NSC CLC427AJP Datasheet

Features

■

Single +5V supply

■

Input includes V

EE

■

94MHz unity-gain bandwidth

■

-74/-94dBc HD2/HD3

■

60mA output current

■

7.5ns rise/fall time (1Vpp)

■

46ns settling time to 0.1%

Applications

■

Video ADC driver

■

Desktop multimedia

■

Single supply cable driver

■

Instrumentation

■

Video cards

■

Wireless IF amplifiers

■

Telecommunications

General Description

The Comlinear CLC427 is a dual wideband voltage-feedback
operational amplifier that is uniquely designed to provide high
performance from a single power supply. This CLC427 provides
near rail-to-rail operation and the common-mode input range
includes the negative rail. Each of the CLC427’s amplifiers offers
plenty of headroom for single-supply applications as evidenced
by its 4.3Vppoutput voltage from a single 5V supply.

Fabricated with a high-speed complementary bipolar process,
the CLC427 delivers a wide 94MHz unity-gain bandwidth, 7.5ns
rise/fall time and 150V/µs slew rate. For single supply applications
such as video distribution or desktop multimedia, the CLC427
offers low 0.35%, 0.55° differential gain and phase errors.

Each of the CLC427’s amplifiers provides high signal fidelity
with -74/-94dBc 2nd/3rd harmonics (1Vpp, 1MHz, RL=150Ω).
Combining this high fidelity performance with CLC427’s quick
46ns settling time to 0.1% makes it an excellent choice for ADC
buffering.

With its traditional voltage-feedback architecture and high-speed
performance, the CLC427 is the perfect choice for composite
signal conditioning circuit functions such as active filters,
integrators, differentiators, simple gain blocks and buffering.

V

in

50Ω

250Ω

+

-

250Ω

0.1µF

6.8µF

150Ω

NOTE: Vin = 0.15V to 2.3V

1/2

CLC427

V

o

+5V

+

Typical Application

Single +5V Supply operation

Comlinear CLC427
Dual Voltage Feedback Amplifier
for Single Supply Operation

Frequency Response vs. V

out

Magnitude (1dB/div)

Frequency (MHz)

1

10

100



1V

pp

2V

pp

4V

pp

Av = +2V/V

V

o1

V

inv1

V

non-inv1

V

EE

V

o2

V

inv2

V

non-inv2

V

CC

Pinout

DIP & SOIC

Single Supply Response

Output Voltage (V)

Time (100ns/div)

VEE 0

1

2

3

4

V

CC

5



August 1996

Comlinear CLC427

Dual Voltage Feedback Amplifier for Single Supply Operation

N

© 1996 National Semiconductor Corporation http://www.national.com

Printed in the U.S.A.

http://www.national.com 2

PARAMETERS CONDITIONS TYP MIN/MAX RATINGS UNITS NOTES

CLC427AJ 25° 25° 0° to +70° -40° to +85°

FREQUENCY DOMAIN RESPONSE

-3dB bandwidth V

o

< 1.0V

pp

48 32 28 27 MHz B

-3dB bandwidth V

o

< 3.0V

pp

26 16 14 11 MHz

-3dB bandwidth A

V

= +1V/V Vo< 1.0V

pp

94 MHz
rolloff <10MHz 0.1 0.5 0.7 0.8 dB B
peaking DC to 200MHz 0 0.5 0.7 0.8 dB B
linear phase deviation <15MHz 0.3 0.6 0.8 0.9 deg
differential gain NTSC, R

L

=150Ω 0.35 0.7 – – % 2

differential phase NTSC, R

L

=150Ω 0.55 2 – – deg 2

TIME DOMAIN RESPONSE

rise and fall time 1V step 7.5 13 14 16 ns
settling time to 0.1% 1V step 46 70 – – ns
overshoot 1V step 5 13 – – %
slew rate A

V

= +2 2V step 150 90 83 65 V/µs

DISTORTION AND NOISE RESPONSE

2

nd

harmonic distortion 1Vpp, 1MHz 74 – – – -dBc

1V

pp

, 5MHz 62 55 52 52 -dBc B

3

rd

harmonic distortion 1Vpp, 1MHz 94 – – – -dBc

1V

pp

, 5MHz 75 65 63 62 -dBc B

equivalent input noise

voltage >1MHz 10 12.5 13.6 14 nV/√Hz
current >1MHz 4 5 5.5 5.7 pA/√Hz

crosstalk, input referred 10MHz 65 59 59 59 -dB

STATIC DC PERFORMANCE

input offset voltage 2 7 8 10 mV A

average drift 4 – 22 35 µV/˚C

input bias current 17 30 36 45 µAA

average drift 80 – 145 175 nA/˚C

input offset current 0.2 5 6 7.5 µA

average drift 10 – 22 27 nA/˚C
power supply rejection ratio DC 82 65 64 60 dB B
common-mode rejection ratio DC 82 55 53 50 dB
supply current (per amplifier) no load 7 8.5 8.5 8.5 mA A

MISCELLANEOUS PERFORMANCE

input capacitance 1 2 2 2 pF
input resistance 700 500 450 360 kΩ
output impedance @DC 0.07 0.15 0.24 0.7 Ω
input voltage range, high 3.7 3.45 3.25 3.15 V
input voltage range, low 0 0 0 0 V
output voltage range, high R

L

= 150Ω 4.5 4.35 4.3 4.2 V

output voltage range, low R

L

= 150Ω 0.35 0.5 0.5 0.55 V
output voltage range, high no load 4.8 4.6 4.55 4.45 V
output voltage range, low no load 0.45 0.65 0.7 0.75 V
output current source 60 50 40 34 mA
output current sink 36 20 16 10 mA
supply voltage, maximum 7 7 7 V 1
supply voltage, minimum 4 4 4 V 1

transistor count = 124
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are

determined from tested parameters.

