LTC6602IUF#PBF Linear Technology, LTC6602IUF#PBF Datasheet - Page 24

• Manufacturer Part Number: LTC6602IUF#PBF
• Description: IC FILTER BANDPASS/LOWPASS 24QFN
• Manufacturer: Linear Technology

Specifications of LTC6602IUF#PBF

• Filter Type: Bandpass
• Frequency - Cutoff Or Center: 300kHz
• Number Of Filters: 2
• Max-order: 5th
• Voltage - Supply: 2.7 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 24-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIONS INFORMATION
LTC6602
detecting the symbol sequence (in an RFID environment,
noise will be superimposed on the output signal). In
general, increasing the lowpass f
24
0 10 20 30 40 50 60 70 80 90 100110120
SPI CONTROL OF DAC
SETS THE LTC6602
CLOCK FREQUENCY
40MHz TO 100MHz
LOWPASS ONLY FILTER
INTERNAL REFERENCE)
1
2
3
(USING THE LTC2630
RANGE 0V TO 2.5V
CS
SCLK
SDI
8-BIT DAC
DAC V
(a)
(µs)
LTC2630
OUT
V
GND
OUT
V
+
TYPICAL TAG
SEQUENCE
SYMBOL
6
5
4
TRANSMITTER MUTE INPUT
100kHZ
LOWPASS
Figure 18. Filter Transient Response to a Tag Symbol Sequence
Figure 17. An Adaptable RFID Baseband Filter with SPI Control
3V
CUTOFF
0.1µF
6602 F19a
174k
and/or decreasing
68.1k
Q CHANNEL INPUT
I CHANNEL INPUT
0 10 20 30 40 50 60 70 80 90 100110120
100kHz LOWPASS + 30kHz HIGHPASS FILTER
0.1µF
24
23
20
21
22
14
25
7
8
4
3
+INA
–INA
+INB
–INB
R
V
MUTE
GAIN0(D0)
GAIN1
GND
GND
CS1
V+
1
BIAS
OCM
(µs)
(b)
5V
the highpass f
intervals and increases filter output noise.
IN
SCK
LTC6602
0.1µF
LPFO(SCLK)
HPFO(SDO)
V+
2
HPFI(SDI)
SDI
CLKCNTL
LPF1(CS)
A
–OUTB
+OUTB
–OUTA
+OUTA
16
CLKIO
3V
V+
SER
CS2
D
6602 F19b
18
19
12
13
15
17
11
10
0.1µF
5
9
6
CUTOFF
3V
I CHANNEL OUTPUT
Q CHANNEL OUTPUT
“enhances” signal transitions and
0 10 20 30 40 50 60 70 80 90 100110120
SPI CONTROL OF LTC6602
SETS THE FILTER GAIN AND THE
LOWPASS AND HIGHPASS
DIVISION RATIO
ADC VCOM INPUT
100kHz LOWPASS + 10kHz HIGHPASS FILTER
6602 F17
(µs)
(c)
6602 F19c
6602fc