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参数资料
| 型号： | LA7791T |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封装： | 0.225 INCH, TSSOP-20 |
| 文件页数： | 2/4页 |
| 文件大小： | 63K |
| 代理商： | LA7791T |
LA7791T
No.A1144-2/4
Recommended Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended Supply Voltage
VCC
Pin 2,19
5.0
V
Operating Supply Voltage Range
VCC op
Pin 2,19
4.75 to 5.25
V
Electrical Characteristics at Ta
= 25°C, VCC = 5V, Vin = 29dBmV diff., f = 20MHz , Rin = 75, Rout = 75,
unless otherwise noted.
Ratings
Parameter
Symbol
Pin No.
Conditions
min
typ
max
Unit
Quiescent Current 1
ICCO-1
2,15,16,19
0 to 15dB attenuation
180
mA
Quiescent Current 2
ICCO-2
2,15,16,19
16 to 63dB attenuation
90
mA
Quiescent Current 3
ICCO-ps
2,15,16,19
Power Save Mode (TXEN:V18=0V)
6.6
mA
Quiescent Current 4
ICCO-swsd
2,15,16,19
Software Shut Down Mode (D7=0)
3.4
mA
Quiescent Current 5
ICCO-sd
2,15,16,19
Shut Down Mode (SD:V12=0V)
1.2
mA
Input Characteristics
Input Impedance
Zin
5,6
1.6
2
2.4
k
Overall Characteristics
Gain Flatness
Rfrq
5,6,15,16
Vout=60dBmV Diff,
f=5 to 42MHz, Ref at 20MHz
0.5
dB
Gain Flatness
Rfrq
5,6,15,16
Vout=60dBmV Diff,
f=5 to 65MHz, Ref at 20MHz
1.5
2.0
dB
Gain Control Range
Gcont
5,6,15,16
f=20MHz, Differential output
63
dB
Maximum Gain
Gmax
5,6,15,16
f=20MHz, Differential output
31.2
33.7
36.2
dB
Minimum Gain
Gmin
5,6,15,16
f=20MHz, Differential output
-29.3
dB
Gain Step
Gstep
5,6,15,16
f=20MHz, Differential output
0.7
1
1.3
dB
IM2
5,6,15,16
40MHz and 40.2MHz
54dBmV/tone Diff.
50
65
dBc
IM3
5,6,15,16
40MHz and 40.2MHz
54dBmV/tone Diff.
46
62
dBc
Output Characteristics
Output Signal Level
Vo
5,6,15,16
Differential output
63
dBmV
Output Noise Level
Vn
5,6,15,16
Differential output
187
300
nV
√Hz
Switching transients voltage
Vtran
5,6,15,16
Differential output
5
100
mV
Power Save Characteristics (Low active: Low---Power Save mode)
Power Save Attenuation
Att-ps
5,6,15,16, 18
Vin=29dBmV, 5 to 70MHz, Vin/Vout
59
85
dB
Setting Time
Tset
15,16,18
TXEN(18pin) on/off
2
us
Power Save on Voltage
Vps-on
15,16,18
Low, TXEN off
0.8
V
Power Save off Voltage
Vps-off
15,16,18
High, TXEN on
2.0
VCC
V
Shut Down Characteristics (Low active: Low---Shut Down mode)
Shut Down on Voltage
Vshut-on
12,15,16
Low, SD(12pin) on
0.8
V
Shut Down off Voltage
Vshut-off
12,15,16
High, SD(12pin) off
2.0
VCC
V
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