參數(shù)資料
型號(hào): LTC6602IUF#PBF
廠商: Linear Technology
文件頁數(shù): 17/28頁
文件大小: 0K
描述: IC FILTER BANDPASS/LOWPASS 24QFN
標(biāo)準(zhǔn)包裝: 91
濾波器類型: 帶通
頻率 - 截止或中心: 300kHz
濾波器數(shù): 2
濾波器階數(shù): 5th
電源電壓: 2.7 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 24-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 24-QFN 裸露焊盤(4x4)
包裝: 管件
產(chǎn)品目錄頁面: 1325 (CN2011-ZH PDF)
LTC6602
24
6602fc
APPLICATIONS INFORMATION
Figure 18. Filter Transient Response to a Tag Symbol Sequence
detecting the symbol sequence (in an RFID environment,
noise will be superimposed on the output signal). In
general, increasing the lowpass fCUTOFFand/ordecreasing
Figure 17. An Adaptable RFID Baseband Filter with SPI Control
6602 F17
LTC6602
V+IN
+INA
–INA
+INB
–INB
RBIAS
VOCM
MUTE
GAIN0(D0)
GAIN1
GND
–OUTA
+OUTA
–OUTB
+OUTB
CLKIO
SER
CLKCNTL
HPFO(SDO)
HPFI(SDI)
LPFO(SCLK)
LPF1(CS)
V+A V+D
68.1k
0.1F
0.1F
5V
3V
1
2
16
24
18
19
12
13
15
17
5
9
6
11
10
23
7
8
4
3
20
21
22
14
25
CS1
CS2
SCK SDI
SPI CONTROL OF LTC6602
SETS THE FILTER GAIN AND THE
LOWPASS AND HIGHPASS
DIVISION RATIO
0.1F
174k
3V
CS
SCLK
SDI
VOUT
GND
V+
I CHANNEL INPUT
Q CHANNEL INPUT
I CHANNEL OUTPUT
Q CHANNEL OUTPUT
SPI CONTROL OF DAC
SETS THE LTC6602
CLOCK FREQUENCY
40MHz TO 100MHz
6
5
4
1
2
3
TRANSMITTER MUTE INPUT
ADC VCOM INPUT
LTC2630
8-BIT DAC
DAC VOUT
RANGE 0V TO 2.5V
(USING THE LTC2630
INTERNAL REFERENCE)
3V
0.1F
the highpass fCUTOFF “enhances” signal transitions and
intervals and increases filter output noise.
(s)
(a)
6602 F19a
0 10 20 30 40 50 60 70 80 90 100110120
TYPICAL TAG
SYMBOL
SEQUENCE
100kHZ
LOWPASS
LOWPASS ONLY FILTER
6602 F19b
(s)
(b)
0 10 20 30 40 50 60 70 80 90 100110120
100kHz LOWPASS + 30kHz HIGHPASS FILTER
6602 F19c
(s)
(c)
0 10 20 30 40 50 60 70 80 90 100110120
100kHz LOWPASS + 10kHz HIGHPASS FILTER
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