output Leakage Current

With Q13 “ON” VOM+ V+ = 30V, RL = 2kΩ to GND 26 27 - V
With Q13 “OFF” VOM- - 0.01 0.05 V
Positive VOM+ V+ = 15V, V- = -15V, RL = 2kΩ to -15V 11 12 - V
Negative VOM- - -14.99 -14.95 V
With Q13 “OFF” VOM+ V+ = 30V, RL = 2kΩ to 30V 29.95 29.99 - V
With Q13 “ON” VOM- - 0.040 - V
Positive VOM+ V+ = 15V, V- = -15V,
Negative VOM- - -14.96 - V

V

CE(

RL = 2kΩ to 15V

V+ = 30V, IC = 50mA, Terminal 6

)

SAT

Grounded

V+ = 30V - 2 10 µA
(Terminal 6 to Terminal 4)

Composite Small Signal Current Transfer
Ratio (Beta) (Q12 and Q13)

Output Capacitance Terminal 6 C

Terminal 8 - 17 - pF

h

FE

V+ = 30V, VCE = 5V, IC = 50mA 16,000 100,000 -

f = 1MHz, All Remaining Terminals Tied

O

to Terminal 4

TRANSFER PARAMETERS

Voltage Gain A V+ = 30V, I

RL = 2kΩ

Forward Transconductance to
Terminal 1

Slew Rate (Open
Loop)

Positive Slope SR I
Negative Slope - 50 - V/µs

Unity Gain (Non-Inverting Compensated) I

g

M

= 500µA, RL = 2kΩ - 500 - V/µs

ABC

= 500µA, RL = 2kΩ - 0.70 - V/µs

ABC

= 100µA, ∆V

ABC

OUT

= 20V,

SUPPLY

= ±15V , I

= 100µA Unless

ABC

14.95 14.99 - V

- 0.17 0.80 V

- 5.5 - pF

20,000 100,000 - V/V

86 100 - dB

1650 2200 2750 µS

Schematic Diagram

Q

4

DIFFERENTIAL

VOLTAGE

DIFFERENTIAL

AMPLIFIER

BIAS INPUT

INPUT

VOLTAGE

INPUT

I

ABC

2

Q

1

3

5

D

1

COMPENSATION OR INHIBIT INPUT

D

2

Q

2

EXTERNAL FREQUENCY

D

3

Q

7

Q

6

Q

5

Q

3

D

4

Q

Q

11

3-14

V+

71

D

5

R

1

R

47kΩ

4

2kΩ

8

“SINK”

Q

OUTPUT

12

Q

13

2

6

“SOURCE”

(DRIVE)

V-

OUTPUT

Q

8

9

Q

10

D

6

OUTPUT

MODE

“Source” 6 2 3
“Sink” 8 3 2

OUTPUT

TERM

INPUTS

INV

NON-

INV

CA3094, CA3094A, CA3094B

Operating Considerations

The “Sink” Output (Terminal 8) and the “Drive” Output
(Terminal 6) of the CA3094 are not inherently current (or
power) limited. Therefore, if a load is connected between
Terminal 6 and Terminal 4 (V- or Ground), it is important to
connect a current limiting resistor between Terminal 8 and
Terminal 7 (V+) to protect transistor Q13 under shorted load
conditions. Similarly,if a load is connected between Terminal
8 and Terminal 7 (V+), the current limiting resistor should be
connected between Terminal 6 and Terminal 4 or ground. In
circuit applications where the emitter of the output transistor
is not connected to the most negative potential in the
system, it is recommended that a 100Ω current limiting
resistor be inserted between Terminal 7 and the V+ supply.

Test Circuits

30V

300kΩ

1kΩ

100pF

6

10kΩ

9.9kΩ

E

OUT

5

1

8

30V

100Ω

15V

100Ω

7

2

CA3094

3

4

1/F Noise Measurement Circuit

When using the CA3094, A, or B audio amplifier circuits, it is
frequently necessary to consider the noise performance of the
device.Noise measurements are made in the circuit shown in
Figure 20. This circuit is a 30dB, non-inverting amplifier with
emitter follower output and phase compensation from
Terminal 2 to ground. Source resistors (R

) are set to 0Ω or

S

1MΩ for E noise and I noise measurements, respectiv ely.
These measurements are made at frequencies of 10Hz,
100Hz and 1kHz with a 1Hz measurement bandwidth. Typical
values for 1/f noise at 10Hz and 50µA I

EN18nV Hz⁄= IN1.8pA Hz⁄=

NOTES:

3. Input Offset Voltage: .

4. For Power Supply Rejection Test: (1) vary V+ by -2V; then (2)
vary V- by +2V.

5. Equations:

(1)

V+ Rejection

(2)

V- Rejection

6. Power Supply Rejection: .

and .

