NSC CLC451AJP, CLC451AJM5X, CLC451AJM5, CLC451AJE-TR13, CLC451AJE Datasheet

Features

■

100mA output current

■

1.5mA supply current

■

85MHz bandwidth (Av= +2)

■

-66/-75dBc HD2/HD3 (1MHz)

■

25ns settling to 0.05%

■

260V/µs slew rate

■

Stable for capacitive loads up to 1000pF

■

Single 5V to ±5V supplies

■

Available in Tiny SOT23-5 package

Applications

■

Coaxial cable driver

■

Twisted pair driver

■

Transformer/Coil Driver

■

High capacitive load driver

■

Video line driver

■

Portable/battery-powered applications

■

A/D driver

V

EE

1kΩ

1kΩ

0.1µF

6.8µF

V

in

5kΩ

5kΩ

+

+5V

+5V

1

CLC451

7
6

8

5

3
4

2

1kΩ

1kΩ

0.1µF

0.1µF
V

o

10m of 75Ω

Coaxial Cable

75Ω

0.1µF

75Ω

Typical Application

Single Supply Cable Driver

Pinout

DIP & SOIC

General Description

The CLC451 is a low cost, high speed (85MHz) buffer that
features user-programmable gains of +2, +1, and -1V/V. It has a
new output stage that delivers high output drive current (100mA),
but consumes minimal quiescent supply current (1.5mA) from a
single 5V supply. Its current feedback architecture, fabricated in
an advanced complementary bipolar process, maintains consis­tent performance over a programmable range of gains and wide
signal levels, and has a linear-phase response up to one half of
the -3dB frequency. The CLC451’s internal feedback network
provides an excellent gain accuracy of 0.3%

The CLC451 offers superior dynamic performance with a 85MHz
small-signal bandwidth, 260V/µs slew rate and 6.5ns rise/fall
times (2V

step

). The combination of the small SOT23-5 package,
low quiescent power, high output current drive, and high-speed
performance make the CLC451 well suited for many battery­powered personal communication/computing systems.

The ability to drive low-impedance, highly capacitive loads,
makes the CLC451 ideal for single ended cable applications. It
also drives low impedance loads with minimum distortion. The
CLC451 will drive a 100Ω load with only -78/-65dBc second/third
harmonic distortion (Av= +2, V

out

= 2Vpp, f = 1MHz). With a 25Ω
load, and the same conditions, it produces only -55/-60dBc sec­ond/third harmonic distortion. It is also optimized for driving high
currents into single-ended transformers and coils.

When driving the input of high-resolution A/D converters, the
CLC451 provides excellent -66/-75dBc second/third harmonic
distortion (Av= +2, V

out

= 2Vpp, f = 1MHz, RL= 1kΩ) and fast

settling time.

Maximum Output Voltage vs. R

L

Output Voltage (V

pp

)

RL (Ω)

1

2

3

4

5

6

7

8

9

10

10

100

1000

Vs = +5V

VCC = ±5V

CLC451
Single Supply, Low-Power, High Output,
Programmable Buffer

N

June 1999

CLC451

Single Supply, Low-Power, High Output, Programmable Buffer

Response After 10m of Cable

100mV/div

20ns/div

Vin = 10MHz, 0.5V

pp

V

inv

V

CC

V

EE

V

o

V

non-inv

1kΩ

1kΩ

+-

Pinout

SOT23-5

© 1999 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
Ambient T emper ature CLC451AJ +25°C +25°C 0 to 70°C -40 to 85°C

FREQUENCY DOMAIN RESPONSE

-3dB bandwidth V

o

= 0.5V

pp

85 60 55 55 MHz

V

o

= 2.0V

pp

70 55 50 45 MHz

-

0.1dB bandwidth Vo= 0.5V

pp

20 15 13 13 MHz

gain peaking <200MHz, V

o

= 0.5V

pp

0 0.5 0.9 1.0 dB

gain rolloff <30MHz, V

o

= 0.5V

pp

0.2 0.5 0.7 0.7 dB

linear phase deviation <30MHz, V

o

= 0.5V

pp

0.1 0.4 0.5 0.5 deg

TIME DOMAIN RESPONSE

rise and fall time 2V step 6.5 9.0 9.7 10.5 ns
settling time to 0.05% 1V step 25 – – – ns
overshoot 2V step 13 15 18 18 %
slew rate 2V step 260 180 165 150 V/µs

