Intersil Corporation CA3290A, CA3290 Datasheet

CA3290, CA3290A

Data Sheet September 1998 File Number 1049.3

BiMOS Dual Voltage Comparators
with MOSFET Input, Bipolar Output

The CA3290A and CA3290 types consist of a dual voltage
comparator on a single monolithic chip. The common mode
input voltage range includes ground even when operated
from a single supply. The low supply current drain makes
these comparators suitable for battery operation; their
extremely low input currents allow their use in applications
that employ sensors with extremely high source
impedances. Package options are shown in the table below.

Pinout

CA3290/A (PDIP)

TOP VIEW

OUTPUT (A1)

INV. INPUT (A

NON-INV. INPUT (A

1

A

1

-

)

1

)

1

V-

+

2
3
4

V+

8

OUTPUT (A

7

A

2

-

+

INV. INPUT (A

6
5

NON-INV. INPUT (A

)

2

)

2

)

2

Features

• MOSFET Input Stage

- Very High Input Impedance (Z

) . . . . . . . . 1.7TΩ (Typ)

IN

- Very Low Input Current at V+ = 5V. . . . . . . 3.5pA (Typ)

- Wide Common Mode Input Voltage Range (V

ICR

) Can Be

Swung 1.5V (Typ) Below Negative Supply Voltage Rail

- Virtually Eliminates Errors Due to Flow of Input Currents

• Output Voltage Compatible with TTL, DTL, ECL, MOS,
and CMOS Logic Systems in Most Applications

Applications

• High Source Impedance Voltage Comparators

• Long Time Delay Circuits

• Square Wave Generators

• A/D Converters

• Window Comparators

Ordering Information

PART

NUMBER

CA3290AE -55 to 125 8 Ld PDIP E8.3
CA3290E -55 to 125 8 Ld PDIP E8.3

TEMP

RANGE (oC) PACKAGE PKG. NO.

Schematic Diagram

I

1

Q

50µA 100µA50µA

D

1

D

2

Q

1

+V

I

-V

I

Q

(ONLY ONE IS SHOWN)

COMPARATOR NO. 1

I

2

9

5

Q2Q

I

3

Q

10

3

Q

6

Q

11

100µA

D

3

D

4

Q

4

BIASING CIRCUIT

FOR CURRENT

SOURCES

V+

I

4

Q

12

V

O

Q

8

Q

7

Q

15

R

1

100kΩ

Q13Q

Q

17

R

2

1kΩ

R

3

5kΩ

Q

5pF

14

18

C

1

TO

COMP.

NO. 2

Q

16

V-

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

CA3290, CA3290A

Absolute Maximum Ratings Thermal Information

Supply Voltage

Single Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +36V

Dual Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V

Differential Input Voltage . . . . . . . . . . . . . . . . 36V or [(V+ - V-) +5V]

(whichever is less)

DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . V+ +5V to V- -5V

Output to V- Short Circuit Duration (Note 1) . . . . . . . . . .Continuous

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

Operating Conditions

Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . -55 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 circuits from the output to V+ can cause excessive heating and eventual destruction of the device.

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

Electrical Specifications V- = 0V, Unless Otherwise Specified

PARAMETER SYMBOL TEST CONDITIONS

Input Offset Voltage V

Temperature Coefficient
of Input Offset Voltage

Input Offset Current I

Input Current I

Supply Current I+ RL = ∞, V+ = 5V -55 - 0.85 1.0 - 0.85 1.6 mA

Voltage Gain A

∆VIO/∆T-8--8-µV/oC

VCM = VO = 1.4V, V+ = 5V Full - 4.5 - - 8.5 - mV

IO

VCM = VO = 0V, V+ = +15V,
V- = -15V

VCM = VO = 1.4V, V+ = 5V 25 - 4.0 10 - 7.5 20 mV
VCM = VO = 0V, V+ = +15V,

V- = -15V

VCM = 1.4V, V+ = 5V Full - 2 28 - 2 32 nA

IO

VCM=0V ,V+ = +15V,V-= -15V Full - 7 28 - 7 32 nA
VCM = 1.4V, V+ = 5V 25 - 2 25 - 2 30 pA
VCM = 0V,

V+ = +15V, V- = -15V
VCM = 1.4V, V+ = 5V 125 - 2.8 45 - 2.8 55 nA

I

VCM=0V ,V+ = +15V,V-= -15V 125 - 13 45 - 13 55 nA
VCM = 1.4V, V+ = 5V 25 - 3.5 40 - 3.5 50 pA
VCM=0V ,V+ = +15V,V-= -15V 25 - 12 40 - 12 50 pA