E

IO

200

dB()20

200

-----------------=

OUT
100

V

E0OUT E1OUT–

------------------------------------------------ -=

E0OUT E2OUT–

------------------------------------------------ -=

are:

ABC

1

---------------------------------------------

log=

V

REJECTION

†

† Maximum Reading of Step 1 or Step 2

FIGURE 1. INPUT OFFSET VOLTAGE AND POWER SUPPLY REJECTION TEST CIRCUIT

30V

R

5

1

8. I

ABC

8

220Ω

0.001µF

OS

6

150kΩ

--------------------------------=

10

E
6

15V

NOTES:

7. P

DISSIPATION

2

3

1MΩ

= (V+)(I)

7

CA3094

4

FIGURE 2. INPUT OFFSET CURRENT TEST CIRCUIT

OUT

VOLTS

---------------------

AMPS

1MΩ

E

OUT

30V

300kΩ

5

4

15V

NOTE: I

7

2

-

CA3094A

+

3

I

-- -=

I

2

FIGURE 3. INPUT BIAS CURRENT TEST CIRCUIT

3-15

Test Circuits (Continued)

30V

100Ω

100Ω

V

CMR

0.8V TO 27.2V

15V

2

3

9.9kΩ

200Ω

FIGURE 4. COMMON MODE RANGE AND REJECTION RATIO TEST CIRCUIT

7

-

CA3094

+

1

1kΩ

100pF

4.7kΩ

CA3094, CA3094A, CA3094B

10kΩ

8

6

4

10kΩ

E

OUT

NOTES:

9. .

CMRR

100 26V×

=

--------------------------------------------

E

–

2OUTE1OUT

10. Input Voltage Range for CMRR = 1V to 27V.

11. .

CMRR (dB) 20

100 26V×

log=

--------------------------------------------

E

2OUTE1OUT

–

3.6kΩ

120Ω

I

ABC

R

S

(NOTE)

3

R

S

(NOTE)

I

(µA)

ABC

C

COMP

(pF)

50

50 50

5

7

2

-

CA3094A

+

4

1

C

C

NOTE:
RS= 1MΩ

(1/F Noise Current Test).
RS= 0Ω

(1/F Noise Voltage Test).

500 500

FIGURE 5. 1/F NOISE TEST CIRCUIT

+15V

8

6

+15V

500Ω

3kΩ

-15V

OUTPUT
(RMS)

+15V

7

8

6

OUTPUT

R

= 2kΩ

L

-15V

10kΩ

91Ω

100Ω 10Ω

10kΩ

10Ω

R

(Ω)

+15V-15V

R

S

5

I

ABC

2

-

CA3094A

3

+

4

I

S

ABC

(µA)

56K 500

560K 50

56M 5

FIGURE 6. OPEN LOOP GAIN vs FREQUENCY TEST CIRCUIT

+15V

I

ABC

5

2V
0V

2

13kΩ

3

15kΩ

-15V

7

-

CA3094A

+

4

FIGURE 7. OPEN LOOP SLEW RATE vs I

3-16

8

6

2kΩ

TEST CIRCUIT

ABC

E

OUT

56kΩ

5

±10V

10kΩ

2

3

220Ω

0.001µF

-

CA3094A

+

1

7

8

4

-15V

10kΩ

6

2kΩ

FIGURE 8. SLEW RATEvs NON-INVERTING UNITY GAIN

TEST CIRCUIT

E

OUT

Test Circuits (Continued)

CA3094, CA3094A, CA3094B

120VAC

51Ω

+15V

56kΩ

5

-

CA3094A

+

1

C

7

4

C

C

-15V

R

2

2

R

1

3

R

CLOSED

LOOP GAIN

(dB)

R

(kΩ)

1

(kΩ)

