NJW1340
VIDEO SWITCH FOR DVD RECORDER
GENERAL DESCRIPTION
The NJW1340 is a video switch for DVD recorders corresponding to
the composite signal and Y/C signal.
It contains synchronous separation circuit and synchronous signal
detection circuit, which are operating constantly. Therefore, It can detect
a signal at the state of power save mode.
PACKAGE OUTLINE
NJW1340V
FEATURES
Operating Voltage
4.5 to 5.5V
2
I C BUS Interface
5-input 1-output video switch
3-input 1-output 2-circuit video switch
6th order Low Pass Filter
Internal synchronous separation circuit
Internal synchronous signal detection circuit
Power Save Circuit
Bi-CMOS Technology
Package Outline
SSOP32
BLOCK DIAGRAM
ADDRESS SDA
28
27
SCL
26
C IN 1
VCC 1
C IN 2
Power Save
C IN 3
GND
Y IN 1
GND
Y IN 2
GND
Y IN 3
GND
CVBS IN 1
GND
CVBS IN 2
DET SW
CVBS IN 3
GND
CVBS IN 4
VCC 2
CVBS IN 5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
I C BUS
BIAS
BIAS
BIAS
CLAMP
CLAMP
CLAMP
CLAMP
CLAMP
CLAMP
CLAMP
CLAMP
2
LPF
31
OUT 2
30
GND
LPF
29
OUT 1
Sync
Sepa
Sync
Detect
32
DET OUT
25
24
23
22
M.M TC
M.M
INTEG
CLAMP
CLAMP
Ver.6
-1-
NJW1340
ABSOLUTE 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
800(note1)
-40 to +85
-40 to +125
UNIT
V
mW
°C
°C
(Note1) At on a board of EIA/JEDEC specification. (76.2
×
114.3
×
1.6mm Two layers, FR-4)
RECOMMENDED OPEARATING CONDITION(Ta=25°C)
PARAMETER
Operating Voltage
SYMBOL
Vopr
TEST CONDITION
MIN.
4.5
TYP.
5.0
MAX.
5.5
UNIT
V
ELECTRICAL CHARACTERISTICS
(V
+
=5.0V, R
L
=10KΩ, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
Operating Current
Icc
No signal
Operating Current
Isave
Power Save
at Power Save
Maximum
CLAMP Channel
Vom1
Output Voltage 1
Vin=100kHz, 1.0Vp-p Sin signal, THD=1%
Maximum
BIAS Channel
Vom2
Output Voltage 2
Vin=100kHz, 1.0Vp-p Sin signal, THD=1%
Voltage Gain
Gv
Vin=1MHz, 1.0Vp-p Sin signal
Frequency
Gf1
Vin=6MHz / 100kHz, 1.0Vp-p Sin signal
Characteristic 1
Frequency
Gf2
Vin=27MHz / 100kHz, 1.0Vp-p Sin signal
Characteristic 2
Cross talk 1
CTI
Vin=4.43MHz,1.0Vp-p Sin signal
Cross talk 2
CTB
Vin=4.43MHz,1.0Vp-p Sin signal
Differential Gain
DG
Vin=1.0Vp-p 10step Video signal
Differential Phase
DP
Vin=1.0Vp-p 10step Video signal
S/N
SNv
Vin=1.0Vp-p,100% White Video Signal
Sync Detection Level
V
SYNC
Vin=10step Video signal
Capture Voltage H
V
CAPH
(Note2)
Capture Voltage L
V
CAPL
(Note2)
Lock Voltage H
V
LOCKH
(Note2)
Lock Voltage L
V
LOCKL
(Note2)
DET OUT
DetH
Output Voltage H
DET OUT
DetL
Output Voltage L
Switch Change
VthH
Voltage H
Switch Change
VthL
Voltage L
ADR Voltage H
V
ADRH
ADR Voltage L
V
ADRL
Power Save SW
I
SWPH
V=5V
Inflow Current H
Power Save SW
V=0.3V
I
SWPL
Inflow Current L
DET SW
V=5V
I
DETH
Inflow Current H
DET SW
V=0.3V
I
DETL
Inflow Current L
MIN.
-
-
1.6
1.6
-0.5
-0.5
-
-
-
-
-
-
-
2.07
1.57
2.53
1.25
4.9
-
2.0
0
3.5
0
150
4.0
80
0.2
TYP.
