Datasheet ne527 DATASHEETS (Philips)

Philips Semiconductors Linear Products Product specification

NE527Voltage comparator

315

August 31, 1994 853-0906 13721

DESCRIPTION

The NE527 is a high-speed analog voltage comparator which, for the first time, mates state-of-the-art Schottky diode technology with the conventional linear process. This allows simultaneous fabrication of high speed TTL gates with a precision linear amplifier on a single monolithic chip. The NE527 is similar in design to the Philips Semiconductors NE529 voltage comparator except that it incorporates an “Emitter-Follower” input stage for extremely low input currents. This opens the door to a whole new range of applications for analog voltage comparators.

FEATURES

•15ns propagation delay

•Complementary output gates

•TTL or ECL compatible outputs

•Wide common-mode and differential voltage range

•Typical gain of 5000

PIN CONFIGURATIONS

1

2

3

4

5

6

7 8

14

13

12

11

10

9

V1

+

NC

INPUT A

INPUT B

NC

V1

–

NC

V2

+

STROBE A

OUTPUT A

NC

GND

OUTPUT B

STROBE B

D, N Packages

TOP VIEW

APPLICATIONS

•A/D conversion

•ECL-to-TTL interface

•TTL-to-ECL interface

•Memory sensing

•Optical data coupling

ORDERING INFORMATION

DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #

14-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C NE527N 0405B 14-Pin Small Outline (SO) Package 0 to +70°C NE527D 0175D

EQUIVALENT SCHEMATIC

V

1

20K

1.5K 1.5K

INPUT A

INPUT

B

200

V

1

300300 100 200

750

6.13K

1K 1K

STROBE B

20K

4K 1.5K

STROBE A

4K

250 500

4K

55

250

500

GND

OUTPUT B

OUTPUT A

4K

1.5K

V2

+

55

7.5K

–

7.5K

+

Philips Semiconductors Linear Products Product specification

NE527Voltage comparator

August 31, 1994

316

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNIT

V1+ Positive supply voltage +15 V V1- Negative supply voltage -15 V V2+ Gate supply voltage +7 V V

OUT

Output voltage +7 V

V

IN

Differential input voltage ±5 V

V

CM

Input common mode voltage ±6 V

P

D

Max power dissipation

1

25°C ambient (still air)

N package 1420 mW D package 1040 mW

T

A

Operating temperature range 0 to +70 °C

T

STG

Storage temperature range -65 to +150 °C

T

SOLD

Lead soldering temperature (10sec max) +300 °C

NOTES:

1. Derate above 25°C, at the following rates: N package 11.4mW/°C D package 8.3mW/°C

BLOCK DIAGRAM

V

1

+

STROBE A

OUTPUT A

INPUT A

INPUT B

OUTPUT B

STROBE B

V

1

–

V

2

+

Philips Semiconductors Linear Products Product specification

NE527Voltage comparator

August 31, 1994

317

DC ELECTRICAL CHARACTERISTICS

V1+=10V, V1-=-10V, V2+=+5.0V, unless otherwise specified.

NE527

SYMBOL

PARAMETER

TEST CONDITIONS

Min Typ Max

UNIT

Input characteristics

Input offset voltage @ 25°C 6

V

OS

over temperature range 10

mV

Input bias current @ 25°C 2

I

BIAS

over temperature range 4

µA

Input offset current @ 25°C 0.75 µA

I

OS

over temperature range VIN=0V 1 µA

V

CM

Common-mode voltage range -5 +5 V

Gate characteristics

Output Voltage

“1” State V2+=4.75V, I

SOURCE

=-1mA 2.7 3.3 V

OUT

“0” State V2+=4.75V, I

SINK

=10mA 0.5 V

Strobe inputs

“0” Input current

1

V2+=5.25V, V

STROBE

=0.5V -2 mA

“1” Input current @ 25°C

1

V2+=5.25V, V

STROBE

=2.7V 100 µA

Over temperature range V2+=5.25V, V

STROBE

=2.7V 200 µA “0” Input voltage V2+=4.75V 0.8 V “1” Input voltage V2+=4.75V 2.0 V

I

SC

Short-circuit output current V2+=5.25V, V

OUT

=0V -18 -70 mA

Power supply requirements

Supply voltage V1+ 5 10 V V1- -6 -10 V V2+ 4.75 5 5.25 V

Supply current V1+=10V, V1-=-10V

V2+=5.25V I1+ Over temp. 5 mA I1- Over temp. 10 mA I2+ Over temp. 20 mA

NOTES:

1. See Logic Function Table.

AC ELECTRICAL CHARACTERISTICS

TA=25°C, unless otherwise specified. (See AC test circuit)