010

20 10 1 10
40 1 0.1 10

R

8

1

29V

0

27V

0

R

LOAD

R

1

R

2

R

3

R

4

3V

Time = 1 hr.
S2 Set to R

MT

MT

E

OUT

2

1

4

V+ = 30V

R

5

S

R

2kΩ

3

(NOTE 12)

R

OUTPUT

COMMON

8

6

1

R

6

D

1

7

C

NOTES:

7

+

3

CA3094A

-

2

4

1

S

2

8

5

6

S

12. C1 = 0.5µF
D1 = 1N914
R1 = 0.51MΩ = 3 min.
R2 = 5.1MΩ = 30 min.

R

2

R

3

(kΩ)

∞

10

R3 = 22MΩ = 2 hrs.
R4 = 44MΩ = 4 hrs.
R5 = 1.5kΩ
R6 = 50kΩ
R7 = 5.1kΩ

3

6

R8 = 1.5kΩ

13. Potentiometer required for initial time set to permit device inter­connecting. Time variation with temperature <0.3%/oC.

FIGURE 9. PHASE COMPENSATION TEST CIRCUIT FIGURE 10. PRESETTABLE ANALOG TIMER

Application Information

For additional application information, refer to
Application Note AN6048, “Some Applications of a
Programmable Power/Switch Amplifier IC” and AN6077
“An IC Operational Transconductance Amplifier (OTA)
with Power Capability”.

Design Considerations

The selection of the optimum amplifier bias current (I
depends on:

1. The Desired Sensitivity - The higher the I

, the higher

ABC

thesensitivity, i.e., a greaterdrivecurrent capability at the
output for a specific voltage change at the input.

2. Required Input Resistance - The lower the I

ABC

er the input resistance.

)

ABC

,the high-

If the desired sensitivity and required input resistance are
not known and are to be experimentally determined, or the
anticipated equipment design is sufficiently flexible to
tolerate a wide range of these parameters, it is
recommended that the equipment designer begin his
calculations with an I

of 100µA, since the CA3094 is

ABC

characterized at this value of amplifier bias current.
The CA3094 is extremely versatile and can be used in a

wide variety of applications.

3-17

Typical Applications

CA3094, CA3094A, CA3094B

Z

1

Z

2

-

E

IN

=

Z



------ -



Z



E

OUT

----------------- f

here depends on the characteristics of Z1and Z

E

IN

CA3094

+

2
1

NOTE: In single-ended output operation, the CA3094 may require a pull up or pull down resistor.

FIGURE 11A. INVERTING OP AMP FIGURE 11B. NON-INVERTING MODE, AS A FOLLOWER

FIGURE 11. APPLICA TION OF THE CA3094

V+ = 18V

S

VOLTAGE A

2/3V+

0

+18

0

VOLTAGE AT
TERMINAL 8

1

R

I

I

A

1N914

12V

C

TIME DELAY (s) = RC (APPROX.)

R

1

100kΩ

R

2

220kΩ

R

ABC

220kΩ

2

3

5

+

CA3094

-

4

E

OUT

(NOTE)

7

8

6

2

2kΩ
PULL UP

E

OUT

+

E

IN

Where E

CA3094

-

OUT=EIN

E

OUT

(NOTE)

Problem: To calculate the maximum value of R required to

switch a 100mA output current comparator

18V

Given:

I

ABC

II = 500nA at I

5µA,= R

ABC

= 100µA (from Figure 3)

ABC

3.6MΩ

≈=

-----------

5µA

II=5µA can be determined by drawing a line on Figure 3 through
I

= 100µA and IB= 500nA parallel to the typical TA=25oC

ABC

curve.
Then: II = 33nA at I

R

MAX

R

MAX

† Ratio of I

of I

18V 12V–

--------------------------- - 180MΩ at TA25oC== =
33nA

180MΩ 23†⁄× 120MΩ at T

at TA=25oCtoIIat TA= -55oC for any given value

I

ABC

ABC

= 5µA

55oC–===

A

INPUT

FIGURE 12. RC TIMER

V+

A

0

V+

R

100
kΩ

270

B

100
kΩ

1N914

100
kΩ

kΩ

100
kΩ

0.01µF

A

12V

DC

1

1MΩ

D

R

2

2.2MΩ

C

R

3

1MΩ

7

+

3

CA3094

-

2

4

220kΩ

C

8

5

6

1

0.5µF
E

R
2kΩ

E

LOAD

OUT

0

B

0

C

D

0

V+

E

0

3

/4V+

On a negative going transient at input (A), a negative
pulse at C will turn “on” the CA3094, and the output (E)
will go from a low to a high level.

