BA7745FS Ver la hoja de datos (PDF) - ROHM Semiconductor
Número de pieza
componentes Descripción
Fabricante
BA7745FS Datasheet PDF : 8 Pages
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Video ICs
BA7745FS
Playback system (unless otherwise noted, Ta = 25°C, VCC = 5V, and f = 1.5MHz)
Parameter
〈Playback mode〉
Supply current
Voltage gain CH1
Voltage gain CH2
Voltage gain differential
CH1 to CH2 crosstalk
CH2 to CH1 crosstalk
CH1 frequency characteristic
CH2 frequency characteristic
Gain adjustment headroom
Gain adjustment headroom
Maximum output voltage
CH1 input conversion noise
CH2 input conversion noise
Head switch voltage
Head switch voltage
Output DC offset
PB holding voltage
REC holding voltage
Head switch-on resistance
SP holding voltage
EP holding voltage
Gain emphasis EP
Symbol Min. Typ. Max. Unit
Conditions
17pin: “L” 11pin: 2.0V
Iq (PB)
— 19.0 31.0 mA Inflow current to pin 12 when no signal.
GVP1
80 83 86 dB 23pin, 20.5dBµIN, 10pin OUT, 8pin: “H”
GVP2
80 83 86 dB 25pin, 20.5dBµIN, 10pin OUT, 8pin: “L”
∆GVP – 2.0
0 + 2.0 dB 23pin, 25pin, 20.5dBµIN, ∆10pin OUT
CT1→2
CT2→1
fP1
fP2
— – 40 – 35
— – 40 – 35
0 – 2.4 – 5
0 – 2.4 – 5
dB
23pin 31.0dBµ, 25pin 0 IN,
8pin: “H” → “L”, ∆10pin OUT
dB
23pin 0, 25pin 31.0dBµIN,
8pin: “H” → “L”, ∆10pin OUT
dB
23pin 20.5dBµIN, 8pin: “H”
f = 2.2MHz / 1.0MHz, ∆10pin OUT
dB
25pin 20.5dBµIN, 8pin: “L”
f = 2.2MHz / 1.0MHz, ∆10pin OUT
– ∆GVCA — – 40 – 30 dB 11pin 2.0V→3.3V, ∆10pin OUT
+ ∆GVCA + 4 + 6 — dB 11pin 2.0V→0.8V, ∆10pin OUT
VOMP
2.0 2.6 — VP-P Pin 23 and 25 IN, pin 10 OUT 3rd-harmonic distortion, when -30dB.
VNP1
—
0.4
1.0
µVrms
Input conversion for pin 23: 0.01µF + 10Ω at GND
Pin 8: “H”, pin 10 OUT.
VNP2
—
0.4
1.0
µVrms
Input conversion for pin 25: 0.01µF + 10Ω at GND
Pin 8: “L”, pin 10 OUT.
VHS2
0.0 — 2.2 V Pin 8 DC when CH2 operating
VHS1
2.8 — VCC V Pin 8 DC when CH1 operating
∆VODC – 20
0 + 20 mV 23, 25pin 0 IN, 8pin: “H” → “L”, ∆10pin OUT
V17L
0.0 — 1.0 V Pin 17 DC for PB mode
V17H
3.5 — VCC V Pin 17 DC for REC mode
RSWP
—
5 10 Ω Pin 20 ON resistance
V9L
0.0 — 2.2 V Pin 9 DC for SP mode
V9H
3.5 — VCC V Pin 9 DC for EP mode
GVP. EP 4.0 5.0 6.0 dB 23, 25pin 20.5dBµIN, 9pin: “H”, 10pin OUT
•Design reference values
Flying erase system (unless otherwise noted, Ta = 25°C, VCC = 11.0V)
Parameter
Symbol Min. Typ. Max. Unit
〈Flying erase mode〉
Supply current
Iq (FE)
—
12.0
—
mA
Pin 2 voltage
V2
—
5.5
—
V
Pin 3 voltage
V3
—
5.5
—
V
Pin 6 voltage
V6
—
1.0
—
V
Pin 32 voltage
V32
—
4.3
—
V
Oscillator frequency range
f32
8
—
13
MHz
Output amplitude range
υ32
—
2.8
—
VP-P
FE ON holding voltage
V5H
4.0
—
VCC
V
FE OFF holding voltage
V5L
0
—
0.5
V
∗ The values given above are design values, they are not ratings and are not guaranteed.
Conditions
5pin: “H”
Pin 31 inflow current
2pin DC
3pin DC
6pin DC
32pin DC
32pin OUT
32pin OUT
5pin DC, When FE ON
5pin DC, When FE OFF
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