NJM2570
PRELIMINARY
75Ω Driver with Filer and Y/C MIX
Ω
s
GENERAL DESCRIPTION
NJM2570
is a video amplifier included LPF in Y and C system.
Adjustable LPF characteristic with external resistor and output
with 75ohm driver optimize the TV monitor system.
Also, it can discriminated the aspect ratio of TV by internal DC
interface for S terminal.
NJM2570
includes power save circuit to suitable for portable
video application.
s
PACKAGE OUTLINE
NJM2570V
s
FEATURES
q
Operating Voltage 4.5 to 5.5V
q
Input Y and C
0.5Vpp
q
Internal LPF
0dBtyp. at 4MHz (at IREF=33kΩ)
-35dBtyp. at 10MHz (at IREF=33kΩ)
0dBtyp. at 6MHz (at IREF=22kΩ)
-40dBtyp. at 16MHz (at IREF=22kΩ)
q
Internal DC Interface for aspect ratio discrimination
q
Bipolar technology
q
Package Outline
SSOP16
s
BLOCK DIAGLAM
V+1
V+2
s
PIN CONFIGURATION
1
16
8
9
15
9
1. Cin
2. GND
3. SDCin
4. SDCout
5. Cout
6. Vout
7. Vsag
8. GND2
9. V+2
10. Ysag
11. Yout
12. VREF
13. POWERSAVE
14. Yin
15. V+1
16. IREF
Yin
14
CLAMP
6dB
LPF
6dB
11
Yout
6dB
6dB
10
Ysag
6
Vout
7
Vsag
6dB
Cin
1
BIAS
6dB
LPF
6dB
5
Cout
SDCin
3
4
SDCout
6dB
voltage reference
current referrence
comparator
13
12
16
2
8
VREF
IREF
GND1
GND2
PowerSave
-1-
Ver.1
NJM2570
PRELIMINARY
s
ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
PARAMETER
Operating Voltage 1
Operating Voltage 2
PARAMETER
Operating Circuit 1
Operating Circuit 2
Operating Circuit 1
at Power Save
Operating Circuit 2
at Power Save
Voltage Gain 1(Y Signal)
Voltage Gain 1(C Signal)
Voltage Gain 1(V Signal)
SYMBOL
V
+
P
D
Topr
Tstg
RATINGS
7.0
300
-40 to +85
-40 to +125
RATINGS
V1
V
+
2
TEST CONDITION
V
+
1=5.0V, No signal
V
+
2=5.0V, No signal
V
+
1=5.0V, Power Save Mode
V
+
2=5.0V, Power Save Mode
Yin=100kHz,0.5Vpp Input Sign signal
Yin=100kHz,0.5Vpp Input Sign signal
Yin=4MHz/100kHz,
0.5Vpp, Input Sine signal IREF=33kΩ
Yin=10MHz/100kHz,
0.5Vpp, Input Sign signal IREF=33kΩ
Yin=6MHz/100kHz,
0.5Vpp, Input Sine signal IREF=22kΩ
Yin=16MHz/100kHz,
0.5Vpp Input Sine signal, IREF=22kΩ
Cin=4.43MHz-500kHz,
0.15Vpp Input Sine signal, IREF=33kΩ
Cin=4.43MHz+500kHz,
0.15Vpp Input Sine signal, IREF=33kΩ
Cin=4.43MHz-500kHz,
0.15Vpp Input Sine signal, IREF=22kΩ
Cin=4.43MHz+500kHz,
0.15Vpp Input Sine signal, IREF=22kΩ
V
+
1=V
+
2=4.5V,Yin=100kHz,
Sine Signal, THD=1%, R
L
=75Ω
V
+
1=V
+
2=4.5V,Cin=4.43MHz,
Sine Signal, THD=1%, R
L
=75Ω
V
+
1=V
+
2=4.5V,Yin=100kHz,
Sine Signal, THD=1%, R
L
=75Ω
Active
Non-active
+
UNIT
V
mW
°C
°C
MIN.
4.5
4.5
MIN.
-
-
-
-
12.0
12.0
-3.0
-
-3.0
-
-1.0
-5.0
-1.0
-1.0
1.2
1.05
1.2
1.8
0
TYP. MAX. UNIT
5.0
5.5
V
5.0
5.5
V
TYP.
10
15
50
0
12.4
12.4
12.4
0
-35
0
-40
1.0
-2.0
0
0
1.5
1.85
1.4
-
-
MAX.
