- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382705 > U4314B Logarithmic AM Demodulator/RSSI PDF資料下載
參數(shù)資料
| 型號(hào)： | U4314B |
| 英文描述： | Logarithmic AM Demodulator/RSSI |
| 中文描述： | 對(duì)數(shù)的AM解調(diào)器/接收信號(hào)強(qiáng)度指示 |
| 文件頁(yè)數(shù)： | 3/7頁(yè) |
| 文件大?。?/td> | 73K |
| 代理商： | U4314B |
TELEFUNKEN Semiconductors
U4314B
Rev. A1: 26.06.1995
3 (7)
Electrical Characteristics
V
S
= 5 V, T
amb
= 25
°
C, f
in
= 10.7 MHz unless otherwise specified. Test circuit see figure 8. IF voltage levels are referred
to the input of the matching network and therefore approximately 5.6 dB higher than referred to Pin 5.
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
Characteristics
Supply voltage range
Supply current
Bandgap
Regulated voltage (without
external load)
Source resistance
Output current
External capacitor
Power supply rejection
ratio
IF amplifier
Input resistance
Input capacitance
–3 dB limiting point
Maximum AM input
voltage
AM
out
quiescent current
Maximum AM
out
current
Pin 8
Pin 8
V
S
I
S
3
12
1.25
V
0.8
mA
Pin 7
V
ref
2.3
2.4
2.5
V
Pin 7
Pin 7
Pin 7
Pin 7
R
ref
I
ref
C
ref
psrr
2
5
5
mA
F
dB
4.7
60
f = 50 Hz
Pin 5
Pin 5
Pin 5
Pin 5
R
in
C
in
V
IFin
V
IFinmax
200
330
5
36
96
650
pF
26
46
dB V
dB V
R
load
= 10 k
V
IFin
= 96 dB V,
R
load
= 10 k
Pin 4
I
AMout
I
AMoutmax
10
75
22
105
38
125
Pin 4
Circuit Description
General functions
The integrated circuit U4314B includes the following
functions: IF-amplifier, logarithmic RSSI / AM demodu-
lator and voltage-regulator.
The 10.7 MHz IF-signal from the front end passes the in-
tegrated IF-amplifier which operates to a logarithmic
RSSI / AM-demodulator. A logarithmic demodulator
was implemented to avoid settling time problems ef-
fected by use of an AGC. The temperature compensated
reference voltage of 2.4 V is externally available. The
value of the external blocking capacitor can be adapted to
the maximum expected load current out of the voltage
regulator. The total supply current is typically 0.8 mA
plus this load current.
95 10216
1, 2, 3, 6
Figure 3. Pin 1, 2, 3, 6 GND
7
95 10219
4
Figure 4. Pin 4 AM
out
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| U4314B-AFP | Logarithmic AM Demodulator/RSSI |
| U4459B | IF Amplifier for Cable DVB Processing |
| U4460BG-D | Rail to rail micropower BiCMOS comparators |
| U4460BG-M | Rail to rail micropower BiCMOS comparators |
| U4460BG | Video IF Amplifier with FPLL Demodulation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U4314B-AFP | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Logarithmic AM Demodulator/RSSI |
| U4316 | 功能描述:開關(guān)配件 PushButton Cap Red Rnd,Concave RoHS:否 制造商:C&K Components 類型:Cap 用于:Pushbutton Switches 設(shè)計(jì)目的: |
| U4317/1 | 制造商:APEM 功能描述: |
| U431-E3 | 功能描述:JFET Dual Matched RoHS:否 制造商:ON Semiconductor 晶體管極性:N-Channel 漏極電流（Vgs=0 時(shí)的 Idss）:50 mA 漏源電壓 VDS:15 V 閘/源擊穿電壓: 漏極連續(xù)電流:50 mA 配置: 安裝風(fēng)格: 封裝 / 箱體:SC-59 封裝:Reel |
| U431-E3 | 制造商:Vishay Siliconix 功能描述:JFET |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。