Datasheet ALD2303ADA, ALD2303SA, ALD2303PA, ALD2303ASA, ALD2303APA Datasheet (Advanced Linear Devices Inc)

ADVANCED
LINEAR
DEVICES, INC.

ALD2303A/ALD2303

DUAL PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER

GENERAL DESCRIPTION

The ALD2303A/ALD2303 is a precision monolithic high performance
dual 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; very low power dissipation of 7.5µA 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 ALD2303A/ALD2303 can be used in connection with other voltage
comparator circuits such as the ALD2301/ALD2302/ALD4302 voltage
comparators. The output can be connected to a higher external voltage

+

than V

.

The ALD2303A/ALD2303 is ideal for high precision micropower voltage
comparator applications, especially low level signal detection circuits
requiring low standby power, yet retaining high output current
capability.

APPLICATIONS

• Sensor detection circuits

• PCMCIA instruments

• MOSFET driver

• High source impedance voltage

comparison circuits

• Multiple limit window comparator

• Power supply voltage monitor

• Photodetector sensor circuit

• High speed LED driver

• Oscillators

• Battery operated instruments

• Remote signal detection

• Multiple relay drivers

FEATURES

• 3V, 5V and 12V supply

• Guaranteed to drive 200Ω loads

• Fanout of 30LS TTL loads

• Guaranteed maximum supply current of
20µA for each comparator

• Pinout of LM193 type industry standard
comparators

• Extremely low input bias currents -- 10pA

• Virtually eliminates source impedance
effects

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

• CMOS, NMOS and TTL compatible

• Open drain wired-OR outputs

• High output sinking current -- 60mA

• Low supply current spikes

• High gain -- 100V/mV

PIN CONFIGURATION

OUT

-IN

+IN

GND

1

1

2

1

3

1

4

DA, PA, SA PACKAGE

TOP VIEW

+

8

V

7

OUT

2

-IN

6

2

+IN

5

2

BENEFITS

• Extremely low power and high precision combination

• Built-in high input impedance buffer

BLOCK DIAGRAM

• Built-in output driver with up to 60mA sink current

+

ORDERING INFORMATION

Operating Temperature Range *

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

INVERTING INPUT

-IN

NONINVERTING INPUT
+IN

(2)

1

(3)

1

8-Pin Q8-Pin 8-Pin
CERDIP Small Outline Plastic Dip
Package Package (SOIC) Package

INVERTING INPUT

-IN

NONINVERTING INPUT
+IN

(6)

2

(5)

2

ALD2303A DA ALD2303A SA ALD2303A PA
ALD2303 DA ALD2303 SA ALD2303 PA

* Contact factory for industrial temperature range

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

(8) V

+

V

(4) GND

(1) OUT 1

(7) OUT

2

ABSOLUTE MAXIMUM RATINGS

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

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

+

13.2V

+

+0.3V

DA package -55°C to +125°C

OPERATING ELECTRICAL CHARACTERISTICS
T

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

A

2303A 2303 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

15 40 15 40 µARLOAD = ∞

Current

Voltage A

VD

10 100 10 100 V/mV RLOAD ≥15KΩ

Gain
Input Offset V

OS

Voltage 2.0 5.0 0°C ≤ T

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

0.5 1.0 1.5 4.0 mV RLOAD =1.5KΩ

A

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
Current

OL

24 60 24 60 mA V

OL

=1.0V

High Level
Leakage I

LH

0.01 20 0.01 20 nA VOH = 5.0V

Current

≤ 70°C

Response R
Time

2

t

RP

6.5 6.5 µsC

=50KΩ

L

= 15pF

L

10mV Input
Step/10mV
Overdrive

RL = 50KΩ

55µsC

= 15pF

L

TTL- Level Input
Step

Notes:

1

Consists of junction leakage currents

2

Sample tested parameters

ALD2303A/ALD2303 Advanced Linear Devices 14

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-

-0.5

COMMON - MODE VOLTAGE LIMITS (V)