At the end of the time constant determined by C1,R1,
R2,R3, the CA3094 will return to the “off” state and the
output will be pulled low by R

. This condition will

LOAD

be independent of the interval when input (A) returns
to a high level.

FIGURE 13. RC TIMER TRIGGERED BY EXTERNAL NEGATIVE PULSE

3-18

Typical Applications (Continued)

+

10kΩ MIN

R

1MΩ MAX

2.7MΩ

5V

DC

C

330kΩ

C

-

0.01µF

PAPER OR
MYLAR™

7

3

-

CA3094

2

+

1

4

TYPE
1N914

5

8

6

CA3094, CA3094A, CA3094B

510Ω

47kΩ

20kΩ

E

OUT

1N914

47kΩ

100kΩ

2

3

C

7

+

CA3094

-

5

+15V

1kΩ

8

OUTPUT

6

4

NOTES:

14. R = 1MΩ, C = 1µF.

E

OUT

2ms

120s

15. Time Constant: t ≈ RC x 120.

LINE

16. Pulse Width: ω≈ K(C1/C).

FIGURE 14. FREE RUNNING PULSE GENERATOR

27kΩ

50kΩ

27kΩ

R

100kΩ

P

C

R
100kΩ

560pF

300kΩ

2

3

5

+

CA3094A

-

CURRENT INPUT

OR

VOLTAGE INPUT

R

FIGURE 15. CURRENT OR VOLTAGE CONTROLLED OSCILLA T OR

15V

7

6

-15V

1kΩ

OUTPUT

≈ 5kHz

f

OUT

8

R

2

30V

510Ω

LED

7

8

NOTE:

51kΩ

R

1

4.3kΩ

f

OUT

C 1000pF

---------------------------------------------------=

2RC()ln

6

4

If: R2 = 3.08R1,

300kΩ

R
100kΩ

2

3

1

2R



---------- - 1+



R



f

OUT

1

2

5

+

CA3094A

-

4

1

-------- -=

RC

FIGURE 16. SINGLE SUPPLY ASTABLE MULTIVIBRATOR FIGURE 17. DUAL SUPPLY ASTABLE MULTIVIBRATOR

3-19

Mylar™ is a trademark of E.I. Dupont de Nemours

Typical Applications (Continued)

CA3094, CA3094A, CA3094B

+15V

150kΩ

300kΩ

5

7

-

CA3094A

+

6

4

INPUT

R

100kΩ

R (NOTE 17)

51kΩ

1

3

2

R

2

100kΩ

NOTES:

R1R

2

17. .

18. .

-------------------- -=

R

R1R2+

Threshold± Supply±[]

=

-------------------- -

R1R2+

R

1

FIGURE 18A. DUAL SUPPLY FIGURE 18B. SINGLE SUPPLY

FIGURE 18. COMPARATORS (THRESHOLD DETECTORS) DUAL AND SINGLE SUPPLY TYPES

+15V

2kΩ

8

-15V

OUTPUT

INPUT

NOTES:

19. .

20. .

51kΩ

R

A

200kΩ

R

B

200kΩ

100kΩ

Upper Threshold V+[]

Lower Threshold V+[]

5

7

6

R

R1R

---------------------

R1RA+

R1R

---------------------

R1RB+

R

1RB

---------------------

R1RB+

8

B

A

+

B

+

3

-

CA3094

2

+

4

R

1

----------------------------------------- -

=





----------------------------------------- -

=





2kΩ

OUTPUT

R

B

R

A

TYPE

D1201F

PTC TEMP.

50µF
50V

SENSOR

75kΩ

68kΩ

10kΩ

75kΩ

TEMP.
SET

R

75kΩ

+

10Ω

-

117V
60Hz

FOR NTC SENSOR, INTERCHANGE POSITION OF SENSOR AND .

26V
60Hz

FIGURE 19. TEMPERATURE CONTROLLER

1N914

R

1.5MΩ 1N914

330kΩ

7

2

CA3094

3

1.5kΩ

5

8

4

NOTE: All Resistors are 1/2W.

