Analog Devices CMP401 402 a Datasheet

23 ns and 65 ns

a

FEATURES
23 ns or 65 ns Propagation Delay
Single-Supply Operation
Compatible with 3 V and 5 V Logic
Separate Input and Output Sections
Low Power
Wide Input Range: –5 V to +3.9 V

APPLICATIONS
Battery-Operated Instrumentation
Line Receivers
Level Translators
Read Channel Detection

GENERAL DESCRIPTION

The CMP401 and CMP402 are 23 ns and 65 ns quad comp­arators with separate input and output supplies. Separate supplies
enable the input stage to be operated from +3 V to as high as ±6V.
The output can be supplied with either 3 V or 5 V as determined
by the interface logic or available supplies. Independent input
and output supplies combined with fast propagation make the
CMP401 and CMP402 excellent choices for interfacing to
portable instrumentation.

The CMP401 and CMP402 are specified over the extended indus­trial (–40°C to +125°C) temperature range. Both are available in
narrow SO-16 surface-mount packages and 16-lead TSSOP.

Low Voltage Comparators

CMP401/CMP402

FUNCTIONAL BLOCK DIAGRAM

V

V

=

ANALOG+

0V OR 5V

IN+

IN–

=

V

ANALOG–

+0V OR –5V

NOTE: (V

ANALOG+

50mV

100

90

10

0%

2v

DIGITAL

3V OR 5V

) – (V

ANALOG–

10nS

=

OUTPUT

) 3V

REV. A

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.

CMP401: 20 MHz Noninverting Switching, VIN = ±100 mV

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2002

CMP401/CMP402–SPECIFICATIONS

ELECTRICAL SPECIFICATIONS

(@ V+

ANA

= V+

= 5.0 V, VCM = 0.1 V, –40ⴗC ≤ TA ≤ +125ⴗC, unless otherwise noted.)

DIG

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage

1

V

OS

V

OS

TA = 25°C3mV

4mV
Hysteresis 2mV
Input Bias Current I

Input Offset Current I
Input Common-Mode Voltage Range V

B

I

B

OS

CM

Common-Mode Rejection CMRR 0.1 V ≤ V
Large-Signal Voltage Gain A

VO

TA = 25°C3µA

4 µA

± 3 µA

04.0V

≤ 3.9 V 60 dB

CM

RL = 10 kΩ 10 V/mV

Offset Voltage Drift ∆VOS/∆T1µV/°C

OUTPUT CHARACTERISTICS

Output High Voltage V
Output Low Voltage V

OH

OL

IOH = –3.2 mA 4.6 V
IOL = 3.2 mA 0.2 V

POWER SUPPLY

Power Supply Rejection Ratio PSRR V+
Analog Supply Current – CMP401 I
Digital Supply Current – CMP401 I
Analog Supply Current – CMP401 I
Digital Supply Current – CMP401 I
Analog Supply Current – CMP402 I
Digital Supply Current – CMP402 I
Analog Supply Current – CMP402 I
Digital Supply Current – CMP402 I

ANA

DIG

ANA

DIG

ANA

DIG

ANA

DIG

TA = 25°C6.5mA
VO = 0 V, RL = ∞, TA = 25°C2.0mA

VO = 0 V, RL = ∞ 2.25 mA
TA = 25°C1.4mA
VO = 0 V, RL = ∞, TA = 25°C2.0mA

VO = 0 V, RL = ∞ 2.25 mA

ANA

and V+

2.7 V to 6 V 60 dB

DIG

8.0 mA

1.75 mA

DYNAMIC PERFORMANCE

Propagation Delay – CMP401 t

P

100 mV Step with 20 mV OD
TA = 25°C1723ns

t

P

100 mV Step with 5 mV OD
TA = 25°C33ns

Propagation Delay – CMP402 t

t

P

P

t

P

t

P

100 mV Step with 20 mV OD 30 ns
100 mV Step with 20 mV OD
T

= 25°C5465ns

A

100 mV Step with 5 mV OD
T

= 25°C60ns

A

100 mV Step with 20 mV OD 75 ns

(@ V

= V

ELECTRICAL SPECIFICATIONS

ANA

= 3.0 V, VCM = 0.1 V, TA = 25ⴗC, unless otherwise noted.)

DIG

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage
Input Common-Mode Voltage Range V
Input Differential Voltage Range V
Common-Mode Rejection CMRR 0.1 V ≤ V

1

V

OS

CM

DIFF

4.5 mV
0 2.0 V
± 2.0 V

≤ 1.9 V 60 dB

CM

OUTPUT CHARACTERISTICS

Output High Voltage V
Output Low Voltage V

OH

OL

IOH = –3.2 mA 2.6 V
IOL = 3.2 mA 0.25 V

POWER SUPPLY

Power Supply Rejection Ratio PSRR V+
Analog Supply Current – CMP401 I
Digital Supply Current – CMP401 I
Analog Supply Current – CMP402 I
Digital Supply Current – CMP402 I

ANA

DIG

ANA

DIG

ANA

and V+

2.7 V to 6 V 60 dB

DIG

6mA

VO = 0 V, RL = ∞ 1mA

1.2 mA

VO = 0 V, RL = ∞ 1mA

DYNAMIC PERFORMANCE

Propagation Delay – CMP401 t
Propagation Delay – CMP402 t

P

P

100 mV Step with 20 mV OD 32 ns
100 mV Step with 20 mV OD 70 ns

–2–

REV. A

CMP401/CMP402

ELECTRICAL SPECIFICATIONS

(@ V±

= ±5 V, V

ANA

= 5.0 V, TA = 25ⴗC, unless otherwise noted.)

DIG

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage
Input Common-Mode Voltage Range V
Input Differential Voltage Range V

1

V

OS

CM

DIFF

VCM = 0 V 3 mV

–5.0 +4.0 V
± 8.0 V

Common-Mode Rejection CMRR –4.9 V ≤ VCM ≤ 3.9 V 60 dB
Offset Voltage Drift ∆VOS/∆T15µV/°C

POWER SUPPLY

Power Supply Rejection Ratio PSRR V±
Analog Supply Current – CMP401 I
Digital Supply Current – CMP401 I
Analog Supply Current – CMP402 I
Digital Supply Current – CMP402 I

ANA

DIG

ANA

DIG

± 3 V to ± 6 V 60 dB

ANA

6.5 mA

VO = 0 V, RL = ∞ 2.0 mA

2.0 mA

VO = 0 V, RL = ∞ 2.0 mA

DYNAMIC PERFORMANCE

Propagation Delay – CMP401 t
Propagation Delay – CMP402 t

NOTES

1

Offset voltage is defined as (V

Specifications subject to change without notice.

OS+

+ V

OS–

)/2.

P

P

100 mV Step with 20 mV OD 23 ns
100 mV Step with 20 mV OD 65 ns

REV. A

–3–