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參數(shù)資料
| 型號： | LA7790M |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 封裝： | MFP-24 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 174K |
| 代理商： | LA7790M |
No. 5689-2/14
LA7790M
Parameter
Symbol
Conditions
Ratings
Unit
Maximum power supply voltage
VCC max
Pins 1, 10, and 24
7
V
Circuit voltage
Vmax
Pins 1, 12, 17, 20, 21, and 23
VCC
V
Circuit current
I11
Output lead-in current
1
mA
I19
2
mA
Allowable power dissipation
Pd max
Ta
≤ 54°C
650
mW
Operating ambient temperature
Topr
–20 to +70
°C
Storage temperature
Tstg
–55 to +150
°C
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Current drain
Circuit current 1
I1
With no signal, pin 1
26
33
44
mA
Circuit current 2
I24 + I10
With no signal, pins 24 and 10
44
55
73
mA
Modulator fo: f(V19) = 25 MHz
Output frequency range
f(V19)
5
70
MHz
Output signal level
V19(DSB)
Note 1: V20 = V23 = GND,
–7
–4
–2
dBm
V12 = V17 = V21 = VCC, S1 = A
Output harmonic distortion
V19(HD2)
Note 2: V20 = V23 = GND,
40
dB
V19(HD3)
V12 = V17 = V21 = VCC, S1 = A
35
dB
Output secondary harmonic distortion
V19(2fo)
Note 3: V20 = V23 = GND,
20
dB
V12 = V17 = V21 = VCC, S1 = A
Output tertiary harmonic distortion
V19(3fo)
Note 3: V20 = V23 = GND,
8
dB
V12 = V17 = V21 = VCC, S1 = A
Carrier suppression ratio
V19(fo)
Note 4: V20 = V23 = GND,
30
dB
V12 = V17 = V21 = VCC, S1 = A
Sideband suppression ratio
V19(SSB)
Note 5: V20 = V23 = GND,
30
dB
V12 = V17 = V21 = VCC, S1 = A
I input level
V4.5
V4.5 = |V4 — V5|
500
mVp-p
Q input level
V8.9
V8.9 = |V8 — V9|
500
mVp-p
I input DC voltage
V4, 5
External DC bias voltage
1.9
2.1
2.3
V
Q input DC voltage
V8, 9
External DC bias voltage
1.9
2.1
2.3
V
Reference voltage
V6
Internal DC bias voltage
1.9
2.1
2.3
V
Variable attenuator
Minimum gain control voltage
V21
V12 = V17 = VCC, V20 = V23 = GND, S1 = A
0
0.5
V
Gain range
V19(GR)
Note 6: V20 = V23 = GND, V12 = V17 = VCC,
45
dB
S1 = A, V21 = VCC → 0.5 V
Modulator output impedance
R19
V12 = V17 = V21 = VCC,
80
120
160
V20 = V23 = GND, S1 = A
VCO
Oscillator frequency range
f(osc)
V12 = V17 = V21 = VCC,
20
280
MHz
V20 = V23 = GND, S1 = A
VCO output level
V11(fo)
V12 = V17 = V21 = VCC,
500
700
900
mVp-p
V20 = V23 = GND, S1 = A
VCO output impedance
R11
V12 = V17 = V21 = VCC,
200
300
400
V20 = V23 = GND, S1 = A
Band switch
Band switch 1 “H” level
V17H
Note 7: V12 = V21 = VCC,
4
V
f(V19) = 25 MHz
V20 = V23 = GND, S1 = A
Band switch 1 “L” level
V17L
Note 7: V12 = V21 = VCC,
1
V
f(V19) = 12.5 MHz
V20 = V23 = GND, S1 = A
Operating Characteristics at Ta = 25°C, VCC = 5.0 V
Parameter
Symbol
Conditions
Ratings
Unit
Operating power supply voltage
VCC op
Pins 1, 10, and 24
4.5 to 5.5
V
Recommended Conditions at Ta = 25°C
Continued on next page.
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