13.0
5.0
2.6
2.9
0.0
0.0
-40
-70
-70
0.5
0.5
65
80
2.22
1.72
2.68
1.40
5.0
0.1
-
-
-
-
220
7.0
110
2.0
MAX.
17.0
6.5
-
-
0.5
0.5
-24
-
-
-
-
-
-
2.37
1.87
2.83
1.55
-
0.3
V
+
0.6
5.0
1.0
300
11.0
150
6.0
UNIT
mA
mA
Vp-p
Vp-p
dB
dB
dB
dB
dB
%
deg
dB
mVp-p
V
V
V
V
V
V
V
V
V
V
µA
µA
µA
µA
-2-
NJW1340
MODE SWITCH FUNCTON
Power Save
Mode
H
Video switch block Power Save OFF (Active)
L
Video switch block Power Save ON (Mute)
OPEN
Video switch block Power Save ON (Mute)
DET SW
H
L
OPEN
Mode
Y IN 1Select
CVBS IN 1 Select
CVBS IN 1 Select
(Note2)
5V
V
LOCKH
V
CAPH
V
CAPL
V
LOCKL
0V
Capture Range Lock Range
-3-
NJW1340
TIMING ON THE I
2
C BUS (SDA,SCL)
SDA
t
f
t
r
t
SU:DAT
t
f
t
HD:ST A
t
SP
t
r
t
BUF
SCL
t
HD:STA
S
t
LOW
t
SU:STA
t
HD:DAT
t
HIGH
t
SU:ST O
Sr
P
S
I
2
C BUS Load Conditions
STANDARD MODE: Pull up resistance 4kΩ (Connected to +5V), Load capacitance 200pF (Connected to GND)
CHARACTERISTICS OF I/O STAGES FOR I
2
C BUS (SDA,SCL)
PARAMETER
Low Level Input Voltage
High Level Input Voltage
Low level output voltage (3mA at SDA pin)
Input current each I/O pin with an input voltage
between 0.1V
DD
and 0.9V
DDmax
SYMBOL
V
IL
V
IH
V
OL
I
i
Standard mode
MIN.
0.0
3.0
0
-10
TYP.
-
-
-
-
MAX.
1.5
5.0
0.4
10
UNIT
V
V
V
µA
-4-
NJW1340
CHARACTERISTICS OF BUS LINES (SDA,SCL) FOR I
2
C-BUS DEVICES
Standard mode
MIN.
SCL clock frequency
Hold time (repeated) START condition.
Low period of the SCL clock
High period of the SCL clock
Set-up time for a repeated START condition
Data hold time
NOTE)
Data set-up time
Rise time of both SDA and SCL signals
Fall time of both SDA and SCL signals
Set-up time for STOP condition
Bus free time between a STOP and START condition
Capacitive load for each bus line
Noise margin at the Low level
Noise margin at the High level
f
SCL
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
t
r
t
f
t
SU:STO
t
BUF
C
b
V
nL
-
4.0
4.7
4.0
4.7
0
250
-
-
4.0
4.7
-
0.5
1
TYP.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
MAX.
100
-
-
-
-
-
-
1000
300
-
-
400
-
-
PARAMETER
SYMBOL
UNIT
kHz
µs
µs
µs
µs
µs
ns
ns
ns
µs
µs
pF
V
V
nH
V
C
b
; total capacitance of one bus line in pF.
NOTE). Data hold time : t
HD:DAT
Please hold the Data Hold Time (t
HD:DAT
) to 300ns or more to avoid status of unstable at SCL falling edge.
The SDA block in the NJW1340 does not hold data. Add external data-delay-circuit of the SDA terminal, in case of not
providing a hold time of at least 300nsec for the SDA in the master device.
The time-consists of the data-delay-circuit of the SDA terminal are as follows.
(a) Low level
(b) High level
High level: T
LH
≈
R
P
*C
D
Low level: T
HL
≈
R
D
*C
D
In addition, Schottky barrier diode (SBD) influences a Low level at the Acknowledge. Therefore choose the low forward voltage
(Vf) as much as possible.
V
DD
R
P
R
P
SCL
MASTER
SBD
SDA
NJW1340
R
D
C
D
-5-
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