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參數(shù)資料
| 型號(hào)： | HA12157NT |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System) |
| 中文描述： | 音頻信號(hào)處理器（杜比B / C型與錄音系統(tǒng)星期日的盒式收錄機(jī)） |
| 文件頁(yè)數(shù)： | 5/57頁(yè) |
| 文件大?。?/td> | 463K |
| 代理商： | HA12157NT |
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HA12155NT/HA12157NT
Rev.4, Jun. 1997, page 5 of 57
Electrical Characteristics
(Ta = 25°C V
CC
= 14 V Dolby level 300 mVrms) (cont)
Item
Symbol
Min
Typ
Max
Unit
Test conditions
Notes
Volume mute
G
VVR (MUT)
—
—
–80.0 dB
Vin = 3 Vrms, f = 1 kHz
Max-input level to volume Vin max (VR)
11.0
12.6
—
dBs
f = 1 kHz, THD = 1%,
V
CC
= 12 V
Vin = 100 mVrms, f = 1
kHz, A-WTG
Volume S/N
S/N (VR)
78.0
84.0
—
dB
Volume THD
THD (VR)
—
0.04
0.3
%
Vin = 100 mVrms, f = 1
kHz
Equalizer gain
G
V EQ (500)
13.0
15.0
17.0
dB
Vin = 77.5 mVrms,
f = 500 Hz
G
V EQ (1K)
13.0
15.0
17.0
Vin = 77.5 mVrms,
f = 1 kHz
G
V EQ (5K)
14.5
16.5
18.5
Vin = 77.5 mVrms,
f = 5 kHz
G
V EQ (10K)
18.5
20.5
22.5
Vin = 77.5 mVrms,
f = 10 kHz
G
V EQ (20K)
29.5
32.0
34.5
Vin = 77.5 mVrms,
f = 20 kHz
Equalizer maximum input Vin max (EQ)
–8.0
–7.0
—
dBs
f = 1 kHz, THD = 1%,
V
CC
= 12 V
Rg = 5.1 k
, A-WTG
Vin = 77.5 mVrms,
f = 1 kHz
*1
Equalizer S/N
S/N (EQ)
57.0
62.0
—
dB
Equalizer THD
THD (EQ)
—
0.2
0.5
%
Equalizer offset
Vofs (EQ)
–400
0.0
+400 mV
no signal
Level meter output
LM (0 dB)
2.60
2.85
3.10
V
Vin = 0 dB, f = 1 kHz
*2
LM (12 dB)
3.60
3.90
4.20
V
Vin = 12 dB, f = 1 kHz
Level meter output
LM (–20 dB)1
0.80
1.10
1.40
V
Vin = –20 dB, f = 1 kHz
*2
LM (–20 dB)2
2.55
3.0
3.15
V
Vin = –20 dB, f = 1 kHz,
–20 dB range
Level meter offset
LMofs 1
—
150
300
mV
no signal
LMofs 2
—
200
350
no signal, –20 dB range
Notes: 1. HA12155 V
CC
= 9.5 V, HA12157 V
CC
= 12 V
2. 0 dB = PB-OUT level
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