HEATER

MT

2

1kΩ

MT

6

G

0.01µF

1

3-20

Typical Applications (Continued)

CA3094, CA3094A, CA3094B

V+ INPUT

(NOTE 21)

V- INPUT

(NOTE 22)

2

3

0.0056µF

5.1kΩ

CA3085A

VOLTAGE REG.

4

REF.

1.6V

200kΩ

100Ω

+

2

3

6 7

0.01µF

1

5

CA3094A

-

6

4

10kΩ

1.5kΩ

10kΩ

±1%

NOTE 23

1

5.6Ω

8

R
5kΩ

+15V REG.
OUTPUT

NOTES:

21. V+ Input Range = 19V to 30V for 15V output.

22. V- Input Range = -16V to -30V for -15V output.

COMMON
RETURN

23. Max I

= ±100mA.

OUT

24. Regulation:
∆V

OUT

∆V

OUT

OUT

OUT

Initial()[]∆V

Initial()

100× 0.075% V

100× 0.075% V⁄==

IN

OUT

from 1mA to 50mA)

(I

L

Max Line

7

0.03µF

Max Load

8

-15V REG.
OUTPUT

-----------------------------------------------------------

V

---------------------------------------

==

V

200mV

RANGE

R

47kΩ

(NOTE 27)

L

C

0.02µF

C

0.1µF
(NOTE 28)

10kΩ

±1%

FIGURE 20. DUAL VOLTAGE TRACKING REGULATOR

CIRCUIT TRIPS ON POSITIVE

36V

1mA

33kΩ

+3V

I

ABC

3

100kΩ

2

10µA

3.3MΩ

5

-

CA3094B

+

4

R

TRIP

200

Ω

3.3
kΩ

47kΩ

2

7

6

I

A

20µA

100Ω

8

CIRCUIT
BREAKER
CONTROL
SOLENOID

I

LOAD

3

VOLTS

NOTES:

25. Differential current sensor provides 60mV signal ≈ 5mA of

26. All Resistors are 1/2 Watt, ±10%.

27. RC selected for 3dB point at 200Hz.

PEAKS WILL SWITCH WITHIN

1.5 CYCLES

60mV

TYPICAL

GROUND FAULT
SIGNAL 60Hz

t

unbalance (Trip) current.

VOLTAGE BETWEEN
TERMINALS 2 AND 4

VOLTAGE BETWEEN
TERMINALS 3 AND 4
(ADJUSTABLE WITH

R

)

TRIP

28. C2 = AC bypass.

29. Offset adj. included in R

TRIP

.

30. Input impedance from 2 to 3 = 800kΩ.

1kΩ

0.001µF

31. With no input signal Terminal 8 (output) at 36V.

FIGURE 21. GROUND FAULT INTERRUPTER (GFI) AND WAVEFORMS PERTINENT TO GROUND FAULT DETECTOR

3-21

Typical Applications (Continued)

CA3094, CA3094A, CA3094B

“BOOST”

0.12µF

68Ω

INPUT

25µF

+

(CW)

1800Ω

0.001µF

C

1

(NOTES
32, 33)

TREBLE

15kΩ

0.2µF

1kΩ

“BOOST”

“CUT”
(CCW)

0.001µF

R

1

(CW)

VOLUME

2

3

100kΩ

BASS

0.01µF

5600Ω

5µF

680

kΩ

“CUT”
(CCW)

+

7

+

CA3094B

-

4

5

0.02µF

820Ω

0.47

µF

10kΩ

1

6

6.8pF

8 LEAD

TO-5

1Ω

220Ω

1W

220Ω

1W

30Ω

27Ω

8

COMPENSATION

15µF
+

Q

2N6292

†

THERMAL

NETWORK†

2

Q

1

Q

3

C

2

0.47µF

JUMPER (NOTES 32, 33)

+

2N6292

0.47Ω

0.47Ω

2N6107

4700µF

+

D

- D4 1N5391

1

V+

V-

4700
µF

330Ω

47Ω

D

1

D

2

D

3

D

4

3µH

22Ω

R

2

1.8MΩ
(NOTES 32, 33)

†OPTIONAL THERMAL

COMPENSATION
NETWORK

STANCOR
NO. P-8609
OR EQUIVALENT
(120VAC TO

26.8VCT AT 1A)

R

L

8Ω

8.2Ω

1N5391

120V
60Hz

TYPICAL PERFORMANCE DATA FOR 12W AUDIO AMPLIFIER CIRCUIT

Power Output (8Ω load, Tone Control Set at “Flat”)

