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NJM2277
VIDEO SWITCH MATRIX
sGENERAL DESCRIPTION s PACKAGE OUTLINE The NJM2277 is a Video switch for Set Top Box, and TV. The NJM2277 includes 2 CVBS input, 2-RGB input switches. Also it allow the inputs to be routed in 3 CVBS output, 1-RGB output. th The NJM2277 includes 5 -order Low pass Filter suppress the noise interference to video signal. The NJM2277 enable to control the Output Impedance for RGB outputs. NJM2277L NJM2277M
sFEATURES q Operating Voltage 5V q 2- RGB Switches. q 75 Cable Driver on all channels. q 41dB Stop Band Rejection (@27MHz) q Bipolar Technology q Package Outline SDIP28, SDMP30 sFUNCTION BLOCK DIAGRAM
q 2-Input,3-output CVBS Switches. th q Quad 5 order Butter worth Low Pass Filter. q High Impedance output for RGB signal.
+Vcc GND -VEE
6dB
75
S_Comp Out1
6dB
Comp_Sin Comp_Vin FB_Sin FB_Vin R_Sin R_Vin G_Sin G_Vin B_Sin B_Vin
Switch Control Switch Control
75 75
S_Comp Out2
Filter
2 to 1 Switch
6dB 6dB
TV_Comp Out
2 to 1 Switch
75 75
FB_Out
2 to 1 Switch
Filter
6dB 6dB
Red Out
2 to 1 Switch 2 to 1 Switch
Filter
75
Green Out
Filter
6dB
75
Blue Out
A/B Mux High Z Cont
-1-
NJM2277
s Pin Configuration (SDIP28)
Fast Blanking Out TV Composite Out Power Supply STB RED In Power Supply VTR RED In GND STB BLUE In Power Supply
1 2 3
FB_out TV_Comp out Vcc1 R_Sin VEE1 R_Vin GND1
S_Comp Out2 28 STB Composite Video Out2 S_Comp Out1 27 STB Composite Video Out1
High Z Cont 26 RGB Output Control Comp_Sin A/B Mux Comp_Vin
25
4 5 6 7
STB Composite Video In
24 Switch Matrix Control 23 VTR Composite Video In
GND 22 GND FB_Sin 21 STB Fast Blanking In
8 B_Sin 9
Vcc B_Vin VEE
Vcc2 20 Power Supply FB_Vin
19
VTR BLUE In 10 Power Supply STB GREEN In GND VTR GREEN In
11
VTR Fast Blanking In
VEE2 18 Power Supply Red Out Blue Out
17 RED Out 16
12 G_Sin 13 GND2 14 G_Vin
BLUE Out Green Out
Green Out 15
SDIP28
-2-
NJM2277
s Pin Configuration (SDMP30)
Fast Blanking Out TV Composite Out Power Supply STB RED In Power Supply1 VTR RED In GND STB BLUE In Power Supply VTR BLUE In Power Supply No Connect STB GREEN In GND VTR GREEN In
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
FB_out TV_Comp out Vcc1 R_Sin VEE1 R_Vin GND1 B_Sin Vcc B_Vin VEE NC G_Sin GND2 G_Vin
S_Comp Out2 S_Comp Out1 High Z Cont Comp_Sin A/B Mux Comp_Vin GND FB_Sin Vcc2 FB_Vin VEE2 NC Red Out Blue Out Green Out
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
STB Composite Video Out1 STB Composite Video Out2 RGB Output Control STB Composite Video In Switch Matrix Control VTR Composite Video In GND STB Fast Blanking In Power Supply VTR Fast Blanking In Power Supply No Connect RED Out BLUE Out Green Out
SDMP30
-3-
NJM2277
s Pin Description Symbol Pin No. I/O Type SDIP28 SDMP30 Equivalent Circuit Function
VCC
FB_out
1
1
O
Fast Blanking Output
VEE
VCC
TV_Comp out
2
2
O
Composite Video Signal Output
VEE
Vcc1
3
3
_
_
Vcc
VCC
400
R_Sin
4
4
I
100k VEE GND
RGB Signal Input CVBS/Y/C Signal Input
-4-
NJM2277
Symbol Pin No. SDIP28 SDMP30 I/O Type Equivalent Circuit Function
VEE1
5
5
_
_
VEE
VCC
400
R_Vin
6
6
I
RGB Signal Input CVBS/Y/C Signal Input
100k VEE GND
GND1
7
7
_
_
0
VCC
400
B_Sin
8
8
I
100k VEE GND
RGB Signal Input CVBS/Y/C Signal Input
