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參數(shù)資料
| 型號(hào)： | LA70050W |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 CHANNEL, VIDEO PREAMPLIFIER, PQFP48 |
| 封裝： | 7 X 7 MM, QFP-48 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 641K |
| 代理商： | LA70050W |
LA70050W
No.A0215-3/15
PB Mode AGC-AMP/ Test is performed with the internal 10dB amplifier bypassed by adding an 18k
resistor
between pin 23 and ground.
Test Point
Ratings
Parameter
Symbol
IN
OUT
Conditions
min
typ
max
Unit
CH1
VAGC1
T46
CH2
VAGC2
T42
AGC output level
CH3
VAGC3
T38
T20
The output level for VIN = 38mVp-p, f = 10MHz
300
337
378
mVp-p
AGC control characteristics 1
VACTL1
T25
T20
The ratio of output of VIN = 300mVp-p, 10MHz and
VIN = 150mVp-p, 10MHz, VACTL1 = 20log (V2/V1)
-1
0
dB
AGC control characteristics 2
VACTL2
T25
T20
The ratio of output of VIN = 300mVp-p, 10MHz and VIN =
600mVp-p, 1 0MHz, VACTL2 = 20log (V3/V1)
0
+1.0
dB
AGC frequency characteristics
VFAGC
T25
T20
The ratio of the VIN = 300mVp-p,
f = 20MHz output and V1.
-2.0
0
+2.0
dB
Secondary harmonic
distortion of AGC
VHDAGC
T25
T20
The ratio of 20MHz (second component) of
VIN = 300mVp-p, f = 10MHz output and
10MHz (first component).
-45
-40
dB
AGC bypass characteristics
VABPS
T25
T20
The ratio of the VIN = 500mVp-p,
10MHz output and input.
-0.3
0
+0.3
dB
PB mode ENVDET
Test Point
Ratings
Parameter
Symbol
IN
OUT
Conditions
min
typ
max
Unit
10dB amplifier characteristics
VG10DB
T25
T20
The ratio of output of VIN = 300mVp-p, 10MHz,
29pin = low and VIN = 300mVp-p, 10MHz,
29pin = high, VG10DB = 20log (VLow/VHigh)
8.0
10.0
12.0
dB
Pre-LPF characteristics
VLPF
T25
T20
The ratio of output of VIN = 300mVp-p, 10MHz and
VIN = 300mVp-p, 20MHz, VLPF = 20log (VB/VA)
-5.0
-3.0
-1.0
dB
LPF-BYPASS characteristics
VLBPS
T25
T20
The ratio of the V19OPEN output (pin 19 open,
VIN = 300mVp-p, f = 20MHz) to the V19VCC output.
(pin 19 = VCC, VIN = 300mVp-p, f = 20MHz)
+3
dB
Pre-LPF characteristics 1
VLPF1
T25
T20
The ratio of VIN = 300mVp-p, 20MHz output VB, and
output VC at doubling the load of 19pin.
VLPF1=20log(VC/VB)
3.0
5.0
7.0
dB
Pre-LPF characteristics 2
VLPF2
T25
T20
The ratio of VIN = 300mVp-p, 20MHz output VB, and
output VD at 1/2 the load of 19pin.
VLPF2 = 20log(VD/VB)
-12
-10
-8
dB
CH1
VENV1
CH2
VENV2
Envelope detection
output terminal voltage
CH3
VENV3
T22 DC when no input.
0.1
0.4
1.0
V
Envelope detection
output terminal voltage 1
VESENS1
T25
T22
DC of T22 when inputting VIN = 200mVp-p
and f = 10MHz
1.0
1.5
2.0
V
Envelope detection
output terminal voltage 2
VESENS2
T25
T22
DC of T22 when inputting VIN = 800mVp-p
and f = 10MHz
2.7
3.0
3.2
V
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