RL = ∞, V+ = 30V -55 - 1.62 3.0 - 1.62 3.5 mA
RL = ∞, V+ = 5V 25 - 0.8 1.4 - 0.8 1.4 mA
RL = ∞, V+ = 30V 25 - 1.35 3.0 - 1.35 3.0 mA
RL = 15kΩ, V+ = +15V,

OL

V- = -15V

RL = 15kΩ, V+ = +15V ,
V- = -15V

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

PDIP Package . . . . . . . . . . . . . . . . . . . 120 N/A

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

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

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

TEMP

(oC)

Full - 8.5 - - 8.5 - mV

25 - 4.0 10 - 7.5 20 mV

25 - 7 25 - 7 30 pA

Full - 150 - - 150 - V/mV

25 25 800 - 25 800 - V/mV

CA3290A CA3290

UNITSMIN TYP MAX MIN TYP MAX

- 103 - - 103 - dB

88 118 - 88 118 - dB

2

CA3290, CA3290A

Electrical Specifications V- = 0V, Unless Otherwise Specified (Continued)

TEMP

PARAMETER SYMBOL TEST CONDITIONS

Saturation Voltage V

SATISINK

= 4mA, V+ = 5V,

(oC)

125 - 0.22 0.7 - 0.22 0.7 V

+VI = 0V, -VI = 1V
I

= 4mA, V+ = 5V,

SINK

-55 - 0.1 - - 0.1 - V

+VI = 0V, -VI = 1V
I

= 4mA, V+ = 5V,

SINK

25 - 0.12 0.4 - 0.12 0.4 V

+VI = 0V, -VI = 1V

Output Leakage Current I

V+ = 15V Full - 65 - - 65 - nA

OL

V+ = 36V Full - 130 1k - 130 1k nA
V+ = 15V 25 - 100 - - 100 - pA
V+ = 36V 25 - 500 - - 500 - pA

Common Mode Input

V

VO = 1.4V, V+ = 5V 25 V+-3.5V-V+-3.1

ICR

Voltage Range

VO = 0V, V+ = +15V, V- = -15V 25 V+-3.8V-V+-3.4

Common Mode
Rejection Ratio

Power Supply Rejection

CMRR V+ = +15V, V- = -15V 25 - 44 562 - 44 562 µV/V

V+ = 5V 25 - 100 562 - 100 562 µV/V

PSRR V+ = +15V, V- = -15V 25 - 15 316 - 15 316 µV/V

Ratio
Output Sink Current VO = 1.4V, V+ = 5V 25 6 30 - 6 30 - mA
Response Time Rising

t

RL = 5.1kΩ, V+ = 15V 25 - 1.2 - - 1.2 - µs

r

Edge
Response Time Falling

t

RL = 5.1kΩ, V+ = 15V 25 - 200 - - 200 - ns

f

Edge
Large Signal Response

Time

RL = 5.1kΩ, V+ = 15V 25 - 500 - - 500 - ns
RL = 5.1kΩ, V+ = 5V 25 - 400 - - 400 - ns

CA3290A CA3290

- V+-3.5V-V+-3.1

V- -1.5

V- -1.5

- V+-3.8V-V+-3.4

V- -1.6

V- -1.6

UNITSMIN TYP MAX MIN TYP MAX

-V

-V

Test Circuits and Waveforms

CC = 2pF

+15V

1K

V

IN

+

-

1K

-15V

+15V

TO 10X
SCOPE
PROBE

FIGURE 1. PARASITIC OSCILLATIONS TEST CIRCUIT AND WAVEFORMS

3

WITH C

C

Top Trace ≈ 4.5mV/Div. = V

Bottom Trace = 10V/Div. = V

Time Scale = 5µs/Div.

OUT

WITHOUT C

IN

Top Trace ≈ 4.5mV/Div.

C

Bottom Trace = 10V/Div.

Time Scale = 5µs/Div.