DISTORTION AND NOISE RESPONSE

2

nd

harmonic distortion 2Vpp, 1MHz -78 -72 -70 -70 dBc

2V

pp

, 1MHz; RL= 1kΩ -66 -60 -58 -58 dBc

2V

pp

, 5MHz -60 -54 -52 -52 dBc

3

rd

harmonic distortion 2Vpp, 1MHz -65 -61 -59 -59 dBc

2V

pp

, 1MHz; RL= 1kΩ -75 -69 -67 -67 dBc

2V

pp

, 5MHz -52 -48 -46 -46 dBc

equivalent input noise

voltage (e

ni

) >1MHz 3.0 3.7 4 4 nV/√Hz

non-inverting current (i

bn

) >1MHz 6.9 9 10 10 pA/√Hz

inverting current (i

bi

) >1MHz 8.5 11 12 12 pA/√Hz

STATIC DC PERFORMANCE

input offset voltage 8 30 37 37 mV A

average drift 80 – – – µV/˚C

input bias current (non-inverting) 3 14 17 18 µAA

average drift 25 – – – nA/˚C

gain accuracy ±0.3 ±1.5 ±2.0 ±2.0 % A

internal resistors (R

f

, Rg) 1000 ±20% ±26% ±30% Ω
power supply rejection ratio DC 49 46 44 44 dB
common-mode rejection ratio DC 51 48 46 46 dB
supply current R

L

= ∞ 1.5 1.7 1.8 1.8 mA A

MISCELLANEOUS PERFORMANCE

input resistance (non-inverting) 0.5 0.37 0.33 0.33 MΩ
input capacitance (non-inverting) 1.5 2.3 2.3 2.3 pF
input voltage range, High 4.2 4.1 4.0 4.0 V
input voltage range, Low 0.8 0.9 1.0 1.0 V
output voltage range, High R

L

= 100Ω 4.0 3.9 3.8 3.8 V

output voltage range, Low R

L

= 100Ω 1.0 1.1 1.2 1.2 V

output voltage range, High R

L

= ∞ 4.1 4.0 4.0 3.9 V

output voltage range, Low R

L

= ∞ 0.9 1.0 1.0 1.1 V
output current 100 80 65 40 mA B
output resistance, closed loop DC 400 600 600 600 mΩ

Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.

+5V Electrical Characteristics

(Av= +2, RL= 100Ω,Vs= +5V1,Vcm= VEE+ (Vs/2), RLtied to Vcm, unless specified)

Absolute Maximum Ratings

supply voltage (VCC- VEE)

+

14V
output current (see note C) 140mA
common-mode input voltage

VEEto

V

CC

maximum junction temperature +150°C
storage temperature range -65°C to +150°C
lead temperature (soldering 10 sec) +300°C
ESD rating (human body model) 500V

Notes

A) J-level:spec is 100% tested at +25°C.
B)The short circuit current can exceed the maximum safe

output current.

1) V

s

= VCC- V

EE

Reliability Information

Transistor Count 49
MTBF (based on limited test data) 31Mhr

3 http://www.national.com

PARAMETERS CONDITIONS TYP GUARANTEED MIN/MAX UNITS NOTES
Ambient T emper ature CLC451AJ +25°C +25°C 0 to 70°C -40 to 85°C