Music (at 5% THD, Regulated Supply). . . . . . . . . . . . . . . . . . 15W

Continuous (at 0.2% IMD, 60Hz and 2kHz
Mixed in a 4:1 Ratio, Unregulated Supply)

See Figure 8 in AN6048. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12W

Total Harmonic Distortion

At 1W, Unregulated Supply . . . . . . . . . . . . . . . . . . . . . . . . .0.05%

At 12W, Unregulated Supply . . . . . . . . . . . . . . . . . . . . . . . .0.57%

Input Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250kΩ

Tone Control Range. . . . . . . . . . . . . . . . . . .See Figure 9 in AN6048

NOTES:

32. For standard input: Short C2;R1= 250kΩ,C1= 0.047µF; remove
R2.

33. For ceramic cartridge input: C1= 0.0047µF, R1= 2.5MΩ, remove
jumper from C2; leave R2.

Voltage Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40dB

Hum and Noise (Below Continuous Power Output). . . . . . . . . .83dB

FIGURE 22. 12W AUDIO AMPLIFIER CIRCUIT FEATURINGTRUE COMPLEMENTARY SYMMETRY OUTPUT STAGE WITH CA3094 IN

DRIVER STAGE

3-22

Typical Performance Curves

5

V+ = +15V, V- = -15V

4
3
2
1
0

-1

-2

-3

-4

-5

INPUT OFFSET VOLTAGE (mV)

-6

-7

-8

0.1 1 10 100 1000

o

25

C

-55oC

o

70

C

o

90

C

125oC

AMPLIFIER BIAS CURRENT (µA)

CA3094, CA3094A, CA3094B

3

10

125

90oC

70oC

o

25

-55oC

o

C

C

V+ = +15V, V- = -15V

2

10

1

10

1

0.1

INPUT OFFSET CURRENT (nA)

0.01

0.1 1.0 10 100 1000

o

C

-55

o

C

25
125oC

AMPLIFIER BIAS CURRENT (µA)

FIGURE 23. INPUT OFFSET VOLTAGE vs AMPLIFIER BIAS

CURRENT (I

4

10

V+ = +15V, V- = -15V

3

10

2

10

1

10

3

1.0

INPUT BIAS CURRENT (nA)

0.1

0.1 1 10 100 1000

AMPLIFIER BIAS CURRENT (µA)

, TERMINAL 5)

ABC

0.88µA

125oC
25oC

o

-55

C

FIGURE 25. INPUT BIAS CURRENT vs AMPLIFIER BIAS

CURRENT (I

4

10

V+ = +15V, V- = -15V

3

10

2

10

1

10

125oC

1.0

AMPLIFIER SUPPLY CURRENT (µA)

0.1

0.1 1.0 10 100 1000

25oC

o

C

-55

AMPLIFIER BIAS CURRENT (µA)

, TERMINAL 5)

ABC

TA = 125oC

o

25

C

-55oC

FIGURE 27. AMPLIFIER SUPPLY CURRENT vs AMPLIFIER

BIAS CURRENT (I

, TERMINAL 5)

ABC

FIGURE 24. INPUT OFFSET CURRENT vs AMPLIFIER BIAS

CURRENT (I

5

10

TA = 25oC

4

10

3

10

2

10

1

DEVICE DISSIPATION (µW)

10

1

0.1 1.0 10 100 1000

AMPLIFIER BIAS CURRENT (µA)

, TERMINAL 5)

ABC

V+ = +15V, V- = -15V
V+ = +6V, V- = -6V
V+ = +3V, V- = -3V

FIGURE 26. DEVICE DISSIPATION vs AMPLIFIER BIAS

CURRENT (I

15.0
V+ = +15V, V- = -15V

14.5

= 25oC

T

A

14.0

13.5

13.0

0

-13.0

-13.5

-14.0

-14.5

COMMON MODE INPUT VOLTAGE (V)

-15.0

0.1 1.0 10 100 1000

AMPLIFIER BIAS CURRENT (µA)

, TERMINAL 5)

ABC

V+

CMR

V-

CMR

FIGURE 28. COMMON MODE INPUT VOLTAGEvs AMPLIFIER

BIAS CURRENT (I

, TERMINAL 5)

ABC

3-23

CA3094, CA3094A, CA3094B

Typical Performance Curves (Continued)

