Datasheet ALD4302SB, ALD4302PB, ALD4302DB, ALD4302ASB, ALD4302APB Datasheet (Advanced Linear Devices Inc)

ADVANCED
LINEAR
DEVICES, INC.

ALD4302A/ALD4302

QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER

GENERAL DESCRIPTION

The ALD4302 is a monolithic high performance quad voltage comparator
built with advanced silicon gate CMOS technology. It features very high
typical input impedance of 10

12

Ω; low input bias current of 10pA; fast
response time of 120ns; very low power dissipation of 150µA per compara­tor; and single +5V or dual ±5V power supply operation.

The input voltage range includes ground, making this comparator ideal for
single supply low level signal detection with high source impedance. The
outputs can source and sink current, allowing application flexibility, and can
be used in either wired-OR connection without pull up resistor or push-pull
configuration. The ALD4302 can be used in wired-OR connection with
other open drain circuits such as the ALD2301 and ALD2303 voltage
comparators.

The ALD4302 is ideal for a great variety of precision voltage comparator
applications, especially low level signal detection circuits requiring low
standby power, yet retaining high output current capability.

FEATURES

• Guaranteed to drive 200Ω loads

• Fanout of 30 LS TTL loads

• Low supply current of 150µA each comparator

• Extremely low input bias currents -- 10pA

• Virtually eliminates source impedance effects

• Low operating supply voltage of 3V to 12V

• Single +5V and dual supply ±5V operation

• High speed for both large and small signals -

120ns for TTL inputs and 400ns for 5mV overdrive

• CMOS, NMOS and TTL compatible

• Push-pull outputs

• High output sinking current -- 60mA

• Low supply current spikes

• High gain -- 100V/mV

APPLICATIONS

• MOSFET driver

• High source impedance voltage
comparison circuits

• Multiple limit window comparator

• Power supply voltage monitor

• Photo-detector sensor circuit

• High speed LED driver

• Oscillators

• Battery operated instruments

• Remote signal detection

• Multiple relay drivers

PIN CONFIGURATION

02

-IN

+IN

-IN

+IN

1

2

01

+

3

V

4

1

5

1

6

2

7

2

DB, PB, SB PACKAGE

14

13

12

10

03

04

GND

11

+IN

4

-IN

4

9

+IN

3

-IN

8

3

BLOCK DIAGRAM

+

V

(3)

INVERTING INPUT

(4)

1

(5)

1

(6)

2

(7)

2

- IN

(8)

3

+ IN

(9)

3

- IN

(10)

4

(11)

4

ORDERING INFORMATION

Operating Temperature Range*

-55°C to +125°C0°C to 70°C0°C to +70°C
14-Pin 14-Pin 14-Pin

CERDIP Small Outline Plastic Dip
Package Package( SOIC) Package

ALD4302A DB ALD4302A SB ALD4302A PB
ALD4302 DB ALD4302 SB ALD4302 PB

* Contact factory for industrial temperature range

- IN

NONINVERTING INPUT
+ IN

INVERTING INPUT

- IN

NONINVERTING INPUT
+ IN

INVERTING INPUT

NONINVERTING INPUT

INVERTING INPUT

NONINVERTING INPUT
+ IN

© 1998 Advanced Linear Devices, Inc. 415 T asman Drive, Sunnyvale, California 94089 -1706 Tel: [phone] Fax: [phone] http://www .aldinc.com

-

(2) OUT

(1) OUT

(14) OUT

(13) OUT

1

2

3

4

+

-

+

-

+

-

+

(12)

ABSOLUTE MAXIMUM RATINGS

Supply voltage, V
Differential input voltage range -0.3V to V
Power dissipation 600 mW
Operating temperature range PB, SB package 0°C to +70°C