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

Min Typ Max

UNIT

Transient response propagation delay time

t

PLH

Low-to-High VIN=±100mV step 16 26 ns

t

PHL

High-to-Low 14 24 ns Delay between output A and B 2 5 ns Strobe delay time

t

ON

Turn-on time 6 ns

t

OFF

Turn-off time 6 ns

V

OUT

Philips Semiconductors Linear Products Product specification

NE527Voltage comparator

August 31, 1994

318

TYPICAL PERFORMANCE CHARACTERISTICS

OFFSET CURRENT

3.0

2.5

2.0

1.5

0

1.0

0.3

0.2

0.1 0

–50 –25 0 25 50 75 100 125

TEMPERATURE —

o

C

INOUR CURRENT — A

µ

I

2

+

V2 + = 5.0V

V1 – = 10V

V1 + = 10V

I

1

–

I

1

+

15 14

13

7 6 5 4 3 2

–50 –25 0 25 50 75 100

TEMPERATURE —

o

C

SUPPLY CURRENT — mA

V

2

+

=

5.0V TA = 25

o

C

160

150

140

130

120

110

100

5 6 7 8 9 10

SUPPLY VOLTAGE (V

1

+

, V

1

–

) — VOLTS

POWER DISSIPATION — mW

TA = 25oC V

2

+

= 5.0V

T

1

–

T

2

+

T

1

+

8 7 6

5 4

3

2 1 0

5 6 7 8 9 10

SUPPLY CURRENT — mA

SUPPLY VOLTAGE (V

1

+

, V

1

–

) — VOLTS

OUTPUT A

OUTPUT B

V

1

+

= 10V, V

1

–

= — 10V

V

2

+

= 5.0V

INPUT A

OVERDRIVE

5 4 3

2 1

0

+100

0

–100

0 5 10 15 20 25 30

TIME — ns

INPUT

VOLTAGE — V

OUTPUT

VOLTAGE — mV

V

1

+

= 10V, V

1

–

= — 10V

V

2

+

= 5.0V

OVERDRIVE

INPUT B

OUTPUT A

5 4 3

2 1

0

+100

0

–100

0 5 10 15 20 25 30

TIME — ns

+

50mV

+

25mV

+

15mV

+

10mV

+

5mV

Input Currents vs Temperature Supply Currents vs Temperature

Power Dissipation vs Supply Voltage

Supply Current

vs Supply Voltage

Output Propagation Delays

Response Time for

Various Input Overdrives

INPUT

VOLTAGE — V

OUTPUT

VOLTAGE — mV

BIAS CURRENT

INPUT PROBE

500Ω

INPUT

51Ω 51Ω

R1

+ 5

R2

+

.1

11K13

3

4

R3

6 8

1K

(V1 +)

+10

10µF

(V1 –)

–10

.1

+5

10

9

11

.1

14

(V2 +)

+5

10µF

+

OUTPUT

PROBE

+5

R

L

5K

CR1

CR2

CR3

CR4

C

L

NOTES:

CR1 — CR4 = IN914 R1 selected for 15.1 divider R2, 3 selected for 100mV at Pin 4

Input PRR = 1MHz

P

w

= 50ns

T

r

= Tf = 2ns

Amplitude = 3.00V

Output R

L

= 390Ω

C

L

= 25pF (including

stray capacitance

RESPONSE TIME TEST CIRCUIT

Philips Semiconductors Linear Products Product specification

NE527Voltage comparator

August 31, 1994

319

APPLICATIONS

One of the main features of the device is that supply voltages (V1+, V

1

-) need not be balanced, as in the following diagrams. For proper

operation, however, negative supply (V

1

-) should always be at least

6V more than the ground terminal (Pin 6). Input common-mode

range should be limited to values of 2V less than the supply voltages (V

1

+ and V1-) up to a maximum of ±5V as supply voltages are increased. It is also important to note that Output A is in phase with Input A and Output B is in phase with Input B.

LOGIC FUNCTION

V

ID

(A+, B–)

STROBE A STROBE B OUTPUT A OUTPUT B COMMENT

VID≤-V

OS

H X L H Read I

IHA

, I

ILB

-VOS<VID<V

OS

H H Undefined Undefined

VID≥V

OS

X H H L Read I

ILA

, I

IHB

X L L H H

TYPICAL APPLICATIONS

+ 5V

3

1 14 Q

Q

11

527N

9

10

6

4

R1R1

R2

ECL

INPUT

TTL OUTPUTS

– 10V

λ

+ 5V

R2

3

1 14 Q

Q

11

529N

9

10

6

4

– 6V

R1

λ

R2

3

1 14 Q

Q

11

527N

9

10

6

4

– 6V

R1

Q

3

1 14

11

529N

9

10

6

4

3

1 14

11

527N

9

10

6

4

1103

MOS RAM

V

REF

+ 5V

100Ω 100Ω

– 6V

3

1 14

11

529N

9

10

6

4

3

1 14

11

527N

9

10

6

4

+ 5V

TTL INPUT

3R

1

R

1

R

1

– 10V – 5.2V

2K 2K

Photodiode Detector ECL–to–TTL Interface

MOS Memory Sense AMP TTL–to–ECL Interface