18
25
120
120
12.9
12.9
12.9
1.0
-30
dB
2.0
-30
3.0
1.0
dB
1.0
1.0
-
-
-
V
+
V
0.3
Vp-p
Vp-p
Vp-p
UNIT
mA
mA
µA
µA
dB
dB
dB
s
RECOMMENDED OPEARATING CONDITION(Ta=25°C)
SYMBOL
Vopr1
Vopr2
SYMBOL
I
CC
1
I
CC
2
Isave1
Isave2
Gvy
Gvc
Gvv
Gfy1-1
Frequency Characteristics
(Y Signal)
Gfy1-2
Gfy2-1
Gfy2-2
Gfc1-1
Frequency Characteristics
(C Signal)
Gfc1-2
Gfc2-1
Gfc2-2
Maximum Output Voltage
Swing 1(Y Signal)
Maximum Output Voltage
Swing 1(C Signal)
Maximum Output Voltage
Swing 1(V Signal)
SW Change Voltage High
Level for Power Save
SW Change Voltage High
Level for Power Save
Voym
Vocm
Vovm
VcH
VcL
s
ELECTRICAK CHARACTERISTICS(V
+
1=V
+
2=5.0V,R
L
=150Ω,Ta=25°C, IREF=22kΩ at non-designation)
Cin=4.43MHz,0.15Vpp Input Sign signal 12.0
-2-
Ver.1
NJM2570
PRELIMINARY
+
+
s
ELECTRICAK CHARACTERISTICS(V
1=V 2=5.0V,R
L
=150Ω,Ta=25°C, IREF=22kΩ at non-designation)
PARAMETER
Crosstark 1(Yin to Cout)
Crosstalk 2(Cin to Yout)
S/N1(Y Signal)
S/N2(C Signal)
S/N3(V Signal)
2nd. Distortion 1(Y Signal)
2nd. Distortion 1(C Signal)
2nd. Distortion 1(V Signal)
SDC Voltage Gain
SDC Maxim Output Voltage
Threshold Voltage
for SDC Output Impedance
SDC Output Impedance
SYMBOL
CTyc
CTcy
SNy
SNc
SNv
Hy
Hc
Hv
Gv
SDC
Vom
SDC
VthR
SDC
RSDC
TEST CONDITION
Yin to Cout=20log(Cout/Yout)
Yin=4.43MHz,0.5Vpp Sine Signal,
Cin=AC GND
Cin to Yout=20log(Yout/Cout)
Cin=4.43MHz,0.15Vpp Sine Signal,
Yin=AC GND
Yin=50% White Video Signal,
R
L
=75Ω at Yout
Bandwidth 100kHz to 6MHz
Cin=100% Red Field Video Signal,
R
L
=75Ω at Yout
Bandwidth 100Hz to 500kHz
Yin=50% White Video Signal,
R
L
=75Ω at Yout at Vout
Bandwidth 100kHz to 6MHz
Yin=1MHz,0.5Vpp, Sine Signal
Cin=4.43MHz,0.15Vpp, Sine Signal
Yin=1MHz,0.5Vpp, Sine Signal
SDCin=1.0V,R
L
=100kΩ
R
L
=100kΩ, V
+
1=V
+
2=4.5V
Change Guarantee
for SDC High Impedance
SDCout at High Impedance
MIN.
-
-
55
55
53
-
-
-
5.5
3.6
-
165
TYP.
-50
-60
60
60
57
-50
-50
-50
6.0
-
-
220
MAX.
-40
-40
-
-
-
-40
-40
-40
6.5
-
0.3
275
UNIT
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
V
kΩ
s
CONTROL TERMINAL
PARAMETER
Power Save
CONTROL
H
L
OPEN
Power Save: OFF
Power Save: ON
Power Save: ON
NOTES
-3-
Ver.1
NJM2570
PRELIMINARY
s
TEST CIRCUIT
+
0.1uF
33kΩ
22kΩ
50Ω
75Ω
10uF
75Ω
Yout2
75Ω
10uF
0.1uF
Yin
+
+
Yout1
+
12
11
100uF
+
10
22uF
5V
16
15
14
13
0.1uF
9
IREF
V+1
Yin
POWER
SAVE
VREF
Yout
Ysag
V+2
NJM2570
Cin
1
GND1
2
SDCin
3
SDCout
4
Cout
5
+
100uF
Vout
6
+
100uF
Vsag
7
+
22uF
Vout1
75Ω
Cout2
75Ω
75Ω
Vout2
GND2
8
10kΩ
Cin
100kΩ
50Ω
75Ω
SDCout
0.1uF
Cout1
75Ω
-4-
Ver.1
NJM2570
PRELIMINARY
s
TERMINAL EXPLANATION
PIN No.
SYMBOL
1
Cin
EQUIVALENT CIRCUIT
V
+
1
DC VOLTAGE
NOTE
V
+
1 150
Ω
20k
Ω
2
GND
3
SDCin
V
+
1
V
+
1
100
Ω
4
SDCout
V
+
1
10k
Ω
125k
Ω
95k
Ω
-5-
Ver.1
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