NTE NTE1558

NTE1558
Integrated Circuit
Switchless Rec/PlayBack Amp for VCR
Features:
D Contians all recording/playback amplifiers required for VTR audio signal system.
D Capable of setting each mode of recording, playback an muting by changing only the control
pin voltage
D Very small pop noise occurring at the time of mode selection
D Easy to adjust recording level, playback senisitivity
D Improvement in reliability due to electronic switch
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700mV
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C
Electrical Characteristics: (TA = +25°C, VCC = 9V, f = 1kHz unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Current Dissipation (Playback)
ICCP
5
8.5
13
mA
Current Dissipation (Recording)
ICCR
6
10
15
mA
Overall Gain for Playback
VG(1)
PB In to Line Out, VO = 0dBm(P)
75
80
85
dB
Overall Gain for Recording
VG(2)
MIC In to Line Out, VO = 0dBm(R)
64
68
72
dB
Line Amp. Max. Output Voltage
VomL
THD = 3%(P/R)
1.9
2.3
−
V
Recording Amp. Max. Output Voltage
VomR
THD = 3%
1.9
2.3
−
V
Mic. Amp. Closed Loop Gain
VGCM
VO = 0dBm(R)
35.5
37.5
39.5
dB
Recording Amp. Closed Loop Gain
VGCR
VO = 0dBm(R)
11.5
13
14.5
dB
Equalizier Amp. Open Loop Gain
VGOE
VO = 0dBm(P)
70
90
−
dB
Recording Amp. Open Loop Gain
VGOR
VO = 0dBm(R)
38
42
−
dB
Equalizer Amp. Input Impedance
ZINE
(P)
40
55
−
kΩ
Mic. Amp. Input Impedance
ZINM
(R)
40
55
−
kΩ
Equalizier Amp. Noise
Voltage Referred to Input
VNINE
Rg = 2.2kΩ
DIN AUDIO F−(P)
−
1
18
μV
Mic. Amp. Noise Voltage
Referred to Input
VNINM
Rg = 2.2kΩ
DIN AUDIO F−(R)
−
1
2
μV
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 9V, f = 1kHz unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Leak Output for Playback Muting
VO(PM)
PB in to Line Out, VIN =
−40dBm(PM)
−
−40
−30
dBm
Leak Output for Recording Muting
VO(RM)
PB in to Line Out, VIN =
−40dBm(RM)
−
−46
−36
dBm
Output Voltage II for ALC Operation
VOAII
Mic In to Line Out, VIN = −60dBm(R)
0.46
0.58
0.73
V
Output Voltage I for ALC Operation
VOAI
Mic In to Line Out, VIN = −30dBm(R)
0.60
0.80
1.10
V
Line Output Distortion
for ALC Operation
THDA
VIN = −30dBm, BW = 500 to 5kHz(R)
−
0.4
1.0
%
Recording Amp. Distortion
THDR
VO = 9dB (R)
−
0.2
0.6
%
Line Amp. Outisde Noise
VNOL
DIN Audio F. (M)
−
−68
−58
dBV
Note *. (P), (R), (PM), and (RM) represent the playback mode, recording mode, and muting mode
respectively.
Pin Connection Diagram
Pre−Bypass 1
18 MIC Input
PB Input 2
17 ALC Output
PB NFB 3
16 ALC Input
Pre−Output 4
15
VCC
GND 5
14 P/R Cont Input
Filter 6
13 Rec Output
Line NFB 7
12 Rec Input
Line Input 8
11 Rec NFB
Line Input 9
10 Line Output
18
10
1
9
.870 (22.1) Max
.250
(6.35)
.150
(3.8)
.100 (2.54)
.800 (20.3)
.125 (3.17) Min