Ver.13

- 1 -

NJM2574

LOW VOLTAGE VIDEO AMPLIFIER WITH LPF GENRERAL DESCRIPTION PACKAGE OUTLINE

The NJM2574 is a Low Voltage Video Amplifier contained LPF circuit, 75Ω driver and internal CLAMP/BIAS SW, LPF/through SW to connect TV monitor directly.

The input signal is composite signal (0.5Vpp). The mute circuit with power save function is suitable for low power design.

The NJM2574 is suitable for down sizing of Digital Steel Camera, and DVC for small package.

FEATURES Operating Voltage 2.8 to 5.5V Input Composite Signal 0.5Vpp 12dB Amplifier 75Ω Driver Internal CLAMP/BIAS SW Internal LPF/through SW Operating Current 9.0mA typ. at Vcc=3.0V Operating Current in Battery Saving 70µA typ. at Vcc=3.0V Bipolar Technology Package Outline MSOP8 (TVSP8)*

*MEET JEDEC MO-187-DA / THIN TYPE BLOCK DIAGRAM

CLAMP/BIAS

LPF

BIASCLAMP

Vin

SW

V+

12dB 75ΩDriver

Power SaveGND

LPF/ThroughSW

Vout

Vsag

4

3

72

8

6

1 5

NJM2574RB1 ( MSOP8 (TVSP8) )

- 2 -

NJM2574 ABSOLUTE MAXIMUM RATINGS (Ta=25°C)

PARAMETER SYMBOL RATINGS UNIT Supply Voltage V+ 7.0 V Power Dissipation PD 320 mW Operating Temperature Range Topr -40 to +85 °C Storage Temperature Range Tstg -40 to +125 °C

ELECTRICAL CHARACTERISTICS (V+=3.0V,RL=150Ω,Ta=25°C)

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT

Operating Voltage Vopr 2.8 3.0 5.5 V Operating Current ICC No Signal - 9.0 10.0 mA Operating Current at Power Save Isave Power Save Mode - 70 90 µA

Vomv f=1kHz,THD=1%,CLAMP MODE LPF MODE 2.2 2.7 -

Maximum Output Voltage Swing Vom RGB

f=1kHz,THD=1%, BIAS MODE, through MODE 1.4 2.0 -

Vp-p

Voltage Gain Gv Vin=100kHz,0.5Vp-p, Input Sine Signal 12.0 12.4 12.8 dB

Frequency Characteristic (Through MODE) Gf Vin=20MHz/100kHz,0.5Vp-p -6.0 -3.0 - dB

Gfy4.5M Vin=4.5MHz/100kHz,0.5Vp-p -0.95 -0.45 0.05

Gfy8M Vin=8MHz/100kHz,0.5Vp-p - -3.0 - Low Pass Filter Characteristic

Gfy23.5M Vin=23.5MHz/100kHz,0.5Vp-p - -23 -17

dB

Differential Gain DG Vin=0.5Vp-p, Input 10step Video Signal - 0.5 - %

Differential Phase DP Vin=0.5Vp-p, Input 10step Video Signal - 0.5 - deg

S/N SNv Vin=0.5Vp-p, 100% White Video Signal, RL=75ΩBand Width 100kHz to 6MHz

- 60 - dB

2nd. Distortion Hv Vin=0.5Vp-p, 3.58MHz, Sine Video Signal, RL=75Ω, - -60 - dB

SW Change Voltage High Level VthH 1.8 - V+ SW Change Voltage Low Level VthL 0 - 0.3

V

CONTROL TERMINAL

PARAMETER STATUS NOTE

H Power Save : OFF L Power Save : ON (Mute) Power Save(7pin)

OPEN Power Save : ON (Mute) H LPF MODE L Through MODE LPF/Through SW(1pin)

OPEN Through MODE H CLAMP MODE L BIAS MODE CLAMP/BIAS SW(8pin)

OPEN BIAS MODE

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NJM2574 TEST CIRCUIT

75Ω

++22µF 100µF

75Ω

75Ω

0.1µF

1 2 3 4

8 7 6 5

NJM2574

GND

Vout

Vsag

V+

VinPower save

CLAMP/BIAS SW

LPF/Through SW

0.1µF

10µF+

- 4 -

NJM2574 APPLICATION CIRCUIT (1) Standard circuit (2) SAG correction unused circuit (3) Two-line driving circuit (1) Standard circuit

This circuit is for a portable equipment of small mounting space. The SAG correction reduces output coupling capacitor values. However, this circuit may cause to SAG deterioration, and lose synchronization by luminance fluctuation. Adjust the C1 value, checking the waveform containing a lot of low frequency components like a bounce waveform (Worst condition waveform of SAG). Change the capacitor of C1 into a large value to improve SAG.