Electrical Characteristics

(Vs= +5V1, Vcm= +2.5V, Av= +2, Rf= 250

W,

RL= 150Wto GND; unless specified)

Absolute Maximum Ratings

supply voltage (Vs)

+7

V

I

out

is short circuit protected to ground

common-mode input voltage

VEEto V

CC

maximum junction temperature +175˚C
storage temperature range -65˚C to +150˚C
lead temperature (soldering 10 sec) +260˚C
differential input voltage ±2V
ESD tolerance (Note 3) 2000V

Notes

A)J-level: spec is 100% tested at 25°C, sample tested at 85°C.
B)J-level: spec is sample tested at 25°C.

1) V

s

= VCC– VEE.

2) Tested with R

L

tied to +2.5V.

3) Human body model, 1.5kΩ in series with 100pF.

3 http://www.national.com

Typical Performance Characteristics

(Vs= +5V1, Vcm= +2.5V , Av= +2, Rf=250

W,

RL= 150Wto GND; unless specified)

Non-Inverting Frequency Response

Magnitude (1dB/div)

Frequency (MHz)

1

10

100



Av = 1
Rf = 0

Phase (deg)

-225

-180

-135

-90

-45

0

Av = 2

Av = 4

Av = 10

Av = 10

Av = 4

Av = 2

Av = 1

Vo = 0.25V

pp

Inverting Frequency Response

Magnitude (1dB/div)

Frequency (MHz)

1

10

100



Av = -1

Phase (deg)

-45

0

45

90

135

180

Av = -2

Av = -5

Av = -10

Av = -10

Av = -5

Av = -2

Av = -1

Vo = 0.25V

pp

Frequency Response vs. R

L

Magnitude (1dB/div)

Frequency (MHz)

0

10

100



RL = 1kΩ

Phase (deg)

-225

-180

-135

-90

-45

0

45

90

135

180

225

RL = 150Ω

RL = 75Ω

RL = 75Ω

RL = 150Ω

RL = 1kΩ

Vo = 0.25V

pp

Frequency Response vs. V

out

Magnitude (1dB/div)

Frequency (MHz)

1

10

100



Vo = 4V

pp

Vo = 2V

pp

Vo = 0.25V

pp

Vo = 1V

pp

Frequency Response vs. C

L

Magnitude (1dB/div)

Frequency (MHz)

1

10

100

CL = 10pF

R

s

= 249Ω

CL = 1000pF

R

s

= 22Ω

CL = 100pF
R

s

= 54.9Ω

1k

250Ω

250Ω

R

s

C

L

Open Loop Gain & Phase

Open Loop Gain (dB)

Frequency (MHz)

0.001 0.01 0.1 1 10

100



Phase (deg)

-120

Gain

-20

-100

0

-80

20

-60

40

-40

60

-20

80

0

100

Phase

Harmonic Distortion vs. Frequency

Distortion (dBc)

Frequency (MHz)

0.1 1

10



2nd

RL = 150Ω

-100

-90

-80

-70

-60

-50

3rd

RL = 150Ω

3rd

RL = 1kΩ

2nd

RL = 1kΩ

Vo = 1V

pp

2nd Harmonic Distortion vs. V

out

Distortion (dBc)

Output Amplitude (Vpp)

0123

4



R

L

= 150Ω

-80

-70

-60

-50

-40

-30

10MHz

5MHz

2MHz

1MHz

0.1MHz

-90

3rd Harmonic Distortion vs. V

out

Distortion (dBc)

Output Amplitude (Vpp)

0123

4



R

L

= 150Ω

-80

-70

-60

-50

-40

-30

10MHz

5MHz

2MHz

1MHz

0.1MHz

-90

-100

Small Signal Pulse Response

Output Voltage (0.05V/div)

Time (20ns/div)



Large Signal Pulse Response

Output Voltage (0.5V/div)

Time (20ns/div)



Equivalent Input Noise

Voltage Noise (nV/Hz)

Frequency (MHz)

0.001

0.1

10



Current Noise (pA/Hz)

1

Voltage = 9.5nV/√Hz

1

10

10

100

100

10.01

Current = 3.2pA/√Hz

IB, VIO, vs. Temperature

V

IO

(mV)

Temperature (°C)

-40

-200 204060



I

B

(µA)

-22

I

B

0.5

-20

0.7

-18

0.9

-16

1.1

-14

1.3

-12

1.5

-10

1.7

V

IO

80

Differential Gain and Phase (3.58MHz)

Gain (%)

Number of 150Ω Loads

1234



Phase (deg)

0

0

0.5

0.5

1

1

1.5

1.5

2

2

2.5

2.5

Phase Neg Sync

Gain Neg Sync

RL tied to +2.5V

PSRR, CMRR & Linear R

out

vs. Frequency

PSRR, CMRR (dB)

Frequency (MHz)

0.001 0.01 0.1 1



Output Resistance (Ω)

0

0

5

20

10

40

15

60

20

80

25

100

10

PSRR

R

out

CMRR