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參數(shù)資料
| 型號(hào)： | SA1921 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | Ceramic Multilayer Capacitor; Capacitance:100000pF; Capacitance Tolerance:+/- 5 %; Working Voltage, DC:50V; Dielectric Characteristic:X7R; Package/Case:0805; Series:VJ; Leaded Process Compatible:Yes; Mounting Type:Surface Mount |
| 中文描述： | TELECOM, CELLULAR, RF FRONT END CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 X 1.40 MM, PLASTIC, QFP-48 |
| 文件頁(yè)數(shù)： | 5/36頁(yè) |
| 文件大?。?/td> | 507K |
| 代理商： | SA1921 |
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Philips Semiconductors
Product specification
SA1921
Satellite and cellular dual-band RF front-end
1999 Mar 02
5
Table 1. POWER DOWN CONTROL
LO BUFFER
LNA
MIXER
T
X
MIXER
DRIVER
Control State
(Hi/Lo, Syn On, Rx On, Tx On, Strong Signal)
High
Band
Low
Band
High
Band
Low
Band
High
Band
Low
Band
High
Band
Low
Band
x000x
Sleep
Off
Off
Off
Off
Off
Off
Off
Off
01000
Low-Band LO Buffer on
Off
On
Off
Off
Off
Off
Off
Off
01100
Low-Band Receive Normal
Off
On
Off
On
Off
On
Off
Off
01101
Low-Band receive Strong Signal
Off
On
Off
Off
Off
On
Off
Off
01110
Low-Band Transmit (Analog only)
Off
On
Off
On
High Bias
Off
On
Off
On
01010
N/A
Off
On
Off
Off
Off
Off
Off
On
11000
High-Band LO Buffer On
On
Off
Off
Off
Off
Off
Off
Off
11100
High-Band Receive Normal
On
Off
On
Off
On
Off
Off
Off
11101
High-Band Receive Strong Signal
On
Off
Off
Off
On
Off
Off
Off
11010
N/A
On
Off
Off
Off
Off
Off
On
Off
NOTE:
1. “0” is low logic state; “1” is high logic state.
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