FREQUENCY DOMAIN RESPONSE

-3dB bandwidth V

o

= 1.0V

pp

100 80 68 65 MHz

V

o

= 4.0V

pp

55 45 42 40 MHz

-

0.1dB bandwidth Vo= 1.0V

pp

20 15 13 13 MHz

gain peaking <200MHz, V

o

= 1.0V

pp

0 0.5 0.9 1.0 dB

gain rolloff <30MHz, V

o

= 1.0V

pp

0.2 0.7 0.8 0.8 dB

linear phase deviation <30MHz, V

o

= 1.0V

pp

0.1 0.3 0.4 0.4 deg

differential gain NTSC, R

L

=150Ω 0.3 – – – %

differential phase NTSC, R

L

=150Ω 0.3 – – – deg

TIME DOMAIN RESPONSE

rise and fall time 2V step 5.0 6.5 7.0 7.7 ns
settling time to 0.05% 2V step 20 – – – ns
overshoot 2V step 10 13 15 15 %
slew rate 2V step 350 260 240 220 V/µs

DISTORTION AND NOISE RESPONSE

2

nd

harmonic distortion 2Vpp, 1MHz -72 -66 -64 -64 dBc

2V

pp

, 1MHz; RL= 1kΩ -69 -63 -61 -61 dBc

2V

pp

, 5MHz -66 -60 -58 -58 dBc

3

rd

harmonic distortion 2Vpp, 1MHz -65 -61 -59 -59 dBc

2V

pp

, 1MHz; RL= 1kΩ -73 -67 -65 -65 dBc

2V

pp

, 5MHz -52 -48 -46 -46 dBc

equivalent input noise

voltage (e

ni

) >1MHz 3.0 3.7 4 4 nV/√Hz

non-inverting current (i

bn

) >1MHz 6.9 9 10 10 pA/√Hz

inverting current (i

bi

) >1MHz 8.5 11 12 12 pA/√Hz

STATIC DC PERFORMANCE

output offset voltage 3 30 35 35 mV

average drift 80 – – – µV/˚C

input bias current (non-inverting) 1 12 19 19 µA

average drift 40 – – – nA/˚C

gain accuracy ±0.3 ±1.5 ±2.0 ±2.0 %

internal resistors (R

f

, Rg) 1000 ±20% ±26% ±30% Ω
power supply rejection ratio DC 48 45 43 43 dB
common-mode rejection ratio DC 53 50 48 48 dB
supply current R

L

= ∞ 1.6 1.9 2.0 2.0 mA

MISCELLANEOUS PERFORMANCE

input resistance (non-inverting) 0.7 0.50 0.45 0.45 MΩ
input capacitance (non-inverting) 1.2 1.8 1.8 1.8 pF
common-mode input range

±

4.2

±

4.1

±

4.1

±

4.0 V

output voltage range R

L

= 100Ω

±

3.8

±

3.6

±

3.6

±

3.5 V

output voltage range R

L

= ∞

±

4.0

±

3.8

±

3.8

±

3.7 V
output current 130 100 80 50 mA B
output resistance, closed loop DC 400 600 600 600 mΩ

±5V Electrical Characteristics

(Av= +2, RL= 100Ω,VCC= ±5V, unless specified)

Notes

B)The short circuit current can exceed the maximum safe

output current.

Ordering Information

Model Temperature Range Description

CLC451AJP -40°C to +85°C 8-pin PDIP
CLC451AJE -40°C to +85°C 8-pin SOIC
CLC451AJM5 -40°C to +85°C 5-pin SOT
CLC451ALC -40°C to +85°C dice

Pac kage Thermal Resistance

Package

θθ

JC

θθ

JA

Plastic (AJP) 105°C/W 155°C/W
Surface Mount (AJE) 95°C/W 175°C/W
Surface Mount (AJM5) 140°C/W 210°C/W
Dice (ALC) 25°C/W –

http://www.national.com 4

+5V T ypical P erformance

(Av= +2, RL= 100Ω,Vs= +5V1,Vcm= VEE+ (Vs/2), RLtied to Vcm, unless specified)

Frequency Response

Normalized Magnitude (1dB/div)

Frequency (Hz)

10M

Vo = 0.5V

pp

Phase (deg)