VS = ± 2.5 V

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

TRANSFER FUNCTION

+6.0

TA = 25°C
V

= ±6V

S

R

= 50K

L

0.0

OUTPUT VOLTAGE (V)

-6.0

-2.5

0.0

+2.5

DIFFERENTIAL INPUT VOLTAGE (mV)

RESPONSE TIME FOR VARIOUS

INPUT OVERDRIVES

0

V+

INPUT

100

VOLTAGE (mV)

≈≈

+2.5

0.0

OUTPUT

VOLTAGE (V)

V

IN

0V

50K

+

-

V

OUT

V-

-2.5
0 1 2 4 36 57

TIME (µs)

TTL

10mV

TA = 25°C

= ±2.5V

V

S

≈≈

SATURATION VOLTAGE vs.

1.5

1.2

0.9

0.6

VOLTAGE (V)

OUTPUT SATURATION

0.3

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

V

OUT

TA = 25°C

= ±2.5V

V

S

5mV

10mV

20mV

50mV

≈≈

V+

0

V

IN

0V

50K

+

-

V-

TTL

0 1 2 4 3 6 5 7

TIME (µs)

ALD2303A/ALD2303 Advanced Linear Devices 15

TYPICAL PERFORMANCE CHARACTERISTICS

TOTAL SUPPLY CURRENT vs.

TOTAL SUPPLY VOLTAGE

+

V

­+

4.02.0

6.0

SUPPLY VOLTAGE (V)

8.0

SUPPLY CURRENT (µA)

100

10

1

NORMALIZED INPUT OFFSET VOLTAGE

vs. TEMPERATURE

+3

+2

+1

V

CM

V

S

= 25°C

T

A

R

=

L

10.0

= 0V

= ±2.5V

RESPONSE TIME FOR

REPRESENTATIVE SAMPLES

10

td

∞

5

RESPONSE TIME (µs)

0

12.0

50

LH

100

SAMPLES

VS = ±2.5V
T

= 25°C

A

150

200

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)

RESPONSE TIME FOR

REPRESENTATIVE SAMPLES

10

5

RESPONSE TIME (µs)

0

50

td

HL

100

SAMPLES

VS = ±2.5V

= 25°C

T

A

150

200

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

ALD2303A/ALD2303 Advanced Linear Devices 16

TYPICAL APPLICATIONS

ZERO CROSSING DETECTOR

+3V

50K

V

V

IN

+

OUT

DOUBLE DUAL LIMIT WINDOW COMPARATOR

50K

+12V

VH

2

ALD2303

+12V

+

+12V

-3V

1/2 ALD2303

VH

V

REF

V

MULTIPLE RELAY DRIVE

+5V

IN

+

+5V

47K

50K

V

VL

VL

1

IN

1

2

+

+12V

+12V

+

+

1/2 ALD2303

ALD2303

and VH1 first limit window send warning

VL

1

and VH2 second limit window execute system cutoff

VL

2

VOLTAGE LEVEL TRANSLATOR

V+ = +10V

V

REF

V

IN

+

50K

V

OUT

1/2 ALD2303

V

= 1.4V for TTL input

REF

+

V

=

V

REF

Output V

ALD2303A/ALD2303 Advanced Linear Devices 17

OUT

for CMOS input

2

swings from rail-to-rail

PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER

+

+

+12V

+12V

+12V

P- Channel VP 02
Power MOSFET

2A Source

2A Sink

N - Channel VN 01
Power MOSFET

+12V

10K

40K

10K

V

1

V

2

V

IN

ALD2303

R

R

R ≥ 50 KΩ

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 of the same load.

TYPICAL APPLICATIONS

TIME DELAY GENERATOR

+

V

R

F1

1/2 ALD2303

+

V

V

REF

V

IN

50KΩ

R

R

T

F2

+

C

T

R

F3

1/2 ALD2303

+

1/2 ALD2303

+

1/2 ALD2303

V

1

V

2

V

3

+

R

F4

Design & Operating Notes:

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

2. 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.

3. 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.

ALD2303A/ALD2303 Advanced Linear Devices 18