(2) SAG correction unused circuit

We recommend this circuit when there is no space limitation. Connect the coupling capacitor after connecting the Vout pin and Vsag pin. The recommended value is 470µF or more.

(3) Two-line driving circuit

This circuit drives two-line of 150Ω. However, it may cause to lose synchronization by an input signal of large APL change (100% white signals more than 1Vp-p). Confirm the large APL change waveform (100% white signals more than 1Vp-p) and evaluate sufficiently.

75Ω

++33µF 33µF

0.1µF

75Ω

10µF+

0.1µF

1 2 3 4

8 7 6 5

NJM2574

Vout

V+

Vin

C1

Power save

CLAMP/BIAS SW

LPF/Through SW

GND

75Ω

+470µF

0.1µF

75Ω

10µF+

0.1µF

1 2 3 4

8 7 6 5

NJM2574

Vout

V+

Vin

Power save

CLAMP/BIAS SW

LPF/Through SW

GND

75Ω

+470µF

0.1µF

75Ω

10µF+

0.1µF

1 2 3 4

8 7 6 5

NJM2574

GND

Vout1

V+

Vin

Power save

CLAMP/BIAS SW

75Ω

Vout2

LPF/Through SW

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NJM2574 APPLICATION (IC characteristic is not guaranteed)

When you use a power save terminal more than by 4.0V, please put resistance of about 20kΩ into a power save terminal.

Resistance is unnecessary in the following condition.

1. The power save terminal voltage (VthH) is less than 4.0V. 2. When you select "BIAS" at the power-supply voltage of 5V.

Example) PS(VthH) ≥ 4.0V PS(VthH) < 4.0V

Power Save

VPS(VthH)

VthH < 4.0V

Power Save

r

VPS(VthH)r ≅ 20kΩVthH ≥ 4.0V

- 6 -

NJM2574 TERMINAL DESCRIPTION

No SYMBOL EQUIVALENT CIRCUIT

1 LPF/Through SW

2 GND

3 Vsag

4 Vout

5 V+

48KΩ

32KΩ

V+

750Ω 25.3KΩ

V+

V+

750Ω 25.3KΩ

V+

- 7 -

NJM2574 TERMINAL DESCRIPTION

No SYMBOL EQUIVALENT CIRCUIT

6 Vin

7 PowerSave

8 CLAMP/BIAS SW

48KΩ

32KΩ

V+

270Ω 270Ω

V+

270Ω20KΩ

V+

32k

48k

GND

16k

16k

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NJM2574 TYPICAL CHARACTERISTICS

-40

-30

-20

-10

0

10

20

100 103 1 106 10 106

Voltage Gain vs. Freqency

Clamp+LPFBias+Through

Vol

tage

Gai

n G

v(dB

)

Frequency(Hz)

-40

-30

-20

-10

0

10

20

100 103 1 106 10 106

Voltage Gain vs. Freqency(Clamp+LPF Input)

Vol

tage

Gai

n G

v(dB

)

Frequency(Hz)

-40

-30

-20

-10

0

10

20

100 103 1 106 10 106

Voltage Gain vs. Freqency(Bias+Through Input)

Vol

tage

Gai

n G

v(dB

)

Frequency(Hz)

2.0

4.0

6.0

8.0

10.0

12.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Operating Current vs. Supply Voltage

Ope

ratio

ng C

urre

nt I

cc(m

A)

Supply Voltage V+(V)

0.0

20.0

40.0

60.0

80.0

100.0

120.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Operating Current at Standby State vs. Supply Voltage

Ope

ratin

g C

urre

nt a

t Sta

ndby

Sta

te I

save

(uA

)

Supply Voltage V+(V)

