- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376306 > RF142 (Electronic Theatre Controls, Inc.) Heterojunction Bipolar Transistor Power Amplifier Dual-Band Controller for GSM and PCS Applications PDF資料下載
參數(shù)資料
| 型號(hào)： | RF142 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Heterojunction Bipolar Transistor Power Amplifier Dual-Band Controller for GSM and PCS Applications |
| 中文描述： | 異質(zhì)結(jié)雙極晶體管功放雙頻控制器，用于GSM和PCS應(yīng)用 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 456K |
| 代理商： | RF142 |
RF142
2
September 7, 2000
Conexant
100774A
Proprietary Information and Specifications are Subject to Change
Table 1. RF142 Signal Description
Pin #
Name
Description
Pin #
Name
Description
1
GND1
Ground
11
NC
No connect
2
VREF
Output reference voltage
12
NC
No connect
3
VMP
Midpoint voltage for gain shaper
13
CAP+
Integrator time constant Cap+
4
VAPC+
Tx power control positive polarity
14
CAP–
Integrator time constant Cap–
5
VAPC–
Tx power control negative polarity
15
AUX+
Aux output +
6
ENABLE
Device enable (active high)
16
AUX–
Aux output –
7
RFPC+
RF input to detector positive polarity
17
BAND
Band select. High selects VPCDCS as the output control
pin; low selects VPCGSM as the output control pin.
8
RFPC–
RF input to detector negative polarity
18
VPCDCS
1800 MHz/1900 MHz power amplifier control voltage
9
GND2
Ground
19
VPCGSM
900 MHz power amplifier control voltage
10
VCC1
Power supply
20
VCC2
Vcc for the output stage
C013
Gain Shaper
Logarithmic
Detector
Amp 1
RFPC+
VPCGSM
VPCDCS
RFPC–
VCC2
VCC1
GND
VAPC- VAPC+
CAP- CAP+
Amp 2
AUX–
AUX+
VREF
VMP
ENABLE
BAND
DC Bias
Circuitry
Figure 2. RF142 Block Diagram
Technical Description
The RF142 dual-band PA controller is designed to control HBT
PAs. It combines the functions of a broadband RF detector and
error amplifier/integrator to provide transmit burst control for
dual or multi-band HBT PAs. It has two separate dedicated
output stages and pins for GSM900MHz PAs and
GSM1800/1900 MHz PAs. The device, when connected to dual
or multi-band HBT PAs with a coupler, forms a loop to control
the transmit power in a dual or multi-band wireless application.
The transmit power is controlled by a single balanced analog
reference voltage input to the RF142.
The RF142 has low power consumption and operates off a
three-cell battery pack (2.7 V to 5.0 V). Extremely low standby
current of 20
μ
A maximizes the standby time of a GSM handset.
The absolute maximum ratings of the RF142 are provided in
Table 2, the operating conditions are specified in Table 3, and
electrical specifications are provided in Table 4. Figure 3 shows
the diagram for a typical application circuit using the RF142 PA
controller. Figure 4 shows the package dimensions for the 20-
dimensions.
RF Detector
. An external RF coupler is required at the PA
output to couple the RF output from the PA to the RF logarithmic
detector input. The input to the logarithmic detector must be
within the range –40 dBm to +10 dBm. The coupled signal is fed
to the input of the RF power detector. The output from the
detector is a DC voltage that is proportional to the RF power (in
dBm) at the RFPC input to the device. The dynamic range of the
detector is 50 dB.
Integrating Error Amplifier
. The integrating error amplifier
(Amp2) amplifies and integrates the voltage difference between
the detector output and the power control input, VAPC. The
integrator time constant is set by the two external capacitors
connected from AUX pins to the CAP pins.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RF212 | Image-Reject Front End for Dual or Tri-Band GSM Applications |
| RF212-11 | Image-Reject Front End for Dual or Tri-Band GSM Applications |
| RF212-21 | Image-Reject Front End for Dual or Tri-Band GSM Applications |
| RFL6000 | MSM6150 CHIPSET SOLUTION |
| RFR6000 | MSM6150 CHIPSET SOLUTION |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RF1425-000 | 制造商:TE CONNECTIVITY RAYCHEM-POLYSWITCH 功能描述:RLINE / RGEF300-1 |
| RF142C1100 | 制造商:E-Switch Inc 功能描述:SWITCH ROCKER NON ILLUMINATED |
| RF1432C | 功能描述:信號(hào)調(diào)節(jié) 319.50MHz Narrowband Receiver Front End RoHS:否 制造商:EPCOS 產(chǎn)品:Duplexers 頻率:782 MHz, 751 MHz 頻率范圍: 電壓額定值: 帶寬: 阻抗:50 Ohms 端接類型:SMD/SMT 封裝 / 箱體:2.5 mm x 2 mm 工作溫度范圍:- 30 C to + 85 C 封裝:Reel |
| RF1436-000 | 制造商:TE Connectivity 功能描述:- Trays 制造商:TE Connectivity 功能描述:GAS TUBE 7MM 350V 20% 10KA RAD 制造商:TE CONNECTIVITY RAYCHEM-POLYSWITCH 功能描述:GDT / GTCR37-351M-R10 |
| RF1437-000 | 功能描述:可復(fù)位保險(xiǎn)絲 6V 1.5A-HD 40A MAX (R) RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。