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EL2176, EL2276

Data Sheet

December 1995, Rev. B

FN7054

70MHz/1mA Current Mode Feedback Amp

w/Disable

The EL2176/EL2276 are single/dual

current-feedback operational

amplifiers which achieve a -3dB

bandwidth of 70MHz at a gain of +1 while consuming only

1mA of supply current per amplifier. They will operate with

dual supplies ranging from ±1.5V to ±6V, or from single

supplies ranging from +3V to +12V. The EL2176/EL2276

also include a disable/power-down feature which reduces

current consumption to 0mA while placing the amplifier

output in a high impedance state. In spite of its low supply

current, the EL2276 can output 55mA while swinging to ±4V

on ±5V supplies. The EL2176 can output 100mA with similar

output swings. These attributes make the EL2176/EL2276

excellent choices for low power and/or low voltage cable-

driver, HDSL, or RGB applications.

For Single, Dual and Quad applications without disable,

consider the EL2170 (8-Pin Single), EL2270 (8-Pin Dual) or

EL2470 (14-Pin Quad). For higher bandwidth applications

where low power is still a concern, consider the

EL2180/EL2186 family which also comes in similar Single,

Dual and Quad configurations. The EL2180/EL2186 family

provides a -3dB bandwidth of 250MHz while consuming

3mA of supply current per amplifier.

Features

• Single (EL2176) and dual (EL2276) topologies

• 1mA supply current (per amplifier)

• 70MHz -3dB bandwidth

• Low cost

• Fast disable

• Powers down to 0mA

• Single- and dual-supply operation down to ±1.5V

• 0.15%/0.15° diff. gain/diff. phase into 150Ω

• 800V/µs slew rate

• Large output drive current:

100mA (EL2176)

55mA (EL2276)

• Also available without disable in single (EL2170), dual

(EL2270) and quad (EL2470)

• Higher speed EL2180/EL2186 family also available (3mA/

250MHz) in single, dual and quad

Applications

• Low power/battery applications

• HDSL amplifiers

• Video amplifiers

Ordering Information

PART NUMBER

EL2176CN

EL2176CS

EL2276CN

EL2276CS

TEMP. RANGE

-40°C to +85°C

PACKAGE

8-Pin PDIP

8-Pin SOIC

14-Pin PDIP

14-Pin SOIC

PKG. NO.

MDP0031

MDP0027

MDP0031

MDP0027

• Cable drivers

• RGB amplifiers

• Test equipment amplifiers

• Current to voltage converters

Pinouts

EL2176

(8-PIN SO, PDIP)

TOP VIEW

EL2276

(14-PIN SO, PDIP)

TOP VIEW

Manufactured under U.S. Patent No. 5,352,989, 5,351,012, 5,418,495

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

|

Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

EL2176, EL2276

Absolute Maximum Ratings

(T

A

= 25°C)

Voltage between V

S

+ and V

S

- . . . . . . . . . . . . . . . . . . . . . . . . +12.6V

Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . . V

S

- to V

S

+

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±6V

Current into +IN or -IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±7.5mA

Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . See Curves

Operating Ambient Temperature Range . . . . . . . . . .-40°C to +85°C

Operating Junction Temperature Plastic Packages . . . . . . . . . 150°C

Output Current (EL2176) . . . . . . . . . . . . . . . . . . . . . . . . . . . ±120mA

Output Current (EL2276) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±60mA

Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C

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.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests

are at the specified temperature and are pulsed tests, therefore: T

J

= T

C

= T

A

DC Electrical Specifications

PARAMETER

V

OS

TCV

OS

dV

OS

+I

IN

d+I

IN

-I

IN

d-I

IN

CMRR

-ICMR

PSRR

-IPSR

R

OL

+R

IN

+C

IN

CMIR

V

O

V

S

= ±5V, R

L

= 150Ω, ENABLE = 0V, T

A

= 25°C unless otherwise specified.