Condition: CLAMP+LPF INPUT

- 9 -

NJM2574 TYPICAL CHARACTERISTICS

0.0

1.0

2.0

3.0

4.0

5.0

6.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Maximum Output Voltage Swing vs. Supply Voltage(Clamp+LPF Type Input)

VinVomv

Max

imum

Out

put V

olta

ge S

win

g V

omv(

Vpp)

Supply Voltage V+(V)

Total Harmonic Distortion=1%, 1kHz

0.0

1.0

2.0

3.0

4.0

5.0

6.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Maximum Output Voltage Swing vs. Supply Voltage(Bias+Through Type Input)

VinVomRGB

Max

imum

Out

put V

olta

ge S

win

g V

omR

GB

(Vpp

)

Supply Voltage V+(V)

Total Harmonic Distortion=1%, 1kHz

11.0

11.5

12.0

12.5

13.0

13.5

14.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Voltage Gain vs. Supply Voltage

Vol

tage

Gai

n G

v(dB

)

Supply Voltage V+(V)

0.5Vpp, 100kHz sinewave signal input

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Gain Frequency Characteristics vs. Supply Voltage(Bias+Through Type Input)

Gai

n Fr

eque

ncy

Cha

ract

eris

tics

Gf(d

B)

Supply Voltage V+(V)

0.5Vpp, 20MHz/100kHz

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Low Pass Filter Characteristic 1 vs. Supply Voltage(Clamp+LPF Type Input)

LPF

Cha

ract

eris

tic 1

Gfy

4.5M

(dB

)

Supply Voltage V+(V)

0.5Vpp, 4.5MHz/100kHz

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Low Pass Filter Characteristic 2 vs. Supply Voltage(Clamp+LPF Type Input)

LPF

Cha

ract

eris

tic 2

Gfy

8M(d

B)

Supply Voltage V+(V)

0.5Vpp, 8MHz/100kHz

- 10 -

NJM2574 TYPICAL CHARACTERISTICS

-32.0

-30.0

-28.0

-26.0

-24.0

-22.0

-20.0

-18.0

-16.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Low Pass Filter Characteristic 3 vs. Supply Voltage(Clamp+LPF Type Input)

LPF

Cha

ract

eris

tic 3

Gfy

23.5

M(d

B)

Supply Voltage V+(V)

0.5Vpp, 23.5MHz/100kHz

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Differential Gain vs. Supply Voltage

Diff

eren

tial G

ain

DG

(%)

Supply Voltage V+(V)

0.5Vpp, 10step video signal input

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Differential Phase vs. Supply Voltage

Diff

eren

tial P

hase

DP

(deg

)

Supply Voltage V+(V)

0.5Vpp, 10step video signal input

40.0

50.0

60.0

70.0

80.0

90.0

100.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Signal to Noise Ratio vs. Supply VoltageS

igna

l to

Noi

se R

atio

SN

v(dB

)

Supply Voltage V+(V)

0.5Vpp, 100% white video signal input, 100kHz-6MHz

-100.0

-90.0

-80.0

-70.0

-60.0

-50.0

-40.0

-30.0

-20.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Second Harmonic Distortion vs. Supply Voltage

Sec

ond

Har

mon

ic D

isto

rtion

Hv(

dB)

Supply Voltage V+(V)

0.5Vpp, 3.58MHz sinewave signal input

0.0

0.5

1.0

1.5

2.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

Switching Voltage vs. Supply Voltage

VthHVthL

Sw

itchi

ng V

olta

ge V

th(V

)

Supply Voltage V+(V)

- 11 -

NJM2574 TYPICAL CHARACTERISTICS

5.0

6.0

7.0

8.0

9.0

10.0

11.0

-40 0 40 80 120

Operating Current vs. Temperature

Ope

ratio

ng C

urre

nt I

cc(m

A)

Ambient Temperature Ta(oC)

0.0

20.0

40.0

60.0

80.0

100.0

-40 0 40 80 120

Operating Current at Standby State vs. Temperature

Ope

ratin

g C

urre

nt a

t Sta

ndby

Sta

te I

save

(uA

)

Ambient Temperature Ta(oC)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

-40 0 40 80 120

Maximum Output Voltage Swing vs. Temperature(Clamp+LPF Type Input)

