ELANT EL2470CS, EL2470CN, EL2270CS, EL2270CN, EL2170CW Datasheet

EL2170C/EL2270C/EL2470C

70 MHz/1 mA Current Mode Feedback Amplifiers

EL2170C/EL2270C/EL2470C January 1996, Rev. B

Features

# Single (EL2170C), dual

(EL2270C) and quad (EL2470C)
topologies

# 1 mA supply current (per

amplifier)

# 70 MHz

b

3 dB bandwidth

# Tiny SOT23-5 Package

(EL2170C)

# Low cost
# Single- and dual-supply

operation down to

# 0.15%/0.15

§

g

1.5V

diff. gain/diff. phase

into 150X

# 800 V/ms slew rate
# Large output drive current:

100 mA (EL2170C)

55 mA (EL2270C)
55 mA (EL2470C)

# Also available with disable in

single (EL2176C) and dual
(EL2276C)

# Higher speed EL2180C/EL2186C

family also available (3 mA/
250 MHz) in single, dual and
quad

Applications

General Description

The EL2170C/EL2270C/EL2470C are single/dual/quad cur­rent-feedback operational amplifiers which achieve a
bandwidth of 70 MHz at a gain of

a

1 while consuming only
1 mA of supply current per amplifier. They will operate with
dual supplies ranging from
plies ranging from

a

g

1.5V tog6V, or from single sup-

3V toa12V. In spite of their low supply
current, the EL2270C and the EL2470C can output 55 mA while
swinging to

g

4V ong5V supplies. The EL2170C can output
100 mA with similar output swings. These attributes make the
EL2170C/EL2270C/EL2470C excellent choices for low power
and/or low voltage cable-driver, HDSL, or RGB applications.

For applications where board space is extremely critical, the
EL2170C is available in the tiny 5-Lead SOT23 package, which
has a footprint 28% the size of an 8-Lead SOIC. The EL2170C/
EL2270C/EL2470C are each also available in industry standard
pinouts in PDIP and SOIC packages.

For Single and Dual applications with disable, consider the
EL2176C (8-Pin Single) or EL2276C (14-Pin Dual). For higher
speed applications where power is still a concern, consider the
EL2180C/El2186C family which also comes in similar Single,
Dual, Triple and Quad configurations. The EL2180C/EL2186C
family provides a

b

3 dB bandwidth of 250 MHz while consum-

ing 3 mA of supply current per amplifier.

b

3dB

Connection Diagrams

EL2170C SO, P-DIP EL2270C SO, P-DIP

# Low power/battery applications
# HDSL amplifiers
# Video amplifiers
# Cable drivers
# RGB amplifiers
# Test equipment amplifiers
# Current to voltage converters

EL2170C SOT23-5

EL2470C SO, P-DIP

2170– 1

Ordering Information

Part No. Temp. Range Package Outline

EL2170CNb40§Ctoa85§C 8-Pin PDIP MDP0031

EL2170CSb40§Ctoa85§C 8-Pin SOIC MDP0027

EL2170CWb40§Ctoa85§C 5-Pin SOT23* MDP0038

EL2270CNb40§Ctoa85§C 8-Pin PDIP MDP0031

EL2270CSb40§Ctoa85§C 8-Pin SOIC MDP0027

EL2470CNb40§Ctoa85§C 14-Pin PDIP MDP0031

EL2470CSb40§Ctoa85§C 14-Pin SOIC MDP0027

*See Ordering Information section of
databook.

Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a ‘‘controlled document’’. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

©

1995 Elantec, Inc.

Ý

Top View

2170– 46

2170– 2

EL2170C/EL2270C/EL2470C

70 MHz/1 mA Current Mode Feedback Amplifiers

Absolute Maximum Ratings

Voltage between V
Common-Mode Input Voltage V
Differential Input Voltage
Current into
Internal Power Dissipation See Curves
Operating Ambient Temperature Range

Important Note:
All parameters having Min/Max specifications are guaranteed. The Test Level column indicates the specific device testing actually
performed during production and Quality inspection. Elantec performs most electrical tests using modern high-speed automatic test
equipment, specifically the LTX77 Series system. Unless otherwise noted, all tests are pulsed tests, therefore T

Test Level Test Procedure

I 100% production tested and QA sample tested per QA test plan QCX0002.

II 100% production tested at T

III QA sample tested per QA test plan QCX0002.
IV Parameter is guaranteed (but not tested) by Design and Characterization Data.

V Parameter is typical value at T

S

a

IN orbIN

a

and V

T

MAX

b

S

and T

b

A

per QA test plan QCX0002.

