BA7181 データシートの表示（PDF） - ROHM Semiconductor
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BA7181 Datasheet PDF : 8 Pages
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Video ICs
BA7181FS
Parameter
Symbol Min. Typ. Max. Unit
〈Playback system〉 (Fig. 1 measurement circuit, pin 8: “H” )
Output DC offset
∆VODC —
0 150 mVP-P
Input conversion noise∗ VNIN — 0.25 — µVrms
AGC output level
VAGC 250 300 350 mVP-P
Conditions
Measurement
circuit
Pin 14 output DC offset for pin 1: H / L
Rg = 10Ω, input conversion of pin 14 output noise
VIN = 0.3mVP-P, pin 18 output measurement
Fig.1
Fig.1
Fig.1
AGC control sensitivity ∆VAGC —
AGC amp frequency
characteristic∗
∆GVAF —
PB switch ON resistance∗ RON7 —
0.3 2.0 dB
0.5 — dB
4—Ω
Pin 18 output difference for VIN = 0.15
~ 0.6mVP-P
Pin 18 output level difference for
f = 8.0 / 1.0MHz, VIN = 0.3mVP-P
Pin 7 impedance
Fig.1
Fig.1
Fig.1
PRE CH 2 threshold voltage VTH1H 3.5 — VCC V
PRE CH 1 threshold voltage VTH1L 0 — 1.2 V
ENVE residual voltage VENV1 — 0.7 1.0 V
Pin 1 DC voltage for channel 2 operation
Pin 1 DC voltage for channel 1 operation
Pin 13 output measurement with no signal
Fig.1
Fig.1
Fig.1
ENVE output level
VENV2 2.4 2.9 3.4 V
ENVE saturation voltage VENV3 4.0 4.5 — V
PB mode holding voltage VTH10H 3.8 — VCC V
EE mode holding voltage VTH10M 2.2 — 2.8 V
REC mode holding voltage VTH10L 0 — 1.2 V
Pin 13 output measurement when pin 14
output = 400mVP-P
Pin 13 output measurement for large signal
Pin 8 DC voltage for PB mode
Pin 8 DC voltage for REC MUTE mode
Pin 8 DC voltage for REC mode
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Note: dBc: dB below carrier (used to express relative level from carrier reference for convenience sake).
∗ Design reference values.
(unless otherwise noted, Ta = 25°C, VCC = 5.0V, f = 4.0MHz and IOAR = 30mAP-P)
Parameter
Symbol Min. Typ. Max. Unit
〈Recording system〉 (Pin 8 in Fig. 2 measurement circuit “L” )
Supply current
Iq(R)
—
72 110 mAP-P
Recording AGC level
IOAR 27 30 33 mA
AGC control sensitivity
∆IOAR — 0.3 1.5 dB
REC Amp frequency
characteristic∗
2nd harmonic distortion∗
3rd harmonic distortion∗
Cross modulation distortion∗
Maximum output level
Recording current load
characteristic∗
Mute attenuation ratio
AGC mode holding voltage
AGC mode holding voltage
∗ Design reference values.
∆IOAF — – 1.5 — dB
2HDR
3HDR
CMDR
IOMR
— – 45
— – 50
— – 50
40 50
— dBc
— dBc
— dBc
— mAP-P
∆IORL — – 0.35 — dB
MUR — – 45 – 38 dBc
VTH15H 2.7
— VCC
V
VTH15L
0
— 1.2 V
Conditions
No signal
Pin 12 input = 125mVP-P, pin 7 output measurement
Pin 7 output level difference for pin 12
input = 62.5mVP-P and 250mVP-P
Pin 7 output level difference for f = 8.0 / 1.0MHz,
pin 12 input = 125mVP-P
Pin 12 input = 125mVP-P, 8MHz spurious
Pin 12 input = 125mVP-P, 12.0MHz spurious
4.0MHz ± 630kHz spurious
When pin 7 output 2nd harmonic distortion is – 30dB
Pin 7 output level difference for load L: 8.2 ~ 12µH
Pin 7 output level difference for pin 8: M / H
Pin 15 DC voltage to maintain recording AGC operation
Pin 15 DC voltage to maintain recording AGC stopped
Measurement
circuit
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
Fig.2
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