NJM2571A
LOW VOLTAGE VIDEO AMPLIFIER WITH LPF
sGENERAL
DESCRIPTION
The
NJM2571A
is a Low Voltage Video Amplifier contained LPF
circuit. Internal 75Ω driver is easy to connect TV monitor directly.
The
NJM2571A
features low power and small package, and is
suitable for low power design on downsizing of DSC and DVC.
sPACKAGE
OUTLINE
NJM2571AF1
sFEATURES
q
Operating Voltage
2.8 to 5.5V
q
9dB amplifier
-33dB at 19MHz typ.
q
Internal LPF
q
Internal 75Ω Driver Circuit (2-system drive)
q
Power Save Circuit
q
Bipolar Technology
q
Package Outline
MTP6
sBLOCK
DIAGRAM
V
+
6
75ΩDri ver
Vin
4
LPF
9dB
2
Vout
CLAMP
3
Vsag
5
1
GND
Power Save
-1-
NJM2571A
sABSOLUTE
MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
+
V
P
D
Topr
Tstg
+
RATINGS
7.0
200
-40 to +85
-40 to +125
UNIT
V
mW
°C
°C
sELECTRICAL
CHARACTERISTICS
(V =3.0V,R
L
=150Ω,Ta=25°C)
PARAMETER
Operating Current
Operating Current at Power Save
Maximum Output Voltage Swing
Voltage Gain
Low Pass Filter Characteristic
Differential Gain
Differential Phase
S/N Ratio
2nd. Distortion
SW Change Voltage High Level
SW Change Voltage Low Level
SYMBOL
I
CC
Isave
Vom
Gv
TEST CONDITION
No Signal
Power Save Mode
f=100kHz,THD=1%
MIN.
-
-
2.2
8.5
-0.6
-
-
-
-
-
1.8
0
TYP.
8.0
30
2.5
9.0
-0.1
-33
0.5
0.5
+60
-50
-
-
MAX.
12.0
50
-
9.5
0.4
-23
-
-
-
-
V
+
UNIT
mA
uA
Vp-p
dB
dB
%
deg
dB
dB
V
Vin=100kHz, 0.7Vp-p,
Input Sine Signal
Gfy4.5M Vin=4.5MHz/100kHz, 0.7Vp-p
Gfy19M
DG
DP
SNv
Hv
VthPH
VthPL
Vin=19MHz/100kHz, 0.7Vp-p
Vin=0.7Vp-p,
Input 10step Video Signal
Vin=0.7Vp-p,
Input 10step Video Signal
Vin=0.7Vp-p, R
L
=75Ω
100% White Video Signal
Vin=0.7Vp-p, 3.58MHz,
Sine Video Signal, R
L
=75Ω
Active
Non-active
0.3
sCONTROL
TERMINAL
PARAMETER
Power Save
STATUS
H
L
OPEN
Power Save: OFF
Power Save: ON
Power Save: ON
NOTE
-2-
NJM2571A
sTEST
CIRCUIT
input
0.1uF
10uF
6
V
+
5
GND
75Ω
4
Vin
0.1uF
NJM2571
A
Power
Save
1
Vout
2
33uF
Vsag
3
33uF
75Ω
output
75Ω
sAPPLICATION
CIRCUIT
input
0.1uF
10uF
6
V
+
5
GND
75Ω
4
Vin
0.1uF
NJM2571A
Power
Save
1
Vout
2
100uF
Vsag
3
33uF
75Ω
output1
75Ω
output2
-3-
NJM2571A
sTERMINAL
FUNCTION
PIN No.
PIN NAME
DC VOLTAGE
Power
save
EQUIVALENT CIRCUIT
32KΩ
48KΩ
1
Power Save
-
V
+
V
+
2
Vout
0.26V
Vout
V
+
V
+
750Ω
3
Vsag
-
Vsag
V
+
V
+
V
+
4
Vin
1.10V
Vin
270
Ω
5
6
GND
V
+
-
3V
-4-
NJM2571A
s
TYPCAL CHARACTERISTICS
Voltage Gain vs. Frequency
20.0
Operating Current vs. Supply Voltage
14.0
12.0
10.0
0.0
Gv (dB)
Icc(mA)
6
7
-20.0
8.0
6.0
-40.0
-60.0
4.0
2.0
2.00
-80.0
5
10
10
Freq (Hz)
10
3.00
4.00
5.00
Vcc(V)
6.00
7.00
8.00
Operatibg Current at Standby State vs. Supply Voltage
120.0
100.0
80.0
60.0
40.0
20.0
2.00
3.00
4.00
5.00
Vcc(V)
6.00
7.00
8.00
Maxim Output Voltage Swing vs. Supply Voltage
6.0
5.0
4.0
Isave(uA)
Vom(Vpp)
3.0
2.0
1.0
0.0
2.00
3.00
4.00
5.00
6.00
Vcc(V)
7.00
8.00
Voltage Gain vs. Supply Voltage
10.0
1.0
Low Pass Fillter Characteristics vs. Supply Voltage
Gfy4.5M
9.5
0.5
Gfy4.5M(dB)
3.00
4.00
5.00
Vcc(V)
6.00
7.00
8.00
Gv(dB)
9.0
0.0
8.5
-0.5
8.0
2.00
-1.0
2.00
3.00
4.00
5.00
6.00
Vcc(V)
7.00
8.00
-5-
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
