Intersil Corporation CA3060A, CA3060 Datasheet

3-1

Semiconductor

January 1999

CA3060

110kHz, Operational

Transconductance Amplifier Array

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright

© Harris Corporation 1999

File Number 537.4

Features

• Low Power Consumption as Lo w as 100mW P er
Amplifier

• Independent Biasing for Each Amplifier

• High Forward Transconductance

• Programmable Range of Input Characteristics

• Low Input Bias and Input Offset Current

• High Input and Output Impedance

• No Effect on Device Under Output Short-Circuit
Conditions

• Zener Diode Bias Regulator

Applications

• For Low Power Conventional Operational Amplifier
Applications

• Active Filters

• Comparators

• Gyrators

• Mixers

• Modulators

• Multiplexers

• Multipliers

• Strobing and Gating Functions

• Sample and Hold Functions

Description

The CA3060 monolithic integrated circuit consists of an array of
three independent Operational Transconductance Amplifiers
(see Note). This type of amplifier has the generic characteris­tics of an operational voltage amplifier with the exception that
the forward gain character istic is best described by transcon­ductance rather than v oltage gain (open-loop voltage gain is the
product of the transconductance and the load resistance,
g

MRL

). When operated into a suitable load resistor and with
provisions for feedback, these amplifiers are well suited for a
wide variety of operational-amplifier and related applications. In
addition, the extremely high output impedance makes these
types particularly well suited for service in active filters.

The three amplifiers in the CA3060 are identical push-pull
Class A types which can be independently biased to achieve a
wide range of characteristics for specific application. The elec­trical characteristics of each amplifier are a function of the
amplifier bias current (I

ABC

). This feature offers the system
designer maximum flexibility with regard to output current capa­bility, power consumption, slew rate, input resistance , input bias
current, and input offset current. The linear variation of the
parameters with respect to bias and the ability to maintain a
constant DC level between input and output of each amplifier
also makes the CA3060 suitable for a v ariety of nonlinear appli­cations such as mixers, multipliers, and modulators .

In addition, the CA3060 incorporates a unique Zener diode
regulator system that permits current regulation below sup­ply voltages normally associated with such systems.

NOTE: Generic applications of the OTA are described in AN-6668.
For improved input operating ranges, refer to CA3080 and CA3280
data sheets (File Nos. 475 and 1174) and application notes AN6668
and AN6818.

Pinout

CA3060

(PDIP)

TOP VIEW

14

15

16

9

13
12
11
10

1
2
3
4
5

7

6

8

+

+

+

AMP 1

BIAS
REG.

REGULATOR OUT

REGULATOR IN

V+

INV. INPUT NO. 3

NON-INV. INPUT NO. 3

BIAS NO. 3

OUTPUT NO. 3

V-

OUTPUT NO. 1
BIAS NO. 1
NON-INV. INPUT NO. 1
INV. INPUT NO. 1
INV. INPUT NO. 2
NON-INV. INPUT NO. 2
BIAS NO. 2
OUTPUT NO. 2

AMP

3

AMP

2

Part Number Information

PART NUMBER

TEMP.

RANGE (oC) PACKAGE

PKG.

NO.

CA3060E -40 to 85 16 Ld PDIP E16.3

[ /Title
(CA30

60)
/Sub­ject
(110k
Hz,
Opera­tional
Transc
onduc­tance
Ampli­fier
Array)
/Autho
r ()
/Key­words
(Har­ris
Semi­con­ductor,
triple,
transco
nduc­tance
ampli­fier,
low
power
op
amp,

OBSOLETE PRODUCT

NO RECOMMENDED REPLACEMENT

Call Central Applications 1-800-442-7747

or email: [e-mail]

3-2

Absolute Maximum Ratings Operating Conditions

Supply Voltage (Between V+ and V- Terminals). . . . . . . 36V (±18V)

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

Differential Input Voltage (Each Amplifier) . . . . . . . . . . . . . . . . . . 5V

Input Current (Each Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . .±1mA

Amplifier Bias Current (Each Amplifier) . . . . . . . . . . . . . . . . . . .2mA

Bias Regulator Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . -5mA

Output Short Circuit Duration (Note 1) . . . . . . . . . . . . . . . . Indefinite

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC

Thermal Information

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

PDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

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

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

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

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. Short circuit may be applied to ground or to either supply.

