NSC CLC449MDC, CLC449AMC, CLC449AJP, CLC449AJE-TR13, CLC449AJE Datasheet

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Features

■

1.1GHz small-signal bandwidth (Av= +2)

■

2500V/µs slew rate

■

0.03%, 0.02° DG, D

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6ns settling time to 0.2%

■

3rd order intercept, 30dBm @ 70MHz

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Dual ±5V or single 10V supply

■

High output current: 90mA

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2.5dB noise figure

Applications

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High performance RGB video

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RF/IF amplifier

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Instrumentation

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Medical electronics

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Active filters

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High-speed A/D driver

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High-speed D/A buffer

Typical Application

120MSPS High-Speed Flash ADC Driver

Pinout

DIP & SOIC

General Description

The CLC449 is an ultra-high-speed monolithic op amp, with a typical -3dB bandwidth of 1.1GHz at a gain of +2. This wideband op amp supports rise and fall times less than 1ns, settling time of 6ns (to 0.2%) and slew rate of 2500V/µs.The CLC449 achieves 2nd harmonic distortion of -68dBc at 5MHz at a low supply current of only 12mA. These performance advantages have been achieved through improvements in National’s proven current feedback topology combined with a high-speed complementary bipolar process.

The DC to 1.2GHz bandwidth of the CLC449 is suitable for many IF and RF applications as a versatile op amp building bloc k for replacement of AC coupled discrete designs. Operational amplifier functions such as active filters, gain blocks, differentiation, addition, subtraction and other signal conditioning functions take full advantage of the CLC449’s unity-gain stable closed-loop performance.

The CLC449 performance provides greater headroom for lower frequency applications such as component video, high-resolution workstation graphics, and LCD displays. The amplifier’s 0.1dB gain flatness to beyond 200MHz, plus 0.8ns 2V rise and fall times are ideal for improved time domain performance. In addition, the 0.03%/0.02° differential gain/phase performance allows system flexibility for handling standard NTSC and PAL signals.

In applications using high-speed flash A/D and D/A converters, the CLC449 provides the necessary wide bandwidth (1.1GHz), settling (6ns to 0.2%) and low distortion into 50Ω loads to improve SFDR.

Frequency Response (Av = +2V/V)

CLC449

1.1GHz Ultra-Wideband Monolithic Op Amp

June 1999

CLC449

1.1GHz Ultra-Wideband Monolithic Op Amp

Printed in the U.S.A.

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PARAMETERS CONDITIONS TYP MIN/MAX RATINGS UNITS NOTES

CLC449 +25° +25° 0° to +70° -40° to +85°

FREQUENCY DOMAIN RESPONSE

-3dB bandwidth small signal <0.2V

1100 MHz

large signal <2V

500 380 380 360 MHz

±0.1 dB bandwidth <2V

200 MHz

gain flatness

peaking DC to 200MHz 0 dB rolloff DC to 200MHz 0.1 0.5 0.5 0.5 dB

linear phase deviation <200MHz 0.8 deg differential gain 4.43MHz, R

=150Ω 0.03 0.05 0.05 0.05 %

differential phase 4.43MHz, R

=150Ω 0.02 0.02 0.05 0.05 deg

TIME DOMAIN RESPONSE

rise and fall time 2V step 0.8 1.1 1.1 1.1 ns settling time to 0.2% 2V step 6 ns settling time to 0.1% 2V step 11 ns overshoot 2V step 10 18 18 18 % slew rate 4V step 2500 2000 2000 2000 V/µs

DISTORTION AND NOISE RESPONSE

2nd harmonic distortion 2V

, 5MHz -63 59 59 59 dBc

, 20MHz -52 -48 -48 -48 dBc

, 50MHz -44 40 40 40 dBc

3rd harmonic distortion 2V

, 5MHz -84 77 75 75 dBc

, 20MHz -73 -66 -64 -64 dBc

, 50MHz -62 55 53 53 dBc 3rd order intercept 70MHz 30 dBm 1dB gain compression @ 50MHz 16 dBm equivalent input noise

non-inverting voltage 1MHz 2.2 2.9 nV/√Hz inverting current 1MHz 15 20.0 pA/√Hz non-inverting current 1MHz 3 5.0 pA/√Hz

STATIC DC PERFORMANCE

input offset voltage 3 7 9 9 mV A

average drift 25 µV/°C

input bias current non-inverting 6 30 45 60 µAA

average drift 50 nA/°C

input bias current inverting 2 20 25 40 µAA

average drift 25 nA/°C power supply rejection ratio DC 48 43 41 41 dB A common-mode rejection ratio DC 47 44 45 46 dB supply current R