Storage temperature range -65°C to +150°C
Lead temperature, 10 seconds +260°C

+

13.2V

+

+0.3V

DB package -55°C to +125°C

OPERATING ELECTRICAL CHARACTERISTICS

= 25°C V+= +5V unless otherwise specified

T

A

4302A 4302 Test

Parameter Symbol Min Typ Max Min Typ Max Unit Conditions

Voltage V
Supply V

S
+

±1.5 ±6 ±1.5 ±6 V Dual Supply

3 12 3 12 V Single Supply

Supply I

S

600 1000 600 1000 µARLOAD = ∞

Current

Voltage A
Gain

Input Offset V

VD

OS

30 100 30 100 V/mV RLOAD ≥15KΩ

510mVRLOAD =1.5KΩ

Voltage
Input Offset I

Current

Input Bias I
Current

OS

1

B

1

Common
Mode Input V
Voltage

2

Range

ICR

-0.3 V

Low Level I
Output V

OL

10 200 10 200 pA 0°C ≤ TA ≤ 70°C

800 800

10 200 10 200 pA 0°C ≤ TA ≤ 70°C

1000 1000

+

-1.5

0.18 0.4 0.18 0.4 V V

-0.3 V+ -1.5 V

SINK

INPUT

=12mA

=1V

Voltage Differential
Low Level

Output I

OL

24 60 24 60 mA V

OL

=1.0V

Current

High Level
Output V

OH

3.5 4.5 3.5 4.5 V IOH = -2mA

Voltage

Response R
Time

2

t

RP

400 400 ns CL = 15pF

= 5.1KΩ

L

100mV Input
Step/5mV
Overdrive

= 5.1KΩ

R

120 120 ns C

L

= 15pF

L

TTL- Level Input
Step

Notes:1 Consists of junction leakage currents

2

Sample tested parameters

ALD4302/ALD4302 Advanced Linear Devices 2

TYPICAL PERFORMANCE CHARACTERISTICS

SATURATION VOLTAGE

vs. TEMPERATURE

1.4

VS = ± 2.5V

1.2

I

= 50mA

SINK

1.0

0.8

0.6

0.4

0.2

SATURATION VOLTAGE (V)

0

-55 -25 0 25 50 12510075
TEMPERATURE (°C)

COMMON - MODE VOLTAGE REFERRED

TO SUPPLY VOLTAGE

0.5

V+

-0.5

-1.0

0.5

V-

COMMON - MODE LIMITS (V)

-0.5

VS = ± 2.5V

-55 -25 0 25 50 12510075
TEMPERATURE (°C)

TRANSFER FUNCTION

+6.0

TA = 25°C
V

= ±6V

S

R

= 5.1K

L

0.0

OUTPUT VOLTAGE (V)

-6.0

-2.5
DIFFERENTIAL INPUT VOLTAGE (mV)

0.0

+2.5

RESPONSE TIME FOR VARIOUS

INPUT OVERDRIVES

0

V

V+

INPUT

100

VOLTAGE (mV)

≈≈

+2.5

0.0

OUTPUT

VOLTAGE (V)

-2.5

IN

≈

0V

TTL

50mV

20mV

0.0 0.1 0.2 0.40.3 0.60.5 0.7

V

+

-

OUT

V-

TIME (µs)

TA = 25°C

= ±2.5V

V

S

5mV
10mV

≈

SATURATION VOLTAGE vs.

1.5

1.2

0.9

0.6

VOLTAGE (V)

0.3

OUTPUT SATURATION

0.0

VS = ±2.5V

0 1530456075

OUTPUT SINK CURRENT (mA)

SINK CURRENT

125°C

85°C

25°C

-25°C

-55°C

100

INPUT

VOLTAGE (mV)

+2.5

0.0

OUTPUT

-2.5

VOLTAGE (V)

RESPONSE TIME FOR VARIOUS

INPUT OVERDRIVES

TA = 25°C
V

= ±2.5V

0

V

V+

IN

0V

TTL

0.0 0.1 0.2 0.40.3 0.60.5 0.7

V

+

-

OUT

V-

TIME (µs)

S

5mV
10mV

20mV

50mV

≈≈

ALD4302/ALD4302 Advanced Linear Devices 3

TYPICAL PERFORMANCE CHARACTERISTICS

TOTAL SUPPLY CURRENT vs.