Max

imum

Out

put V

olta

ge S

win

g V

omv(

Vpp

)

Ambient Temperature Ta(oC)

Total Harmonic Distortion=1%, 1kHz

0.0

1.0

2.0

3.0

4.0

5.0

6.0

-40 0 40 80 120

Maximum Output Voltage Swing vs. Temperature(Bias+Through Type Input)

Max

imum

Out

put V

olta

ge S

win

g V

omR

GB(

Vpp

)

Ambient Temperature Ta(oC)

Total Harmonic Distortion=1%, 1kHz

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

-40 0 40 80 120

Gain Frequency Characteristics vs. Temperature (Bias+Through Type Input)

Gai

n Fr

eque

ncy

Cha

ract

eris

tics

Gf(d

B)

Ambient Temperature Ta(oC)

0.5Vpp, 20MHz/100kHz

0.0

0.5

1.0

1.5

2.0

2.0 3.0 4.0 5.0 6.0 7.0 8.0

PowerSave Switching Voltage vs. Supply Voltage

VthPHVthPL

Pow

erS

ave

Sw

itchi

ng V

olta

ge V

thP

(V)

Supply Voltage V+(V)

- 12 -

NJM2574 TYPICAL CHARACTERISTICS

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

-40 0 40 80 120

Low Pass Filter Characteristic 1 vs. Temperature (Clamp+LPF Type Input)

LPF

Cha

ract

eris

tic 1

Gfy

4.5M

(dB)

Ambient Temperature Ta(oC)

0.5Vpp, 4.5MHz/100kHz

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

-40 0 40 80 120

Low Pass Filter Characteristic 2 vs. Temperature (Clamp+LPF Type Input)

LPF

Cha

ract

eris

tic 2

Gfy

8M(d

B)

Ambient Temperature Ta(oC)

0.5Vpp, 8MHz/100kHz

-32.0

-30.0

-28.0

-26.0

-24.0

-22.0

-20.0

-18.0

-16.0

-40 0 40 80 120

Low Pass Filter Characteristic 3 vs. Temperature (Clamp+LPF Type Input)

LPF

Cha

ract

eris

tic 3

Gfy

23.5

M(d

B)

Ambient Temperature Ta(oC)

0.5Vpp, 23.5MHz/100kHz

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

-40 0 40 80 120

Differential Gain vs. Temperature

Diff

eren

tial G

ain

DG

(%)

Ambient Temperature Ta(oC)

0.5Vpp, 10step video signal input

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

-40 0 40 80 120

Differential Phase vs. Temperature

Diff

eren

tial P

hase

DP(

deg)

Ambient Temperature Ta(oC)

0.5Vpp, 10step video signal input

40.0

50.0

60.0

70.0

80.0

90.0

100.0

-40 0 40 80 120

Signal to Noise Ratio vs. Temperature

Sig

nal t

o N

oise

Rat

io S

Nv(

dB)

Ambient Temperature Ta(oC)

0.5Vpp, 100% white video signal input, 100kHz-6MHz

- 13 -

NJM2574 TYPICAL CHARACTERISTICS

-100.0

-90.0

-80.0

-70.0

-60.0

-50.0

-40.0

-30.0

-20.0

-40 0 40 80 120

Second Harmonic Distortion vs. Temperature

Sec

ond

Har

mon

ic D

isto

rtion

Hv(

dB)

Ambient Temperature Ta(oC)

0.5Vpp, 3.58MHz sinewave signal input

0.0

0.5

1.0

1.5

2.0

-40 0 40 80 120

Switching Voltage vs. Temperature

VthHVthL

Sw

itchi

ng V

olta

ge V

th(V

)

Ambient Temperature Ta(oC)

0.0

0.5

1.0

1.5

2.0

-40 0 40 80 120

PowerSave Switching Voltage vs. Temperature

VthPHVthPL

Pow

erS

ave

Sw

itchi

ng V

olta

ge V

thP

(V)

Ambient Temperature Ta(oC)

[CAUTION] The specifications on this databook are only

given for information , without any guarantee as regards either mistakes or omissions. Theapplication circuits in this databook are described only to show representative usagesof the product and not intended for the guarantee or permission of any right includingthe industrial rights.