NSC CLC407MDC, CLC407AMC Datasheet

Frequency Response (AV = +2V/V)

Features

■

Low-cost

■

High output current: 60mA

■

High input impedance: 6MΩ

■

Gains of +1, +2 with no external components

■

Low power: Icc= 3.5mA

■

Ultra-fast enable/disable times

■

Very low input bias currents: 100nA

■

Excellent gain accuracy: 0.1%

■

High speed: 110MHz -3dB BW

Applications

■

Desktop video systems

■

Multiplexers

■

Video distribution

■

Flash A/D driver

■

High-speed switch/driver

■

High-source impedance applications

■

Peak detector circuits

■

Professional video processing

■

High resolution monitors

NOTE: All necessary components are shown.

Typical Application

2:1 Mux Cable Driver

Pinout

DIP & SOIC

General Description

The Comlinear CLC407 is a low-cost, high-speed (110MHz) buffer which features user-programmable gains of +2, +1, and -1 V/V. This high-performance part has the added versatility of a TTL-compatible disable which quickly switches the buffer off in 18ns and back on in 40ns. The CLC407’s high 60mA output current, coupled with its ultra-low 35mW power consumption makes it the ideal choice for demanding applications that are sensitive to both power and cost.

Utilizing Comlinear’s proven architectures, this current feedback amplifier surpasses the performance of alternate solutions with a closed-loop design that produces new standards for buffers in gain accuracy, input impedance, and input bias currents. The CLC407’s internal feedback network provides an excellent gain accuracy of 0.1%. High source impedance applications will benefit from the CLC407’s 6MΩ input impedance along with its exceptionally low 100nA input bias current.

With 0.1dB flatness to 30MHz and low differential gain and phase errors, the CLC407 is very useful for professional video processing and distribution. A 110MHz -3dB bandwidth coupled with a 350V/µs slew rate also make the CLC407 a perfect choice in cost-sensitive applications such as video monitors, fax machines, copiers, and CATV systems. Back-terminated video applications will especially appreciate +2 gains which require no external gain components reducing inventory costs and board space.

Comlinear CLC407 Low-Cost, Low-Power Programmable Gain Buffer with Disable

August 1996

Comlinear CLC407

Low-Cost, Low-Power, Programmable Gain Buffer with Disable

Printed in the U.S.A.

PARAMETERS CONDITIONS TYP MIN/MAX RATINGS UNITS NOTES Ambient Temperature CLC407AJ +25˚C +25˚C 0 to 70˚C -40 to 85˚C

FREQUENCY DOMAIN RESPONSE

-3dB bandwidth V

out

< 1.0V

110 75 50 45 MHz B

out

< 5.0V

42 31 27 26 MHz 1

0.1dB bandwidth V

out

< 1.0V

30 15 MHz

gain flatness V

out

< 1.0V

peaking DC to 200MHz 0 0.4 0.6 0.8 dB B

rolloff <30MHz 0.1 0.5 0.65 0.7 dB B linear phase deviation <20MHz 0.3 0.6 0.7 0.7 deg differential gain NTSC, RL=150Ω 0.03 0.05 0.06 0.07 %

NTSC, RL=150Ω

(Note 2)

0.01 % 2

differential phase NTSC, RL=150Ω 0.25 0.4 0.5 0.55 deg

NTSC, RL=150Ω

(Note 2)

0.08 deg 2

TIME DOMAIN RESPONSE

rise and fall time 2V step 5 7.5 8.2 8.4 ns settling time to 0.05% 2V step 18 27 36 39 ns overshoot 2V step 3 12 12 12 % slew rate AV = +2 2V step 350 260 225 215 V/µs

AV = -1 1V step 650 V/µs

DISTORTION AND NOISE RESPONSE

2nd harmonic distortion 2Vpp, 1MHz/10MHz -72/-52 -46 -45 -44 dBc B, C 3rd harmonic distortion 2V

, 1MHz/10MHz -70/-57 -50 -47 -46 dBc B, C

equivalent input noise

non-inverting voltage >1MHz 5 6.3 6.6 6.7 nV/√Hz

inverting current >1MHz 12 15 16 17 pA/√Hz

non-inverting current >1MHz 3 3.8 4 4.2 pA/√Hz

STATIC DC PERFORMANCE

input offset voltage 1 5 7 8 mV

average drift 30 50 50 µV/˚C input bias current non-inverting 100 900 1600 2800 nA A

average drift 3 8 11 nA/˚C input bias current inverting 1 5 6 8 µA

average drift 17 40 45 nA/˚C output offset voltage 2.5 13 17 19 mV A,3 amplifier gain error

0.1%

1.0%

1.0% V/V A

internal feedback resistor (R

) 250

20% Ω power supply rejection ratio DC 52 47 46 45 dB B common-mode rejection ratio DC 50 45 44 43 dB supply current R

= ∞ 3.5 4.0 4.1 4.4 mA A

disabled R

= ∞ 0.8 0.9 0.95 1 mA A

SWITCHING PERFORMANCE

turn on time 40 55 58 58 ns turn off time to >50dB attn. @ 10MHz 18 26 30 32 ns off isolation 10MHz 85 80 80 80 dB high input voltage V

222V

low input voltage V

0.8 0.8 0.8 V

MISCELLANEOUS PERFORMANCE

input resistance non-inverting 6 3 2.4 1 MΩ input capacitance non-inverting 1 2 2 2 pF common mode input range ±2.2 1.8 1.7 1.5 V output voltage range R

= ∞ +4.0,-3.3 +3.9,-3.2 +3.8,-3.1 +3.7,-2.8 V output current 60 44 38 20 mA output resistance, closed loop 0.06 0.2 0.25 0.4 Ω

Recommended gain range +1, +2 V/V Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters.

