ELANT EL4452CS, EL4452CN Datasheet

EL4452C

Wideband Variable-Gain Amplifier with Gain of 10

EL4452C December 1994 Rev A

Features

# Complete variable-gain amplifier

complete with output amplifier

# Compensated for Gain

t

10

# 50 MHz signal bandwidth
# 50 MHz gain-control bandwidth
# Low 29 nV/
# Operates on

S

Hz input noise

g

5V tog15V

supplies

# All inputs are differential

l

#

70 dB attenuation@5 MHz

Applications

# AGC variable-gain amplifier
# IF amplifier
# Transducer amplifier

Ordering Information

Part No. Temp. Range Package Outline

EL4452CNb40§Ctoa85§C 14-pin P-DIP MDP0031

EL4452CS

b

40§Ctoa85§C 14-lead SO MDP0027

General Description

The EL4452 is a complete variable-gain circuit. It offers wide
bandwidth and excellent linearity, while including a powerful
output voltage amplifier, drawing modest current. The higher
gain and lower input noise makes the EL4452 ideal for use in
AGC systems.

The EL4452 operates on
range of

g

0.5V. AC characteristics do not change appreciably

g

5V tog15V and has an analog input

over the supply range.

The circuit has an operational temperature of

b

40§Ctoa85§C

and is packaged in 14-pin P-DIP and SO-14.

The EL4452 is fabricated with Elantec’s proprietary comple­mentary bipolar process which gives excellent signal symmetry
and is very rugged.

Connection Diagram

Ý

4452– 1

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.

©

1994 Elantec, Inc.

EL4452C

Wideband Variable-Gain Amplifier with Gain of 10

Absolute Maximum Ratings

a

V
V

S

V

IN

DV

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

Positive Supply Voltage 16.5V
Vato VbSupply Voltage 33V
Voltage at any Input or Feedback Vato V
Difference between Pairs of

IN

Inputs or Feedback 6V

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

T

MAX

and T

MIN

A

per QA test plan QCX0002.

e

(T

25§C)

A

I

IN

b

I

OUT

P

D

T

A

T

S

e

25§C and QA sample tested at T

e

25§C for information purposes only.

A

Current into any Input or

Feedback Pin 4 mA
Output Current 30 mA
Maximum Power Dissipation See Curves
Operating Temperature Range
Storage Temperature Range

e

25§C,

A

b

40§Ctoa85§C

b

60§Ctoa150§C

e

e

T

J

C

TA.

Open-Loop DC Electrical Characteristics

Power supplies atg5V, T

e

25§C, R

A

Parameter Description Min Typ Max

V

V

V

DIFF

CM

OS

Signal Input Differential Input Voltage - Clipping 0.4 0.5 I V

Common-Mode Range (All Inputs; V

Input Offset Voltage 10 I mV

VOS, FB Output Offset Voltage 10 I mV

VG, 100% Extrapolated Voltage for 100% Gain 1.8 2.1 2.2 I V

VG, 0% Extrapolated Voltage for 0% Gain

VG, 1V Gain at V

I

B

I

OS

F

T

GAIN

Input Bias Current (All Inputs)

Input Offset Current Between V

Signal Feedthrough, V

RIN, Signal Input Resistance, Signal Input 25 60 I kX

RIN, Gain Input Resistance, Gain Input 50 120 I kX

RIN, FB Input Resistance, Feedback 25 60 V kX

CMRR Common-Mode Rejection Ratio, V

F

e

910X,R

G

e

100X,R

e

500X

L

Test

Level

0.6% Nonlinearity 0.4 V V

e

DIFF

e

1 (Rfe910X,Rge100X) 4.9 5.35 5.9 I V/V

a

and V

G

eb

1V

V

IN

GAIN

IN

a

and V

IN

e

0) V

b

GAIN

g

S

e

g

V

S

, 0.5 4 I mA

b

g

5V

2.0

15Vg12.0

b

0.16

b

20

g

2.8 I V

g

12.8 V V

b

0.06 0.04 I V

b

90 I mA

b

100

b

70 I dB

70 90 I dB

Units

TD is 3.3in

2

EL4452C

Wideband Variable-Gain Amplifier with Gain of 10

Open-Loop DC Electrical Characteristics

Power supplies atg5V, T

e

25§C, R

A

Parameter Description Min Typ Max

F

e

910X,R

G

e

100X,R

L

e

Ð Contd.

500X

Test

Level

PSRR Power-Supply Rejection Ratio, VOS, FB; Supplies fromg5V tog15V 65 83 I dB

E

G

Gain Error, Excluding Feedback Resistors, V

NL Nonlinearity, VINfromb0.25V toa0.25, V

V

O

I

SC

I

S

Output Voltage Swing V

e

(V

0, V

IN

Varied) V

REF

Output Short-Circuit Current 40 85 I mA

e

Supply Current, V

g

15V 15.5 18 I mA

S

e

2.5V

GAIN

e

1V 0.3 0.6 I %

GAIN

e

S

e

g

S

g

5Vg2.5

b

7

a

7I %

g

2.8 I V

15Vg12.5g12.8 I V

Closed-Loop AC Electrical Characteristics

Power supplies atg12V, T

e

25§C, R

A

Parameter Description Min Typ Max

BW,b3dB

b

3dB Small-Signal Bandwidth, Signal Input 50 V MHz

BW,g0.1dB 0.1dB Flatness Bandwidth, Signal Input 10 V MHz

Peaking Frequency Response Peaking 0.1 V dB

BW, Gain

b

3dB Small-Signal Bandwidth, Gain Input 50 V MHz

SR Slew Rate, V

V

N

Input-Referred Noise Voltage Density 29 V nV/rt-Hz

L

e

500X,C

e

15pF

L

Test

Level

betweenb2V anda2V 350 400 550 I V/ms

OUT

Units

Test Circuit

Units

TD is 1.5in TD is 1.5in

Note: For typical performance curves, R

F

e

910X,R

G

e

100X,V

GAIN

3

e

1V, R

e

L

500X, and C

4452– 2

e

15 pF unless otherwise noted.

L

EL4452C

Wideband Variable-Gain Amplifier with Gain of 10

Typical Performance Curves

Frequency Response for
Various Feedback Divider Ratios

Frequency Response for
Various Gains

Frequency Response for
Various R

b

vs Supply Voltage

L,CL,VS

3 dB Bandwidth

4452– 3

e

g

5V

4452– 5

Frequency Response for
Various R

b

vs Die Temperature

L,CL,VS

3 dB Bandwidth

e

g

15V

4452– 4

4452– 6

4452– 7

4452– 8

4