Intersil Corporation CA3440 Datasheet

Semiconductor

CA3440

OBSOLETE PRODUCT

January 1999

POSSIBLE SUBSTITUTE PRODUCT

ICL7611, ICL7612

Features

• High Input Resistance. . . . . . . . . . . . . . . . . . .2TΩ (Typ)

• Standby Power at V+ = 5V. . . . . . . . . . . . . 300nW (Typ)

• Supply Current, BW, Slew Rate Programmable Using
External Resistor

• Input Current . . . . . . . . . . . . . . . . . . . . . . . . .10pA (Typ)

• 5V to 15V Supply

• Output Drives Typical Bipolar Type Loads

Part Number Information

PART NUMBER

(BRAND)

CA3440M
(3440)

TEMP.

RANGE (oC) PACKAGE

-55 to 125 8 Ld SOIC M8.15

PKG.

NO.

63kHz, Nanopower,

BiMOS Operational Amplifiers

Description

The CA3440 is an integrated circuit operational amplifier that
combines the advantages of MOS and bipolar transistors on
a single monolithic chip.

The CA3440 BiMOS op amp features gate protected PMOS
transistors in the input circuit to provide very high input
impedance, very low input currents (less than 10pA). This
device operates at total supply voltages from 5V to 15V and
can be operated over the temperature range from -55

o

125

C. The virtues are programmability and very low
standby power consumption (300nW). This operational
amplifier is internally phase compensated to achieve stable
operation in the unity gain follower configuration. Terminals
are also provided for use in applications requiring input
offset voltage nulling. The use of PMOS in the input stage
results in common mode input voltage capability down to

0.5V below the negative supply terminals, an important
attribute for single supply applications. The output stage
uses MOS complementary source follower form which
permits moderate load driving capability (10kΩ) at very low
standby currents (50nA).

o

C to

Pinout

V-/OFFSET NULL

INV. INPUT

NON-INV. INPUT

The CA3440 has the same 8 lead pinout as the “741” and
other industry standard op amps with two exceptions:
terminals one and five must be connected to the negative
supply or to a potentiometer if nulling is required. Terminal 8
must be programmed through an external resistor returned
to the negative supply.

CA3440

(SOIC)

TOP VIEW

1

2

3

4

V-

-

+

8

I

SET

7

V+

6

OUTPUT

5

V-/OFFSET NULL

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

© Harris Corporation 1999

3-146

File Number 1318.5

CA3440

Absolute Maximum Ratings Thermal Information

Supply Voltage (V+ to V-). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V

Differential Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V

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

Input 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)

SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Maximum Junction Temperature (Die). . . . . . . . . . . . . . . . . . . . 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 Typical Values Intended Only for Design Guidance, V

PARAMETER SYMBOL TEST CONDITIONS CA3440 UNITS

Input Resistance R
Input Capacitance C
Output Resistance R
Equivalent Input e
Noise Voltage f = 10kHz 110 nV/√Hz
Short-Circuit Current

Source IOM+15mA

To Opposite Supply

Sink IOM- 4.5 mA
Gain Bandwidth Product f
Slew Rate SR 0.03 V/µs
Transient Response RL = 10kΩ, CL = 100pF

Rise Time t

Overshoot OS 10 %

Electrical Specifications For Equipment Design, At V

PARAMETER SYMBOL

Input Offset Voltage |VIO| - 5 10 mV
Input Offset Current | IIO | - 2.5 30 pA
Input Current | II | - 10 50 pA
Large Signal Voltage Gain A

Common Mode Rejection Ratio CMRR - 100 320 µV/V

Common Mode Input Voltage Range V

Power Supply Rejection Ratio PSRR - 32 320 µV/V

Max Output Voltage VOM+ +3 +3.2 - V

Supply Current I+ - 10 17 µA
Device Dissipation P
Input Offset Voltage Temperature Drift ∆VlO/∆T- 4-µV/oC

I

I
O
N

T

R

f = 1kHz RS = 100Ω 110 nV/√Hz

= ±5V; R

SUPPLY

TEST

CONDITIONS

OL

lCR

V

lCR

VOM- -3 -3.2 - V

RL = 10kΩ 10 100 - kV/V

+ +3.5 +3.7 - V

- -5.0 -5.3 - V

D

= 10MΩ, TA = 25oC, Unless Otherwise Specified

SET

= ±5V, R

SUPPLY

80 100 - dB

70 80 - dB

70 90 - dB

- 100 170 µW

= 10MΩ, TA = 25oC

SET

2TΩ

3.5 pF

450 Ω

63 kHz

5.6 µs

CA3440

UNITSMIN TYP MAX

3-147