50

V+ = +15V, V- = -15V
RS = 0Ω, TA = 25oC

45

FOR TEST CIRCUIT, SEE FIGURE 20

40

35

30

25

20

1/F NOISE VOLTAGE (nV/√Hz)

15

10

1

10

50µA

I

= 5µA

ABC

500µA

2

10

FREQUENCY (Hz)

3

10

100

V+ = +15V, V- = -15V

= 1MΩ, TA = 25oC

R

S

FOR TEST CIRCUIT, SEE FIGURE 20

10

1.0

1/F NOISE CURRENT (pA/√Hz)

0.1

1

10

5µA

I

= 500µA

ABC

50µA

2

10

FREQUENCY (Hz)

FIGURE 29. 1/F NOISE VOLTAGE vs FREQUENCY FIGURE 30. 1/F NOISE CURRENT vs FREQUENCY

10000

FORCED BETA = 10
T

A

1000

= 25oC

1000

V+ = 20V, VCE = 10V
T

= 25oC

A

100

3

10

100

COLLECTOR-TO-EMITTER

SATURATION VOLTAGE (mV)

10

1 10 100 1000

COLLECTOR CURRENT (mA)

FIGURE 31. COLLECTOREMITTER SATURATION VOLTAGE vs

COLLECTOR CURRENT OF OUTPUT
TRANSISTOR (Q13)

110
100

90
80

5µA

70

PHASE ANGLE

60

(I

50
40
30
20

V+ = +15V, V- = -15V, RL = 2kΩ

10

OPEN LOOP VOLTAGE GAIN (dB)

(TERMINAL 6 TO V-), T

0

FOR TEST CIRCUIT, SEE FIGURE 21

-10
110

ABC

10

1

50µA

= 500µA)

10210

FREQUENCY (Hz)

= 25oC

A

3

I

= 500µA

ABC

4

10510610

0

-50

-100

-150

-200

7

PHASE ANGLE (DEGREES)

10

COMPOSITE DC BETA (Q12, Q13)

1

1 10 100 1000

COLLECTOR CURRENT (mA)

FIGURE32. COMPOSITE DCBETAvs COLLECTORCURRENT

OF DARLINGTON CONNECTED OUTPUT
TRANSISTORS (Q12, Q13)

5

10

V+ = +15V, V- = -15V

4

10

3

10

2

10

1

10

FORWARD TRANSCONDUCTANCE (µS)

1

0.1 1.0 10 100 1000

AMPLIFIER BIAS CURRENT (µA)

-55oC
25oC
125oC

FIGURE 33. OPEN LOOP VOLTAGE GAIN vs FREQUENCY FIGURE 34. FORWARD TRANSCONDUCTANCE vs

AMPLIFIER BIAS CURRENT

3-24

CA3094, CA3094A, CA3094B

Typical Performance Curves (Continued)

100

V+ = +15V, V- = -15V, TA = 25oC
FOR TEST CIRCUIT, SEE FIGURE 22

10

1.0

SLEW RATE (V/µs)

0.1
1 10 100 1000

AMPLIFIER BIAS CURRENT (µA)

100

V+ = +15V, V- = -15V, I
FOR TEST CIRCUIT, SEE FIGURE 23

10

1.0

SLEW RATE (V/µs)

0.1
0204060

CLOSED LOOP VOLTAGE GAIN (dB)

= 500µA, TA = 25oC

ABC

80 100

FIGURE 35. SLEW RATE vs AMPLIFIER BIAS CURRENT FIGURE 36. SLEW RATE vs CLOSED LOOP VOLTAGE GAIN

1000

100

80
60

40

20

10

8
6

4

2

PHASE COMPENSATION CAPACITANCE (pF)

1

0204050

V+ = +15V , V- = -15V, I

CLOSED LOOP VOLTAGE GAIN (dB)

100mV OUTPUT SIGNAL WITH
10% OVERSHOOT

FOR PHASE COMPENSATION
TEST CIRCUIT, SEE FIGURE 24

R

C

= 500mA, TA = 25oC

ABC

C

C

1000
800

600
400

200

PHASE COMPENSATION RESISTANCE (Ω)

60 703010

FIGURE 37. PHASE COMPENSATION CAPACITANCE AND RESISTANCE vs CLOSED LOOP VOLTAGE GAIN

3-25