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參數(shù)資料
| 型號(hào)： | WM8150CDS |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| 中文描述： | 單通道12位獨(dú)聯(lián)體/防治荒漠化公約與4位寬輸出模擬前端 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大?。?/td> | 271K |
| 代理商： | WM8150CDS |
Production Data
WM8150
w
PD Rev 3.0 November 2002
15
PROGRAMMABLE VSMP DETECT CIRCUIT
The VSMP input is used to determine the sampling point and frequency of the WM8150. Under
normal operation a pulse of 1 MCLK period should be applied to VSMP at the desired sampling
frequency (as shown in the Operating Mode Timing Diagrams) and the input sample will be taken on
the first rising MCLK edge after VSMP has gone low. However, in certain applications such a signal
may not be readily available. The programmable VSMP detect circuit in the WM8150 allows the
sampling point to be derived from any signal of the correct frequency, such as a CCD shift register
clock, when applied to the VSMP pin.
When enabled, by setting the VSMPDET control bit, the circuit detects either a rising or falling edge
(determined by POSNNEG control bit) on the VSMP input pin and generates an internal VSMP pulse.
This pulse can optionally be delayed by a number of MCLK periods, specified by the VDEL[2:0] bits.
Figure 14 shows the internal VSMP pulses that can be generated by this circuit for a typical clock
input signal. The internal VSMP pulse is then applied to the timing control block in place of the
normal VSMP pulse provided from the input pin. The sampling point then occurs on the first rising
MCLK edge after this internal VSMP pulse, as shown in the Operating Mode Timing Diagrams.
MCLK
VSMP
(VDEL = 000) INTVSMP
POSNNEG = 1
(VDEL = 001) INTVSMP
(VDEL = 010) INTVSMP
(VDEL = 011) INTVSMP
(VDEL = 100) INTVSMP
(VDEL = 101) INTVSMP
(VDEL = 110) INTVSMP
(VDEL = 111) INTVSMP
POSNNEG = 0
(VDEL = 000) INTVSMP
(VDEL = 001) INTVSMP
(VDEL = 010) INTVSMP
(VDEL = 011) INTVSMP
(VDEL = 100) INTVSMP
(VDEL = 101) INTVSMP
(VDEL = 110) INTVSMP
(VDEL = 111) INTVSMP
INPUT
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Figure 14 Internal VSMP Pulses Generated by Programmable VSMP Detect Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM8150CDSR | SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| WM8170 | 5.0 VOLT BI-DIRECTIONAL TRANSIENT VOLTAGE SUPPRESSOR |
| WM8181 | 12-bit 2MSPS Serial Output CIS/CCD Digitiser |
| WM8190 | TVS UNIDIRECT 6V 400W SMA |
| WM8191 | TVS BI-DIR 6.0V 400W SMA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8150CDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Single Channel 12-bit CIS/CCD AFE with 4-bit Wide Output |
| WM8150CDSR | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| WM8150SCDS | 功能描述:視頻 IC 12-Bit 6MSPS Single-Channel AFE RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| WM8150SCDS/R | 功能描述:視頻 IC 12-Bit 6MSPS Single-Channel AFE RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| WM8150SCDS/RV | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 6MSPS Single-Channel AFE RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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