-5-
NJM2277
Symbol Pin No. I/O Type SDIP28 SDMP30 Equivalent Circuit Function
Vcc
9
9
_
_
Vcc
VCC
400
B_Vin
10
10
I
100k VEE GND
RGB Signal Input CVBS/Y/C Signal Input
VEE
11
11
_
_
VEE
VCC
400
G_Sin
12
13
I
100k VEE GND
RGB Signal Input CVBS/Y/C Signal Input
-6-
NJM2277
Symbol Pin No. I/O Type SDIP28 SDMP30 Equivalent Circuit Function
GND2
13
14
_
_
0
VCC
400
G_Vin
14
15
I
100k VEE GND
RGB Signal Input CVBS/Y/C Signal Input
VCC
Green Out
15
16
O
Filtered RGB Signal Output
VEE
VCC
Blue Out
16
17
O
Filtered RGB Signal Output
VEE
-7-
NJM2277
Symbol Pin No. SDIP28 SDMP30 I/O Type Equivalent Circuit Function
VCC
Red Out
17
18
O
Filtered RGB Signal Output
VEE
VEE2
18
20
_
_
VEE
VCC
400
FB_Vin
19
21
I
100k VEE GND
VTR/STB Fast Blanking Input
Vcc2
20
22
_
_
Vcc
-8-
NJM2277
Symbol Pin No. SDIP28 SDMP30 I/O Type Equivalent Circuit Function
VCC
400
FB_Sin
21
23
I
100k VEE GND
VTR/STB Fast Blanking Input
GND
22
24
_
_
0
VCC
400
Comp_Vin
23
25
I
Video Signal Input CVBS/Y/C Signal Input
100k VEE GND
VCC
400
A/B Mux
24
26
I
1k
Input Channel Selector
100k VEE GND
-9-
NJM2277
Symbol Pin No. I/O Type SDIP28 SDMP30 Equivalent Circuit Function
VCC
400
Comp_Sin
25
27
I
100k VEE GND
Video Signal Input CVBS/Y/C Signal Input
VCC
400
High_Z Cont
26
28
I
1k
RGB Output Impedance Control "0"= High Impedance "1"= Through
VEE GND
100k
VCC
S_Comp Out1
27
29
O
Filtered Video Signal Output
VEE
VCC
S_Comp Out2
28
30
O
Filtered Video Signal Output
VEE
- 10 -
NJM2277
sABSOLUTE MAXIMUM RATING (Ta=25C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range
SYMBOL
RATING 15 (SDIP28) 700 (SDMP30) 700 -40 to +85 -40 to +125
UNIT V mW C C
V
+
PD Topr Tstg
sELECTRICAL CHARACTERISTICS ( Ta=25C, Vcc=5.0V,VEE=-5V) PARAMETER Operating Voltage Supply Current
SYMBOL
TEST CONDITION
MIN. 4.5
TYP. 5.0 46
MAX. 5.5 56
UNIT V mA
V
+
Icc
No Signal,No Loard
36
qVideo system( Ta=25C, Vcc=5.0V,VEE=-5V, RL=150 unless otherwise specified.) PARAMETER Gain Frequency Response Characteristics Stop Band Rejection -3dB Bandwidth RGB Gain matching level Total Harmonic Distortion Cross talk1 Cross Talk2 Differential Gain Differential Phase Input Impedance Output Impedance Output Impedance Equivalent Output Capacitance Group Delay
SYMBOL
TEST CONDITION Vin=1.0Vp-p 100KHz S_Comp Out1/2,TV_Comp Out Red/Green/Blue Out Vin=1.0Vp-p 5MHz /100KHz All filtered channel f=100KHz/27MHz ,1Vp-p All filtered channel All filtered channel Gain Matching Between Red/Green/Blue Out f=1KHz, 1Vp-p input Vin=4.43MHz/1.0Vp-p One input to any other output f=4.43MHz/1Vp-p Mux input to output Vin=1Vp-p,10step Stairs-signal except FBout Vin=1Vp-p,10step Stairs-signal except FBout All Channel High Z Cont="0" Red/Green/Blue Output High Z Cont="1" Red/Green/Blue Output , RGB output, High Z Cont="0" Vin=1Vp-p, 100Khz All filtered Channel
MIN 6.0 -1.0 -35 -5 10 -
TYP 6.4 0 -41 7.1 0 0.1 -60 -60 0.4 0.4 50 20 45 3 70
MAX 6.8 1.05 -
UNIT dB dB dB MHz % % dB dB % deg K K m
pF nS
GV FBW Fsb Fc Gm THD CT1 CT2 DG DP Rin Ro1 Ro2 Co Tpd
- 11 -
NJM2277
sELECTRICAL CHARACTERISTICS ( Ta=25C, V=5V) q Fast Blanking ( Ta=25C, Vcc=5.0V,VEE=-5V, RL=150 unless otherwise specified.) PARAMETER Fast Blanking Output Low Level Fast Blanking Output High Level Fast Blanking Delay