TOTAL SUPPLY VOLTAGE

+

V

1000

­+

800

600

400

SUPPLY CURRENT (µA)

200

4.02.0

6.0

8.0

SUPPLY VOLTAGE (V)

NORMALIZED INPUT OFFSET VOLTAGE

vs. TEMPERATURE

+3

+2

+1

V

CM

V

S

T

= 25°C

A

R

=

L

10.0

= 0V

= ±2.5V

SUPPLY CURRENT vs. TEMPERATURE

1000

900

∞

800

VS = ±2.5V
No Load
All comparators

700
600
500

SUPPLY CURRENT (µA)

400
300

12.0

-55

-25

025

50

100

75

125

TEMPERATURE (°C)

INPUT OFFSET VOLTAGE vs. SUPPLY

VOLTAGE REPRESENTATIVE SAMPLES

6

T

= 25°C

4

2

A

0

-1

VOLTAGE (mV)

-2

NORMALIZED INPUT OFFSET

-3

-55 -25 0 25 50 12510075
TEMPERATURE (°C)

OUTPUT HIGH VOLTAGE

+

V

-0.6

(V)

+

+

V

-0.5

+

-0.4

V

+

V

-0.3

+

-0.2

V

+

-0.1

V

+

V

OUTPUT HIGH VOLTAGE FROM V

2

vs. SUPPLY VOLTAGE

4

SUPPLY VOLTAGE (V)

TA = 25°C

IOH

= -2mA

6

8

10

12

0

-2

-4

INPUT OFFSET VOLTAGE (mV)

-6
2

4

6

SUPPLY VOLTAGE (V)

OUTPUT LOW VOLTAGE

vs. SUPPLY VOLTAGE

0.6

0.5

0.4

0.3

0.2

0.1

OUTPUT LOW VOLTAGE (V)

0.0
2

4

6

SUPPLY VOLTAGE (V)

8

8

10

TA = 25°C

I

= 12mA

OL

10

12

12

ALD4302/ALD4302 Advanced Linear Devices 4

TYPICAL APPLICATIONS

DOUBLE DUAL LIMIT WINDOW COMPARATORZERO CROSSING DETECTOR

+5V

+12V

V

V

IN

+

OUT

50K

VH

2

+12V

+

+12V

-5V

1/4 ALD4302

VH1

+

+12V

V

VL

VL

IN

+

1

+

2

MULTIPLE RELAY DRIVE

V

REF

V

IN

1/4 ALD4302

47K

+5V

+5V

+

50K

VOLTAGE LEVEL TRANSLATOR

+ = +

V

10V

V

REF

V

IN

+

1/4 ALD4302

V

= 1.4V for TTL input

REF

+

V

V

REF

Output V

=

OUT

for CMOS input

2

swings from rail- to- rail

V

OUT

ALD4302

VL1 and VH1 first limit window send warning.

and VH2 second limit window execute system cutoff.

VL

2

ALD4302/ALD4302 Advanced Linear Devices 5

TYPICAL APPLICATIONS

PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER

This circuit eliminates crossover current in the
complementary power transistors. The outputs
can be used to source and sink different loads
or tied together to provide push-pull drive.

1/4 ALD4302

+

V

V

REF

V

IN

+

+12V

10K

V

1

V

IN

40K

V

2

10K

1/4 ALD4302

+12V

+

+12V

+

1/4 ALD4302

TIME DELAY GENERATOR

+

V

R

F1

R

R

T

C

T

F2

R

F3

+12V

1/4 ALD4302

+

1/4 ALD4302

+

1/4 ALD4302

P- Channel VP 02
Power MOSFET

2A Source

2A Sink

N - Channel VN 01
Power MOSFET

V

1

V

2

V

3

+

R

F4

Design & Operating Notes:

1. As each output sources up to 10mA in the output high state, the output stage of a wired-OR low output circuit must be able to sink this current and still provide
desired output voltage levels. For TTL output levels, this consideration limits the number to a maximum of three ALD4302 outputs wired-OR together.

2. In order to minimize stray oscillation, all unused inputs must be tied to ground.

3. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1 pA at room temperature.
These currents are a function of ambient temperature, and would have to be considered in applications where very high source impedance or high accuracy
are involved.

4. The high output sinking current of 60mA for each output offers flexibility in many applications, as a separate buffer or driver would not be necessary to drive the
intended load. However, as the circuit normally operates close to ambient temperature due to its very low power consumption, thermal effects caused by large
output current transients must be considered in certain applications.

ALD4302/ALD4302 Advanced Linear Devices 6