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BA7181FS Datasheet(Fiches technique) 3 Page - Rohm

Numéro de pièce BA7181FS
Description  2-channel PRE / REC amplifier with auto-tracking interface
Télécharger  8 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
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3
Video ICs
BA7181FS
Note: dBc: dB below carrier (used to express relative level from carrier reference for convenience sake).
Design reference values.
Parameter
Symbol Min.
Typ. Max.
Unit
Conditions
〈Playback system〉
Output DC offset
Input conversion noise
AGC output level
AGC control sensitivity
AGC amp frequency
characteristic
PB switch ON resistance
PRE CH 2 threshold voltage
PRE CH 1 threshold voltage
ENVE residual voltage
ENVE output level
ENVE saturation voltage
PB mode holding voltage
EE mode holding voltage
REC mode holding voltage
Pin 14 output DC offset for pin 1: H / L
Rg = 10
Ω, input conversion of pin 14 output noise
VIN = 0.3mVP-P, pin 18 output measurement
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
Pin 1 DC voltage for channel 2 operation
Pin 1 DC voltage for channel 1 operation
Pin 13 output measurement with no signal
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
∆VODC
0
150 mVP-P
Fig.1
VNIN
0.25
µVrms
Fig.1
VAGC
250
300
350 mVP-P
Fig.1
∆VAGC
0.3
2.0
dB
Fig.1
∆GVAF
0.5
dB
Fig.1
RON7
—4
Fig.1
VTH1H
3.5
VCC
V
Fig.1
VTH1L
0
1.2
V
Fig.1
VENV1
0.7
1.0
V
Fig.1
VENV2
2.4
2.9
3.4
V
Fig.1
VENV3
4.0
4.5
V
Fig.1
VTH10H
3.8
VCC
V
Fig.1
VTH10M
2.2
2.8
V
Fig.1
VTH10L
0
1.2
V
Fig.1
Measurement
circuit
(Fig. 1 measurement circuit, pin 8: “H” )
(unless otherwise noted, Ta = 25°C, VCC = 5.0V, f = 4.0MHz and IOAR = 30mAP-P)
Parameter
Symbol Min.
Typ.
Max.
Unit
〈Recording system〉
Supply current
Recording AGC level
AGC control sensitivity
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
Iq(R)
72
110
mAP-P
Fig.2
IOAR
27
30
33
mA
Fig.2
∆IOAR
0.3
1.5
dB
Fig.2
∆IOAF
– 1.5
dB
Fig.2
2HDR
– 45
dBc
Fig.2
3HDR
– 50
dBc
Fig.2
CMDR
– 50
dBc
Fig.2
IOMR
40
50
mAP-P
Fig.2
∆IORL
– 0.35
dB
Fig.2
MUR
– 45
– 38
dBc
Fig.2
VTH15H
2.7
V
Fig.2
VTH15L
0
1.2
V
Fig.2
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 ~ 12
µH
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
Conditions
VCC
Measurement
circuit
(Pin 8 in Fig. 2 measurement circuit “L” )
Design reference values.




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