= ∞ 12 13.5 14 14 mA A

MISCELLANEOUS PERFORMANCE

input resistance non-inverting 400 200 200 150 kΩ input capacitance non-inverting 1.3 pF output resistance closed loop 0.1 0.15 0.15 0.25 Ω output voltage range R

= ∞ 3.3 3.1 3.1 3.1 V

=100Ω 2.9 2.8 2.8 2.8 V input voltage range common-mode 2.4 2.2 2.1 1.9 V output current 80 60 50 40 mA

CLC449 Electrical Characteristics

(Av= +2, Rf= 250

ΩΩ,,

Vcc= ±5V, RL= 100ΩΩ; unless specified)

Absolute Maximum Ratings

±6V

out

is short circuit protected to ground

common-mode input voltage ±V

maximum junction temperature +150°C operating temperature range

AJ -40°C to +85°C storage temperature range -65°C to +150°C lead temperature (soldering 10 sec) +300°C ESD (human body model) 500V

Notes

A) J-level:spec is 100% tested at +25°C.

Pac kage Thermal Resistance

Package θ

Plastic (AJP) 90°C/W 105°C/W Surface Mount (AJE) 110°C/W 130°C/W

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

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10k 100k 1M 10M 100M

Magnitude (3dB/div)

20 log|Z| (dBΩ)

Distortion (dBc)

Noise Voltage (nV/√Hz), Current (pA/√Hz)

Frequency (Hz)

PSRR/CMRR (dB)

Magnitude (3dB/div)

Phase (deg)

Distortion (dBc)

Phase

(deg)

Distortion (dBc)

-3dB Bandwidth (MHz)

out

(ohms)

Time (1ns/div)Time (1ns/div)

D.G. (%), D.P. (deg)

Magnitude (0.1dB/div)

Intercept Point (dBm)

Phase (deg)

Magnitude (3dB/div)

Phase (deg) Phase (1deg/div)

PSRR

Po = 10dBm

100M0.1M 1M 10M

0.1k

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

0.1M 1M 10M 100M

180 160

CLC449 Typical Performance Characteristics

(TA= 25°C,Vcc= + 5V,Rf= 250Ω,Av= +2, RL= 100Ω)

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CLC449 Typical Performance Characteristics

(TA= 25°C,Vcc= + 5V,Rf= 250Ω,Av= +2, RL= 100Ω)

CLC449 OPERATION

Magnitude (1dB/div)

Input Offset Voltage, V

(mV)

Input Bias Current, I

, I

(µA)

Settling Time (ns)

(ohms)

VSWR

Frequency (Hz)

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

0.9

Input VSWR

Non-Inverting

Inverting

0 100M 200M 300M 400M 500M

VSWR

Frequency (Hz)

2.8

2.6

2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

Uncompensated

Compensated

0 100M 200M 300M 400M 500M

| (dB)

Frequency (Hz)

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100 0 100M 200M 300M 400M 500M

Output VSWR Reverse Isolation (S12)

Gain Compression

CLC449 Extended Application Information

The following design and application topics will supply you with:

•

A comprehensive set of design parameters and design parameter adjustment techniques.

•

A set of formulas that support design parameter change prediction.

•

A series of common applications that the CLC449 supports.

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A set of easy to use design guidelines for the CLC449.

Additional design applications are possible with the CLC449. If you have application questions, call 1-800-2729959 in the U.S.to contact a technical staff member.

DC Gain (Non-Inverting)

The non-inverting DC voltage gain for the configuration shown in Figure 1 is:

Figure 1: Non-Inver ting Gain

The normalized gain plots in the

Typical Performance

Characteristics

section show different feedback resistors, Rf, for different gains. These values of Rfare recommended for obtaining the highest bandwidth with minimal peaking. The resistor Rtin Figure 1 provides DC bias for the non-inverting input.

For Av≤ 5, calculate the recommended Rfas follows: Rf≅ 340 - A

•

Ri, where Ri= 45Ω.For Av> 5, the

minimum recommended feedback resistor is Rf = 100Ω.

Select Rgto set the DC gain:

Accuracy of DC gain is usually limited by the tolerance of the external resistors Rfand Rg.

DC Gain (Unity Gain Buffer)

Unity gain buffers are easily designed with a currentfeedback amplifier as long as the recommended feedback resistor Rf= 402Ω is used and Rg= ∞, i.e. open. Parasitic capacitance at the in verting node may require a slight increase of the feedback resistor Rfto maintain a flat frequency response.

DC Gain (Inverting)

The inverting DC voltage gain for the configur ation shown in Figure 2 is:

CLC449

0.1µF 6.8µF V

0.1µF 6.8µF

−

=−

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