參數(shù)資料
型號(hào)： HCTL-2022
元件分類： 通用總線功能
英文描述： Quadrature Decoder/Counter Interface ICs
中文描述： 正交解碼器/計(jì)數(shù)器接口芯片
文件頁(yè)數(shù)： 13/20頁(yè)
文件大小： 302K
代理商： HCTL-2022
13
Quadrature Decoder
The quadrature decoder decodes
the incoming filtered signals
into count information. This
circuitry multiplies the
resolution of the input signals
by a factor of one, two or four
(1X, 2X, 4X decoding)
depending on the resolution
mode. When using an encoder
for motion sensing, the user
benefits from the selectable
resolution by being able to
provide better system control.
The quadrature decoder samples
the outputs of the CHA and
CHB filters. Based on the past
binary state of the two signals
and the present state, it outputs
a count signal and a direction
signal to the integral position
counter.
Figure 13 shows the quadrature
states of Channel A and
Channel B signals. The 4x
decoder mode will output a
count signal for every state
transition (count up and count
down). Figure 14 shows the
valid state transitions for 2x
and 1x decoder modes. The 2x/
1x decoder will output a count
signal at respective state
transition, depending on the
counting direction. Channel A
leading channel B results in
counting up. Channel B leading
channel A results in counting
down. Illegal state transitions,
caused by faulty encoders or
noise severe enough to pass
through the filter, will produce
an erroneous count.
Figure 12. Signal Propagation through Digital Noise Filter
CLK
CHA
CHB
CHA
filtered
CHB
filtered
CHI
CHI
filtered
t
E
t
E
t
ES
t
ES
t
ES
t
ES
t
E
t
E
3 t
CLK
Noise Spike
1
2
3
4
clk
state
chA
chB
Tes
Te
Telp
1
2
3
4
Valid State
Transitions
count up
count
down
相關(guān)PDF資料
PDF描述
HCTL-2032 Quadrature Decoder/Counter Interface ICs
HCTL-2032-SC Quadrature Decoder/Counter Interface ICs
HCTS00D Radiation Hardened Quad 2-Input NAND Gate
HCTS00HMSR Radiation Hardened Quad 2-Input NAND Gate
HCTS00DMSR Radiation Hardened Quad 2-Input NAND Gate
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HCTL-2032 功能描述:接口 - 專用 Decoder/Counter RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
HCTL-2032-SC 功能描述:接口 - 專用 Decoder/Counter RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
HCTL-2032-SCT 制造商:Avago Technologies 功能描述:QUADRATURE DECODER/ COUNTER INTRFC IC 32PIN - Tape and Reel
HCT-L-R5A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic
HCT-L-R5B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic
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