SYMBOL
TEST CONDITION FB S/Vin=0V FB S/Vin=2Vp-p FB S/Vin=2Vp-p 100KHz
MIN 0 2.0 -
TYP
MAX 0.4
UNIT
V V
FBlow FBhigh Ftpd
3.8 25 -
nS
q Switch Contorl ( Ta=25C, Vcc=5.0V, VEE=-5V, RL=150 unless otherwise specified.) PARAMETER A/B Mux Logic-High level A/B Mux Logic-Low level High Z Control Logic-High level High Z Control Logic-Low level q SWITCH CONTROL TABLE A/B Mux : Input Channel Selector Control Signal 0* 1 * : Default setting High Z Cont : RGB Outputs Impedance Control Control Signal RGB Outputs Impedance TV Comp Video Out Comp_Vin Comp_Sin FB Out FB _Vin FB _Sin OUTPUTS Red Out R_Vin R_Sin Green Out G_Vin G_Sin Blue Out B_Vin B_Sin
SYMBOL
TEST CONDITION
MIN 2.0
TYP
MAX
UNIT
V
Vihm Vilm Vihz Vilz
0.8 2.0 0.8
V V V
0* High Impedance 1 Through * : Default setting
- 12 -
NJM2277
sMeasurement Circuit ( Ta=25C, Vcc=5V,VEE=-5V)
150 SW28
150
TP27 SW27 TP27
TP25
TP24
TP23
TP21
TP19 150
150
150 SW15 TP16 Blue Out TP15 Green Out G_Vin TP14 150 TP17 Blue Out GND2 TP16 Green Out G_Vin TP15
TP28
SW17 SW16 TP17 Comp_Vin GND Comp_Sin
S_Comp Out2
S_Comp Out1
SDIP28
TV_Comp Out FB_Out TP1 SW1 150 150 R_Sin VCC1 R_Vin G_Sin B_Sin B_Vin VEE1 GND2 GND1 VCC
TP2 SW2 TP4 + + 47uF 0.47uF TP6 47uF TP8 TP10 TP12
0.47uF
GND
VCC
VEE
150 150 SW30 TP30
TP28
TP27
TP26
TP25
TP23
TP21
150 SW18
Red Out
High Z Cont
FB_Sin
FB_Vin
VCC2
VEE2 VEE
A/B Mux
150
SW29 TP29
SW17 SW16
TP18 A/B Mux FB_Sin S_Comp Out2 S_Comp Out1 Comp_Sin Comp_Vin Red Out G_Sin TP13 FB_Vin VEE2 High Z Cont Vcc2 GND NC NC
SDMP30
TV_Comp out TP1 TP2 SW1 150 150 0.47uF SW2 TP4 + + 47uF 0.47uF TP6 47uF TP8 TP10 B_Vin R_Sin VEE1 FBout GND1 R_Vin B_Sin Vcc1 VEE
Vcc
GND
VCC
VEE
- 13 -
NJM2277
sTypical Characteristics Frequency Response ( Ta=25C, Vcc=5V,VEE=-5V)
10 0 -10 Gain [dB] -20 -30 -40 -50 0.1 1 Frequency [MHz] 10 100
Normalized Frequency Response ( Ta=25C, Vcc=5V,VEE=-5V)
1
0
-1
-2
Gain [dB]
-3
-4
-5
-6 0 .1 1
F re q u e n c y [M H z ]
10
100
Group Delay ( Ta=25C, Vcc=5V, VEE=-5V)
92
88
DELAY[nS]
84
80
76
72 0 2 4 6
Frequency[MHz]
8
10
12
- 14 -
NJM2277
sAPPLICATION CIRCUIT
CVBS/Y Fast Blank R/C
(SDMP30)
Mod Out
ENCODER
G B 6dB 29 CVBS/Y
6dB Filer 27 25 20 CVBS/Y 23 21 4 6 R/C 11 G 7 B 13 15 8 10 Filter 6dB Filter 6dB Filter 6dB 6dB 6dB
30
CVBS/Y
2 CVBS/Y 19 16 18 R/C 15 11 7 17 B
19
1 Fast Blank
15
16 Fast Blank
16 G
26
TV SCART
VCR SCART
28
(Note) When there is no offset voltage of input, it is possible to remove the capacitor of 4.7uF of an input.
TV Fast Blanking Out TV Composite Out
75 1 75 2
VCC
75 30 75 29
VCC
Composite Video Out1 Composite Video Out2 RGB Output Control ENCODER Composite Video In
VCC
3
28 4.7uF
ENCODER RED In
75
VEE
4.7uF 4 27
75
5
26 4.7uF
Sw itch Matrix Control VCR Composite Video In
GND
VCR RED In
75
GND
4.7uF 6 25
75
7
24
ENCODER BLUE In
75
VCC
4.7uF 8 9 4.7uF 10 21
VEE
ENCODER Fast Blanking In
23
VCC
SDMP30
22
75
VCR BLUE In
75
VEE
VCR Fast Blanking In
0.47uF
75
VCC + GND
47uF +5V
11
20
12
19 75
VEE
+
ENCODER GREEN In
75
GND
4.7uF 13 18
-5V 0.47uF 47uF
TV RED Out
75
14
17 75
TV BLUE Out TV Green Out
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
VCR GREEN In
75
4.7uF 15 16
- 15 -

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