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

Electrical Specifications T

A

= 25oC, V

SUPPLY

= ±15V

PARAMETER SYMBOL

AMPLIFIER BIAS CURRENT

UNITS

I

ABC

= 1µAI

ABC

= 10µAI

ABC

= 100µA

MIN TYP MAX MIN TYP MAX MIN TYP MAX

Input Offset Voltage
(See Figure 1)

V

IO

-1--1--15mV

Input Offset Current
(See Figure 2)

I

IO

- 3 - - 30 - - 250 1000 nA

Input Bias Current
(See Figures 3, 4)

I

IB

- 33 - - 300 - - 2500 5000 nA

Peak Output Current
(See Figures 5, 6)

I

OM

- 2.3 - - 26 - 150 240 - µA

Peak Output Voltage
(See Figure 7)

Positive V

OM

+ - 13.6 - - 13.6 - 12 13.6 - V

Negative V

OM

- - 14.7 - - 14.7 - 12 14.7 - V

Amplifier Supply Current (Each
Amplifier)
(See Figures 8, 9)

I

A

- 8.5 - - 85 - - 850 1200 µA

Power Consumption
(Each Amplifier)

P - 0.26 - - 2.6 - - 26 36 mW

Input Offset Voltage Sensitivity
(Note 3)

Positive ∆V

IO

/∆V+ - 1.5 - - 2 - - 2 150 µV/V

Negative ∆V

IO

/∆V--20- -20- -30150µV/V

Amplifier Bias Voltage
(Note 4, See Figure 10)

V

ABC

- 0.54 - - 0.60 - - 0.66 - V

DYNAMIC CHARACTERISTICS At 1kHz, Unless Otherwise Specified
Forward Transconductance

(Large Signal)
(See Figures 11, 12)

g

21

- 1.55 - - 18 - 30 102 - mS

Common Mode Rejection
Ratio

CMRR - 110 - - 110 - 70 90 - dB

Common Mode Input Voltage
Range

V

ICR

+12 to

-12

+13 to

-14

- +12 to

-12

+13 to

-14

- +12 to

-12

+13 to

-14

-V

Slew Rate (Test Circuit)
(See Figure 17)

SR - 0.1 - - 1 - - 8 - V/µs

Open Loop (g21) Bandwidth
(See Figure 13)

BW

OL

- 20 - - 45 - - 110 - kHz

CA3060

3-3

Input Impedance Components

Resistance (See Figure 14) R

I

- 1600 - - 170 - 10 20 - kΩ

Capacitance at 1MHz C

I

- 2.7 - - 2.7 - - 2.7 - pF

Output Impedance Components

Resistance (See Figure 15) R

O

- 200 - - 20 - - 2 - MΩ

Capacitance at 1MHz C

O

- 4.5 - - 4.5 - - 4.5 - pF

ZENER BIAS REGULATOR CHARACTERISTICS I

2

= 0.1mA

Voltage (See Figure 16) V

Z

Temperature

Coefficient = 3mV/oC

6.2 6.7 7.9 V

Impedance Z

Z

- 200 300 Ω

NOTES:

3. Conditions for Input Offset Voltage Sensitivity:
a. Bias current derived from the regulator with an appropriate resistor connected from Terminal 1 to the bias terminal on the amplifier

under test V+ is reduced to +13V for V+ sensitivity and V- is reduced to -13V for V- sensitivity.

b. V+ Sensitivity in ,

V- Sensitivity in .