MIN

DC Electrical Characteristics

Parameter Description Conditions Min Typ Max

V

OS

TCV

OS

dV

OS

a

I

IN

daI

IN

b

I

IN

dbI

IN

CMRR Common Mode Rejection V

b

ICMR

Input Offset Voltage 2.5 15 I mV

Average Input Offset Measured from T
Voltage Drift

VOSMatching EL2270C, EL2470C only 0.5 V mV

a

Input Current 0.5 5 I mA

a

IINMatching EL2270C, EL2470C only 20 V nA

b

Input Current 4 15 I mA

b

IINMatching EL2270C, EL2470C only 1.5 V mA

Ratio

b

Input Current Common V

Mode Rejection

e

(T

25§C)

A

S

b

g

a

12.6V

to V

g

7.5 mA

Operating Junction Temperature

a

S

6V

Plastic Packages 150
Output Current (EL2170C)
Output Current (EL2270C)
Output Current (EL2470C)

40§Ctoa85§C

e

25§C and QA sample tested at T

e

25§C for information purposes only.

A

e

V

S

e

g

CM

e

g

CM

Storage Temperature Range

e

g

5V, R

L

MIN

3.5V 45 50 I dB

3.5V 4 10 I mA/V

150X,T

to T

MAX

e

25§C,

A

e

25§C unless otherwise specified

A

5VmV/§C

b

65§Ctoa150§C

e

e

T

J

C

Test

Level

TA.

g

120 mA

g

g

Units

§

60 mA
60 mA

PSRR Power Supply Rejection VSis moved fromg4V tog6V 60 70 I dB

Ratio

b

IPSR

b

Input Current Power VSis moved fromg4V tog6V 0.5 5 I mA/V

Supply Rejection

e

R

OL

a

R

IN

a

C

IN

Transimpedance V

a

Input Resistance V

a

Input Capacitance 1.2 V pF

CMIR Common Mode Input Range

g

OUT

CM

2.5V 150 400 I kX

e

g

3.5V 1 4 I MX

g

3.5g4.0 I V

C

TDis3.8in

2

EL2170C/EL2270C/EL2470C

70 MHz/1 mA Current Mode Feedback Amplifiers

DC Electrical Characteristics

e

g

V

S

5V, R

L

e

150X,T

e

25§C unless otherwise specified

A

Ð Contd.

Parameter Description Conditions Min Typ Max

e

V

O

I

O

Output Voltage Swing V

Output Current EL2170C only 80 100 I mA

g

5

S

ea

V

5 Single-Supply, High 4.0 V V

S

ea

V

5 Single-Supply, Low 0.3 V V

S

g

3.5

g

4.0 I V

EL2270C only, per Amplifier 50 55 I mA

EL2470C only, per Amplifier 50 55 I mA

I

S

Supply Current Per Amplifier 1 2 I mA

AC Electrical Characteristics

e

g

V

S

Parameter Description Conditions Min Typ Max

b

3dBBW

b

3dBBW

SR Slew Rate V

tr,t

f

t

pd

OS Overshoot V

t

s

dG Differential Gain A

dP Differential Phase A

dG Differential Gain A

dP Differential Phase A

C

S

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

5V, R

e

e

R

F

1kX,R

G

b

3 dB Bandwidth A

b

3 dB Bandwidth A

Rise and Fall Time V

Propagation Delay V

0.1% Settling V

L

e

150X,T

e

25§C unless otherwise specified

A

ea

1 70 V MHz

V

ea

2 60 V MHz

V

OUT

OUT

OUT

OUT

OUT

V

V

V

V

e

e

e

e

e

ea

ea

ea

ea

g

g

g

g

g

2, R

2, R

1, R

1, R

ea

2.5V, A

2 400 800 IV V/ms

V

500 mV 4.5 V ns

500 mV 4.5 V ns

500 mV 3.0 V %

eb

2.5V, A

e

L

e

L

e

L

e

L

140Vns

V

150X (Note 1) 0.15 V %

150X (Note 1) 0.15 V

500X (Note 1) 0.02 V %

500X (Note 1) 0.01 V

Channel Separation EL2270C, EL2470C only, fe5 MHz 85 V dB

,fe3.58 MHz.

P-P

Test

Level

Test

Level

Units

TDis1.6inTDis2.6in

Units

§

§

3

EL2170C/EL2270C/EL2470C

70 MHz/1 mA Current Mode Feedback Amplifiers

Test Circuit

(per Amplifier)

Simplified Schematic

2170– 3

(per Amplifer)

2170– 4

4

EL2170C/EL2270C/EL2470C

70 MHz/1 mA Current Mode Feedback Amplifiers

Typical Performance Curves

Non-Inverting
Frequency Response (Gain)

Inverting Frequency
Response (Gain)

Transimpedance (ROL)

2170– 5

2170– 8

Non-Inverting
Frequency Response (Phase)

2170– 6

Inverting Frequency
Response (Phase)

2170– 9

PSRR and CMRR

Frequency Response for
Various RFand R

Frequency Response for
Various RLand C

Frequency Response
for Various C

G

L

b

IN

2170– 7

2170– 10

2170– 11

2170– 12

2170– 13

5