參數(shù)資料
型號： SA1920
廠商： NXP SEMICONDUCTORS
元件分類： 無繩電話/電話
英文描述： Dual-band RF front-end
中文描述： TELECOM, CELLULAR, RF FRONT END CIRCUIT, PQFP48
封裝： 7 X 7 X 1.40 MM, PLASTIC, LQFP-48
文件頁數(shù)： 5/36頁
文件大?。?/td> 215K
代理商： SA1920
Philips Semiconductors
Product specification
SA1920
Dual-band RF front-end
1999 Mar 02
5
Table 1. POWER DOWN CONTROL
For
Applications Not Using a Frequency Doubler
, each state is
defined as follows:
DOUBLER
LO BUFFER
LNA
MIXER
T
MIXER
DRIVER
Control State
(Hi/Lo, Syn On, Rx On, Tx On, Strong Signal, X2
ON)
High
Band
Low
Band
High
Band
Low
Band
High
Band
Low
Band
High
Band
Low
Band
x000xx
Sleep
Off
Off
Off
Off
Off
Off
Off
Off
Off
010000
Low-Band LO Buffer on
Off
Off
On
Off
Off
Off
Off
Off
Off
011000
Low-Band Receive Normal
Off
Off
On
Off
On
Off
On
Off
Off
011010
Low-Band receive Strong Signal
Off
Off
On
Off
Off
Off
On
Off
Off
011100
Low-Band Transmit (Analog only)
Off
Off
On
Off
On
High Bias
Off
On
Off
On
010100
N/A
Off
Off
On
Off
Off
Off
Off
Off
On
110000
High-Band LO Buffer On
Off
On
Off
Off
Off
Off
Off
Off
Off
111000
High-Band Receive Normal
Off
On
Off
On
Off
On
Off
Off
Off
111010
High-Band Receive Strong Signal
Off
On
Off
Off
Off
On
Off
Off
Off
110100
N/A
Off
On
Off
Off
Off
Off
Off
On
Off
For
Applications Using a Frequency Doubler
, each state is
defined as follows:
DOUBLER
LO BUFFER
LNA
MIXER
T
X
MIXER
DRIVER
Control State
(Hi/Lo, Syn On, Rx On, Tx On, Strong Signal, X2
ON)
High
Band
Low
Band
High
Band
Low
Band
High
Band
Low
Band
High
Band
Low
Band
x000xx
Sleep
Off
Off
Off
Off
Off
Off
Off
Off
Off
010000
Transmit (Low and High Band)
Off
Off
On
Off
Off
Off
Off
Off
Off
011000
Low-Band Receive Normal
Off
Off
On
Off
On
Off
On
Off
Off
011010
Low-Band Receive Strong Signal
Off
Off
On
Off
Off
Off
On
Off
Off
011110
Low-Band Transmit (Analog only)
Off
Off
On
Off
On
High Bias
Off
On
Off
Off
010100
Low-Band Transmit (GSM)
Off
Off
On
Off
Off
Off
Off
Off
On
010001
Transmit (Low and High Band)
On
Off
On
Off
Off
Off
Off
Off
Off
011001
Low-Band Receive Normal
On
Off
On
Off
On
Off
On
Off
Off
011011
Low-Band Receive Strong Signal
On
Off
On
Off
Off
Off
On
Off
Off
011111
Low-Band Transmit(Analog only)
On
Off
On
Off
On
High Bias
Off
On
Off
Off
111001
High-Band Receive Normal
On
On
On
On
Off
On
Off
Off
Off
111011
High-Band Receive Strong Signal
On
On
On
Off
Off
On
Off
Off
Off
110101
High-Band Transmit (GSM)
On
On
On
Off
Off
Off
Off
On
Off
NOTE:
“0” is low logic state; “1” is high logic state.
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