CLC407 Electrical Characteristics

(AV= +2, Vcc= + 5V, RL= 100Ω unless specified)

Absolute Maximum Ratings

supply voltage

out

is short circuit protected to ground

common-mode input voltage

Vcc maximum junction temperature +175˚C storage temperature range -65˚C to +150˚C lead temperature (soldering 10 sec) +300˚C

Notes

1) At temps < 0˚C, spec is guaranteed for RL= 500Ω.

2) An 825Ω pull-down resistor is connected between V

and -Vcc.

3) Source impedance 1kΩ. A) J-level: spec is 100% tested at +25˚C, sample tested at +85˚C.

LC/MC-level: spec is 100% wafer probed at +25˚C. B)J-level: spec is sample tested at +25˚C. C)Guaranteed at 10MHz.

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CLC407 Typical Performance Characteristics

(AV= +2, Rf= 250Ω: Vcc= + 5V, RL= 100Ω unless specified)

Frequency Response

Magnitude (1dB/div)

Phase (45

/div)

100

Frequency (MHz)

Gain

Phase

AV+1

AV-1

AV -1

Frequency Response vs. R

Magnitude (1dB/div)

Phase (deg)

-180

-90

-135

-45

100

Frequency (MHz)

Gain

Phase

RL =50

RL =100

RL =1k

RL =50

RL =100

RL =1k

Frequency Response vs. V

out (Av

= +2)

Magnitude (1dB/div)

Phase (deg)

-180

-90

-135

-45

100

Frequency (MHz)

Gain

Phase

VO =1V

VO =0.2V

VO =5V

VO =2V

VO =5V

VO =0.2V

VO =1V

VO =2V

Frequency Response vs. V

out (Av

= +1)

Magnitude (1dB/div)

Phase (deg)

-180

-90

-135

-45

100

Frequency (MHz)

Gain

Phase

VO =1V

VO =0.2V

VO =2V

VO =4V

VO =2V

VO =4V

VO =1V

VO =0.2V

Frequency Response vs. V

out (Av

= -1)

Magnitude (1dB/div)

Phase (deg)

-360

-270

-315

-225

-180

100

Frequency (MHz)

Gain

Phase

VO =1V

VO =0.2V

VO =2V

VO =4V

VO =2V

VO =4V

VO =1V

VO =0.2V

Frequency Response vs. Capacitive Load

Magnitude (1dB/div)

Phase (deg)

-180

-90

-135

-45

100

Frequency (MHz)

Gain

Phase

CL =1kpF

Rs=10

CL =100pF

Rs= 30

CL =10pF

Rs=100

CL =1kpF

CL =100pF



CL =10pF



Maximum Output Voltage vs. R

Maximum Output Voltage (V

)

Load (Ω)

7.0

6.0

5.0

4.0

3.0

2.0 1000200

300

400

500

Gain Flatness & Linear Phase Deviation

Magnitude (0.1dB/div)

LPD (0.5

/div)

Frequency (MHz)

Gain

Phase

Equivalent Input Noise

Noise Voltage (nV/√Hz)

Frequency (Hz)

100

10k

100k

10M

Noise Current (pA/√Hz)

100



Inverting Current = 12pA/√Hz

Voltage = 5nV/√Hz

Non-Inverting Current = 3pA/√Hz

2nd & 3rd Harmonic Distortion

Distortion (dBc)

Frequency (MHz)

-40

-50

-90

0.1

-70

-80

-60

3rd Rl = 100

2nd Rl = 1k

3rd Rl = 1k

2nd Rl = 100

Vo = 2V

2nd Harmonic Distortion vs. P

out

Distortion (dBc)

Output Power (dBm)

-45

-55

-85

-10

-65

-75

500KHz

1MHz

5MHz

10MHz

10dBm = 2V

0dBm = .63Vpp

50Ω

Pout

3rd Harmonic Distortion vs. P

out

Distortion (dBc)

Output Power (dBm)

-45

-55

-85

-10

-65

-75

10dBm = 2V

0dBm = .63Vpp

50Ω

out

500KHz

1MHz

5MHz

10MHz

Output Resistance vs. Frequency

Output Resistance (20log Z

out

)

Frequency (MHz)

100



-10

-30

-50

Forward & Reverse Isolation During Disable

Gain (dB)

100

Frequency (MHz)

Forward

Reverse

-20

-40

-60

-80

-100

-120

Differential Gain & Phase

Differential Gain (%)

Number of 150Ω Loads

0.20

0.15

0.10

0.05

Differential Phase (deg)

1.00

0.75

0.50

0.25

Phase

Gain

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