-225

-180

-135

-90

-45

0

100M1M

Av = 1

Av = -1

Av = 2

Av = 1

Av = 2

Av = -1

Gain

Phase

Frequency Response vs. R

L

Magnitude (1dB/div)

Frequency (Hz)

10M

Vo = 0.5V

pp

Phase (deg)

-450

-360

-270

-180

-90

0

100M1M

RL = 1kΩ

RL = 100Ω

RL = 25Ω

RL = 1kΩ

RL = 100Ω

RL = 25Ω

Gain

Phase

Frequency Response vs. Vo (Av = 2)

Magnitude (1dB/div)

Frequency (Hz)

10M

100M1M

Vo = 1V

pp

Vo = 2V

pp

Vo = 0.1V

pp

Vo = 2.5V

pp

Frequency Response vs. Vo (Av = +1)

Magnitude (1dB/div)

Frequency (Hz)

10M

100M1M

Vo = 1V

pp

Vo = 2V

pp

Vo = 0.1V

pp

Vo = 2.5V

pp

Frequency Response vs. Vo (Av = -1)

Magnitude (1dB/div)

Frequency (Hz)

10M

100M1M

Vo = 1V

pp

Vo = 2V

pp

Vo = 0.1V

pp

Vo = 2.5V

pp

Frequency Response vs. C

L

Magnitude (1dB/div)

Frequency (Hz)

1M

10M

100M

Vo = 0.5V

pp

CL = 10pF

Rs = 49.9Ω

CL = 100pF

Rs = 21Ω

CL = 1000pF

Rs = 6.7Ω

C

L

1k

R

s

+

-

1k

1k

Gain Flatness

Magnitude (0.05dB/div)

Frequency (MHz)

10

20

30

Vo = 0.5V

pp

Equivalent Input Noise

Noise Voltage (nV/√Hz)

Frequency (Hz)

4

3.5

0.1k 1k 10k 100k 1M 10M

3

2.5

Non-Inverting Current 6.9pA/√Hz

Inverting Current 8.5pA/√Hz

Voltage 3.0nV/√Hz

Noise Current (pA/√Hz)

10

11

12

9

6

8

7

2nd & 3rd Harmonic Distortion

Distortion (dBc)

Frequency (Hz)

1M

10M

Vo = 2V

pp

-90

-80

-70

-60

-50

-40

2nd

RL = 1kΩ

2nd

RL = 100Ω

3rd

RL = 100Ω

3rd

RL = 1kΩ

2nd Harmonic Distortion, RL = 25Ω

Distortion (dBc)

Output Amplitude (Vpp)

0 0.5 1 1.5 2 2.5

-25

-30

-35

-40

-45

-50

-55

2MHz

5MHz

10MHz

1MHz

3rd Harmonic Distortion, RL = 25Ω

Distortion (dBc)

Output Amplitude (Vpp)

0 0.5 1 1.5 2 2.5

-20

-30

-40

-50

-60

2MHz

5MHz

10MHz

1MHz

2nd Harmonic Distortion, RL = 100Ω

Distortion (dBc)

Output Amplitude (Vpp)

0 0.5 1 1.5 2 2.5

-55

-60

-65

-70

-75

-80

-85

-90

2MHz

5MHz

10MHz

1MHz

3rd Harmonic Distortion, RL = 100Ω

Distortion (dBc)

Output Amplitude (Vpp)

0 0.5 1 1.5 2 2.5

-30

-35

-40

-45

-50

-55

-60

-65

-70

2MHz

5MHz

10MHz

1MHz

2nd Harmonic Distortion, RL = 1kΩ

Distortion (dBc)

Output Amplitude (Vpp)

0 0.5 1 1.5 2 2.5

-60

-65

-70

-75

-80

-85

2MHz

5MHz

10MHz

1MHz

3rd Harmonic Distortion, RL = 1kΩ

Distortion (dBc)

Output Amplitude (Vpp)

0 0.5 1 1.5 2 2.5

-50

-55

-60

-65

-70

-75

-80

-85

2MHz

5MHz

10MHz

1MHz