CONDITIONS

MIN

TYP

2.5

Measured from T

MIN

to T

MAX

EL2276 only

5

0.5

EL2276 only

20

4

EL2276 only

V

CM

= ±3.5 V

V

CM

= ±3.5V

V

S

is moved from ±4V to ±6V

V

S

is moved from ±4V to ±6V

V

OUT

= ±2.5V

V

CM

= ±3.5V

150

1

60

45

1.5

50

4

70

0.5

400

4

1.2

±3.5

V

S

= ±5

V

S

= +5 Single-Supply, High

V

S

= +5 Single-Supply, Low

±3.5

±4.0

4.0

0.3

80

50

100

55

1

0

4.4

45

85

-0.04

-53

4.5

2.0

2

20

5

10

15

5

MAX

15

UNITS

mV

µV/°C

mV

µA

nA

µA

dB

µA/V

dB

µA/V

kΩ

MΩ

pF

V

mA

µA

pF

kΩ

µA

V

DESCRIPTION

Input Offset Voltage

Average Input Offset Voltage Drift

V

OS

Matching

+ Input Current

+I

IN

Matching

- Input Current

-I

IN

Matching

Common Mode Rejection Ratio

- Input Current Common Mode Rejection

Power Supply Rejection Ratio

- Input Current Power Supply Rejection

Transimpedance

+ Input Resistance

+ Input Capacitance

Common Mode Input Range

Output Voltage Swing

I

O

Output Current

EL2176 only

EL2276 only, per Amplifier

I

S

I

S(DIS)

C

OUT(DIS)

R

EN

I

IH

I

IL

V

DIS

V

EN

Supply Current

Supply Current (Disabled)

Output Capacitance (Disabled)

Enable Pin Input Resistance

Logic “1” Input Current

Logic “0” Input Current

Minimum Voltage at ENABLE to Disable

Maximum Voltage at ENABLE to Enable

ENABLE = 2.0V, per Amplifier

ENABLE = 4.5V

Measured at ENABLE = 2.0V, 4.5V

Measured at ENABLE, ENABLE = 4.5V

Measured at ENABLE, ENABLE = 0V

2

EL2176, EL2276

AC Electrical Specifications

PARAMETER

-3dB BW

SR

t

R

, t

F

t

PD

OS

ts

dG

dP

dG

dP

t

ON

t

OFF

CS

NOTES:

1. DC offset from 0V to 0.714V, AC amplitude 286mV

P-P

, f = 3.58MHz.

2. Measured from the application of the logic signal until the output voltage is at the 50% point between initial and final values.

-3dB Bandwidth

Slew Rate

Rise and Fall Time

Propagation Delay

Overshoot

0.1% Settling

Differential Gain

Differential Phase

Differential Gain

Differential Phase

Turn-On Time

Turn-Off Time

Channel Separation

V

S

= ±5V, R

F

= R

G

= 1.0kΩ, R

L

= 150Ω, ENABLE = 0V, T

A

= 25°C unless otherwise specified.

CONDITIONS

A

V

= +1

A

V

= +2

V

OUT

= ±2.5V, A

V

= +2

V

OUT

= ±500mV

V

OUT

= ±50mV

V

OUT

= ±500mV

V

OUT

= ±2.5V, A

V

= -1

A

V

= +2, R

L

= 150Ω (Note 1)

A

V

= +2, R

L

= 150Ω (Note 1)

A

V

= +1, R

L

= 500Ω (Note 1)

A

V

= +1, R

L

= 500Ω (Note 1)

A

V

= +2, V

IN

= +1V, R

L

= 150Ω (Note 2)

A

V

= +2, V

IN

= +1V, R

L

= 150Ω (Note 2)

EL2276 only, f = 5MHz

400

MIN

TYP

70

60

800

4.5

3.0

40

0.15

0.02

0.01

40

1500

85

100

2000

MAX

UNITS

MHz

V/µs

ns

%

ns

%

°

%

°

ns

dB

DESCRIPTION

3

EL2176, EL2276

Test Circuit

(per Amplifier)

Simplified Schematic

(per Amplifier)

4

EL2176, EL2276

Typical Performance Curves

Non-Inverting

Frequency Response (Gain)

Non-Inverting

Frequency Response (Phase)

Frequency Response for

Various R

F

and R

G

Inverting Frequency

Response (Gain)

Inverting Frequency

Response (Phase)

Frequency Response for

Various R

L

and C

L

Transimpedance (R

OL

)

PSRR and CMRR

Frequency Response

for Various C

IN

-

5

EL2176

EL2176概述

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