4. T emperature Coefficient; -2.2mV/

o

C (at V

ABC

= 0.54, I

ABC

= 1µA); -2.1mV/oC (at V

ABC

= 0.060V , I

ABC

= 10µA); -1.9mV/oC (at V

ABC

= 0.66V ,

I

ABC

= 100µA)

Electrical Specifications T

A

= 25oC, V

SUPPLY

= ±15V (Continued)

PARAMETER SYMBOL

AMPLIFIER BIAS CURRENT

UNITS

I

ABC

= 1µAI

ABC

= 10µAI

ABC

= 100µA

MIN TYP MAX MIN TYP MAX MIN TYP MAX

µVV⁄

V

OffsetVOffset

for +13V and -15V Supplies–

1V

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

µVV⁄

V

OffsetVOffset

for -13V and +15V Supplies–

1V

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

Schematic Diagram

BIAS REGULATOR AND ONE OPERATIONAL TRANSCONDUCTANCE AMPLIFIER

NOTES:

5. Inverting Input of Amplifiers 1, 2 and 3 is on Terminals 13, 12 and 4, respectively.

6. Non-inverting Input of Amplifiers 1, 2 and 3 is Terminals 14, 11 and 5, respectively.

7. Amplifier Bias Current of Amplifiers 1, 2 and 3 is on Terminals 15, 10 and 6, respectively.

8. Output of Amplifiers 1, 2 and 3 is on Terminals 16, 9 and 7, respectively.

2

1

D

4

D

5

Q

10

INVERTING INPUT

Q1Q

2

D

1

-

+

I

ABC

(NOTE 5)

NON-INVERTING INPUT

(NOTE 6)

ZENER BIAS REGULATOR

AMPLIFIER BIAS INPUT

(NOTE 7)

Q

3

Q

6

Q

7

D

2

Q

5

3

8

D

3

Q

8

OUTPUT (NOTE 8)

V+

V-

Q

4

CA3060

3-4

Typical Performance Curves

FIGURE 1. INPUT OFFSET VOLTAGE vs AMPLIFIER BIAS

CURRENT

FIGURE 2. INPUT OFFSET CURRENT vs AMPLIFIER BIAS

CURRENT

FIGURE 3. INPUT BIAS CURRENT vs AMPLIFIER BIAS CURRENT FIGURE 4. INPUT BIAS CURRENT vs TEMPERATURE

FIGURE 5. PEAK OUTPUT CURRENT vs AMPLIFIER BIAS

CURRENT

FIGURE 6. PEAK OUTPUT CURRENT vs TEMPERATURE

1 10 100 1000

2.0

1.5

1.0

0.5

0.0

AMPLIFIER BIAS CURRENT (µA)

INPUT OFFSET VOLTAGE (mV)

125oC

25

o

C

-55oC

SUPPLY VOLTAGE:

V

S

= ±15

V

S

= ±6

AMPLIFIER BIAS CURRENT (µA)

1 10 100 1000

1000

100

10

1

INPUT OFFSET CURRENT (nA)

SUPPLY VOLTAGE:

V

S

= ±15

V

S

= ±6

T

A

= 25oC

MAXIMUM

TYPICAL

1 10 100 1000

AMPLIFIER BIAS CURRENT (µA)

10

1

0.1

0.01

TYPICAL

MAXIMUM

INPUT BIAS CURRENT (µA)

TA = 25oC
SUPPLY VOLTAGE:

V

S

= ±15

V

S

= ±6

SUPPLY VOLTAGE: VS = ±6

V

S

= ±15

I

ABC

= 100µA

I

ABC

= 10µA

I

ABC

= 1µA

-75 -50 -25 0 25 50 75 100 125
TEMPERATURE (

o

C)

10

1.0

0.1

0.01

INPUT BIAS CURRENT (µA)

PEAK OUTPUT CURRENT (µA)

TYPICAL

MINIMUM

AMPLIFIER BIAS CURRENT (µA)

1 10 100 1000

1000

100

10

1

TA = 25oC
SUPPLY VOLTAGE:

V

S

= ±15

V

S

= ±6

1000

100

10

1

PEAK OUTPUT CURRENT (µA)

-75 -50 -25 0 25 50 75 100 125
TEMPERATURE (

o

C)

I

ABC

= 100µA

I

ABC

= 30µA

I

ABC

= 10µA

I

ABC

= 3µA

I

ABC

= 1µA

SUPPLY VOLTAGE: VS = ±6

V

S

= ±15

CA3060