Intersil Corporation CA3260, CA3260A Datasheet

CA3260, CA3260A

Data Sheet September 1998 File Number 1266.4

4MHz, BiMOS Operational Amplifier with
MOSFET Input/CMOS Output

CA3260A and CA3260 are integrated circuit operational
amplifiers that combine the advantage of both CMOS and
bipolar transistors on a monolithic chip. The CA3260 series
circuits are dual versions of the popular CA3160 series.

Gate protected P-Channel MOSFET (PMOS) transistors are
used in the input circuit to provide very high input
impedance, very low input current, and exceptional speed
performance. The use of PMOS field effect transistors in the
input stage results in common mode input voltage capability
down to 0.5V below the negative supply terminal, an
important attribute in single supply applications.

A complementary symmetry MOS (CMOS) transistor pair,
capable of swinging the output voltage to within 10mV of
either supply voltage terminal (at very high values of load
impedance), is employed as the output circuit.

The CA3260 Series circuits operate at supply voltages
ranging from 4V to 16V, or ±2V to ±8V when using split
supplies. The CA3260A offers superior input characteristics
over those of the CA3260.

Pinout

CA3260, CA3260A (PDIP)

TOP VIEW

Features

• MOSFET Input Stage provides

- Very High Z

- Very Low I

= 1.5TΩ (1.5 x 1012Ω) (Typ)

I

. . . . . . . . . . . . 5pA (Typ) at 15V Operation

I

. . . . . . . . . . . . . . . . . . . . . . 2pA (Typ)at 5V Operation

• Ideal for Single Supply Applications

• Common Mode Input Voltage Range Includes
NegativeSupply Rail; Input TerminalsCan be Swung 0.5V
Below Negative Supply Rail

• CMOS Output Stage Permits Signal Swing to Either (Or
Both) Supply Rails

Applications

• Ground Referenced Single Supply Amplifiers

• Fast Sample-Hold Amplifiers

• Long Duration Timers/Monostables

• Ideal Interface with Digital CMOS

• High Input Impedance Wideband Amplifiers

• Voltage Followers (e.g. Follower for Single Supply D/A
Converter)

• Voltage Regulators (Permits Control of Output Voltage
Down to 0V)

• Wien Bridge Oscillators

OUTPUT (A)

INV. INPUT (A)

NON INV. INPUT (A)

1

A

2

+

-

3

4

V-

8

V+

7

OUTPUT (B)

B

6

-

5

INV. INPUT (B)

NON INV. INPUT (B)

+

• Voltage Controlled Oscillators

• Photo Diode Sensor Amplifiers

Ordering Information

TEMP.

PART NUMBER

CA3260E -55 to 125 8 Ld PDIP E8.3
CA3260AE -55 to 125 8 Ld PDIP E8.3

RANGE (oC) PACKAGE

PKG.

NO.

1

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

1-888-INTERSIL or 321-724-7143

| Copyright © Intersil Corporation 1999

CA3260, CA3260A

Absolute Maximum Ratings Thermal Information

DC Supply Voltage (V+ to V-). . . . . . . . . . . . . . . . . . . . . . . . . . . 16V

DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . (V+ +8V) to (V- -0.5V)

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V

Input Terminal Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA

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

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. 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.

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

PDIP Package . . . . . . . . . . . . . . . . . . . 100 N/A

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

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

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

Electrical Specifications T

= 25oC, Typical Values Intended Only for Design Guidance

A

TYPICAL VALUES

PARAMETER SYMBOL TEST CONDITIONS

Input Resistance R
Input Capacitance C
Unity Gain Crossover Frequency f

VS = ±7.5V 1.5 1.5 TΩ

I

f = 1MHz, VS = ±7.5V 4.3 4.3 pF

I

T

VS = ±7.5V 4 4 MHz

UNITSCA3260A CA3260

Slew Rate SR VS = ±7.5V 10 10 V/µs
Transient Response Rise Time t

Overshoot OS 10 10 %

Settling Time (to <0.1%, VIN = 4V

)tSCL = 25pF, RL = 2kΩ, AV = +1,

P-P

r

CL = 25pF, RL = 2kΩ, AV = +1,
VS = ±7.5V

0.09 0.09 µs

1.8 1.8 µs

VS = ±7.5V
Input Offset Voltage V
Input Offset Current I
Input Current I

IO

IO

I

V+ = 5V, V- = 0V 2 6 mV

V+ = 5V, V- = 0V 0.1 0.1 pA

V+ = 5V, V- = 0V 2 2 pA
Common Mode Rejection Ratio CMRR V+ = 5V, V- = 0V 70 60 dB
Large Signal Voltage Gain A

Common Mode Input Voltage Range V

OL

ICR

VO = 4V

V+ = 5V, V- = 0V

, RL = 20kΩ,

P-P

100 100 kV/V
100 100 dB

V+ = 5V, V- = 0V 0 to 2.5 0 to 2.5 V
Supply Current I+ VO = 5V, RL = ∞, V+ = 5V, V- = 0V 1 1 mA

VO = 2.5V, RL = ∞, V+ = 5V, V- = 0V 1.2 1.2 mA
Power Supply Rejection Ratio PSRR ∆VIO/∆V+, V+ = 5V, V- = 0V 200 200 µV/V

Electrical Specifications For Each Amplifier at T

PARAMETER SYMBOL

= 25oC, V+ = 15V, V- = 0V, Unless Otherwise Specified

A

TEST

CA3260A CA3260

CONDITIONS

UNITSMIN TYP MAX MIN TYP MAX

Input Offset Voltage |VIO|VS= ±7.5V - 2 5 - 6 15 mV
Input Offset Current |IIO|VS= ±7.5V - 0.5 20 - 0.5 30 pA
Input Current I
Large Signal Voltage Gain A

I

OL

VS= ±7.5V - 5 30 - 5 50 pA
VO = 10V

RL = 10kΩ

P-P

,

50 320 - 50 320 - kV/V
94 110 - 94 110 - dB

Common Mode Rejection Ratio CMRR 80 95 - 70 90 - dB

2