參數(shù)資料
型號(hào)： S1L9226X
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： RF AMP & SERVO SIGNAL PROCESSOR
中文描述： 射頻放大器
文件頁(yè)數(shù)： 47/56頁(yè)
文件大?。?/td> 454K
代理商： S1L9226X
RF AMP & SERVO SIGNAL PROCESSOR
S1L9226X
5
PRELIMINARY
RF EQUALIZE & AGC
The modulator output, which had the Veqc's Tanh term multiplied at the input, passes through the approximately
3X gain terminal to the ARF pad. On the one hand, the output is - rectified as it passes through the HPF having
50kHz pole frequency and follows the peak envelope the RF level. At this time, the pole frequency of the HPF is
set to 50kHz so that the 3T - 11T component can pass through without attenuation. The RF level peak value is
integrated at the 's CAP node after wave rectification. If this peak value is less than the already set voltage
comparison, sinking current is output and, if not, sourcing current is output. The maximum peak value at this time is
10uA, which is I/V converted and applied as the modulator control voltage. Under the sinking condition, the Vcagc
increases to 1outx10K and multiplied by Tanh (1-X); the sourcing condition, Vcagc decreases to Iout x10K and
multiplied by Tanh (1+X), where X is (Veqc/2Vt).
Overall, after detecting the 3T and 11T levels by full-wave rectification, it is compared to Tanh using the modulator
and multiplied to the gain to realize the wave-form equalize. The above is related to the AGC concept, which
means that a specific RF level is always taken
Modulator
3x Gain AMP
HPF
(3dB: 50kHz)
I/V Converter
Control Range
I * 10K
Full Wave Rectifier
(RF Peak Envelope)
Iout = 2gm (Vid/2)
= gm * Vid
= (Iref) * (Vid/Vt)
= Iref * (Vp-Vn)/Vt
if Vn > Vp
Vcagc Increment (tanh (1-X))
if Vn < Vp
Vcagc Decrement (tanh (1+X))
tanh
±
0.1 =
±
0.1
tanh
±
0.5 =
±
0.462
tanh
±
0.1 =
±
0.7
tanh
±
2.0 =
±
0.964
Vref
Vp
Vn
V = I/C (115pF)
EQO-AGC Output
Vin (t)
Vcagc (t)
Vo (t)
+
-
Vin(t) = 0.73x (RFO)
Vo(t) =
R6 (5.5K)
(
2Vt
Vcagc(t)
)
相關(guān)PDF資料
PDF描述
S1L9226X01-Q0R0 RF AMP & SERVO SIGNAL PROCESSOR
S1L9251X CD-ROM 48X RF AMP
S1M8662A CDMA/PCS/GPS Triple Mode IF/ baseband IC
S1M8662AX01-F0T0 CDMA/PCS/GPS Triple Mode IF/ baseband IC
S1M8836 FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S1L9226X01 制造商:SAMSUNG 制造商全稱(chēng):Samsung semiconductor 功能描述:RF AMP & SERVO SIGNAL PROCESSOR
S1L9226X01-Q0R0 制造商:SAMSUNG 制造商全稱(chēng):Samsung semiconductor 功能描述:RF AMP & SERVO SIGNAL PROCESSOR
S1L9251X 制造商:SAMSUNG 制造商全稱(chēng):Samsung semiconductor 功能描述:CD-ROM 48X RF AMP
S1LB_FDSS517 WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
S1LL 制造商:HY 制造商全稱(chēng):HY ELECTRONIC CORP. 功能描述:SURFACE MOUNT GLASS PASSIVATED RECTIFIERS
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