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參數(shù)資料
| 型號(hào)： | WM8199SCDS |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 20MSPS 16-bit CCD Digitiser |
| 中文描述： | 20MSPS 16位數(shù)字化儀防治荒漠化公約 |
| 文件頁數(shù)： | 16/30頁 |
| 文件大?。?/td> | 358K |
| 代理商： | WM8199SCDS |
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WM8199
Production Data
w
PD Rev 3.2 November 2003
16
PGA NODE: GAIN ADJUST
The signal is then multiplied by the PGA gain,
V
3
=
V
2
208/(283- PGA[7:0]) .............................................. Eqn. 5
ADC BLOCK: ANALOGUE-DIGITAL CONVERSION
The analogue signal is then converted to a 16-bit unsigned number, with input range configured by
PGAFS[1:0].
D
1
[15:0] = INT{ (
V
3
/V
FS
)
65535} + 32767 PGAFS[1:0] = 00 or 01 ...... Eqn. 6
D
1
[15:0] = INT{ (
V
3
/V
FS
)
65535}
PGAFS[1:0] = 11 ............... Eqn. 7
D
1
[15:0] = INT{ (
V
3
/V
FS
)
65535} + 65535 PGAFS[1:0] = 10 ............... Eqn. 8
where the ADC full-scale range, V
FS
= 3V
OUTPUT INVERT BLOCK: POLARITY ADJUST
The polarity of the digital output may be inverted by control bit INVOP.
D
2
[15:0] =
D
1
[15:0]
(INVOP = 0) ...................... Eqn. 9
D
2
[15:0] = 65535 –
D
1
[15:0]
(INVOP = 1) ...................... Eqn. 10
OUTPUT FORMATS
The digital data output from the ADC is available to the user in 8 or 4-bit wide multiplexed formats by
setting control bit MUXOP[1:0]. Latency of valid output data with respect to VSMP is programmable
by writing to control bits DEL[1:0]. The latency for each mode is shown in the Operating Mode Timing
Diagrams section.
Figure 14 shows the output data formats for Modes 1 – 2 and 4 – 6. Figure 15 shows the output data
formats for Mode 3. Table 1 summarises the output data obtained for each format.
MCLK
4+4+4+4-BIT
OUTPUT
A
B
A
B
C
D
8+8-BIT
OUTPUT
MCLK
4+4+4+4-BIT
OUTPUT
A
B
8+8-BIT
OUTPUT
A B
C D
A B
Figure 14 Output Data Formats
(Modes 1
2, 4
6)
Figure 15 Output Data Formats
(Mode 3)
OUTPUT
FORMAT
8+8-bit
multiplexed
4+4+4+4-bit
(nibble)
MUXOP[1:0]
OUTPUT
PINS
OP[7:0]
OUTPUT
00, 01, 10
A = d15, d14, d13, d12, d11, d10, d9, d8
B = d7, d6, d5, d4, d3, d2, d1,d0
A = d15, d14, d13, d12
B = d11, d10, d9, d8
C = d7, d6, d5, d4
D = d3, d2, d1, d0
11
OP[7:4]
Table 1 Details of Output Data Shown in Figure 14 and Figure 15.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8199SCDS/RV | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 16-Bit 20MSPS 3-Channel AFE RoHS:否 制造商:Texas Instruments 輸入信號(hào)類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| WM8199SCDS/V | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 16-Bit 20MSPS 3-Channel AFE RoHS:否 制造商:Texas Instruments 輸入信號(hào)類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| WM8200 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS ADC with PGA |
| WM8200-10 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS ADC with PGA |
| WM8200-10IFL | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS ADC with PGA |
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