LA7337 View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LA7337 Datasheet PDF : 7 Pages
| |||
LA7337
Continued from preceding page.
Parameter
Playback mode phase detector output
difference voltage (1)
Playback mode phase detector output
difference voltage (2)
Playback mode SECAM discriminator
characteristics (1)
Playback mode SECAM discriminator
characteristics (2)
SECAM discriminator comparator
threshold voltage
Record/playback control threshold voltage
Forced SECAM mode threshold voltage
Forced mute mode threshold voltage
Reference voltage
Symbol
Conditions
VSCPD1
VSCPD2
V5 = V6 = 0 V, SW8B = on, V16 = 5 V,
S27 = composite sync., S13 = sine wave
(50 mVp-p, f = 1.0625/1.1016 MHz)
As above, except S13 = sine wave
(50 mVp-p, f = 627 kHz)
VSCMP1 V16 = 5 V, SW23 = SW24 = On
VSCMP2 V16 = 5 V, SW23 = SW24 = On
VTCOMP SW25 = On
VTRP
VTHSM
VTHMM
VREG
V16 = 0 V, SW25 = on, V25 = 3 V,
S27 = composite sync., S15 = sine wave
(200 mVp-p, f = 4.286 MHz)
V16 = 0 V, SW25 = on, V25 = 4 V,
S27 = composite sync., S15 = sine wave
(200 mVp-p, f = 4.286 MHz)
Ratings
Unit
min
typ
max
150
180
mV
100 mV
4.5
V
0.5
V
3.2
3.5
3.8
V
2.3
2.5
2.7
V
4
V
1
V
4.1
4.3
4.5
V
Standard Input Signal Levels
REC-IN (pin 15)
PB-IN (pin 13)
The 200 mVp-p ID component
50 mVp-p
Internal filter group delay times (reference values)
1.1 MHz BPF
2.2 MHz BPF
4.3 MHz BPFA
4.3 MHz BPFB
460 ns (PB) 430 ns (REC)
180 ns
230 ns
170 ns
[Record/playback mode settings]
Pin 16 = low → record mode
Pin 16 = high → playback mode
[Bell filter offset adjustment]
Increasing the pin 6 voltage increases the 1.1-MHz bell filter center frequency (f0).
Increasing the pin 5 voltage increases the 4.3-MHz bell filter center frequency (f0).
[Test mode settings]
The IC enters test mode if pin 6 is set to 5 V. The pin 5, 11, 17, and 26 outputs behave as follows in this mode.
Pin 5: The 4.43-MHz VCO output appears (However, note that a load of about 1 kΩ is required between this pin and
VCC.)
Pin 11: The 1.1-MHz band-pass filter output appears.
Pin 17: The 4.3-MHz band-pass filter output appears.
Pin 26: The BGP (used for SECAM discrimination, playback AGC, and record killer) can be monitored.
[Muting control table]
Voltage applied to pin 1
4 V or higher
Open
1 V or lower
Output signal mode (pins 17 and 11)
Forced SECAM
AUTO (Uses the output of the internal discriminator)
Forced mute mode
No. 5288-4/7
Share Link: 