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参数资料
| 型号： | TLV990-28PFBG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封装： | GREEN, PLASTIC, TQFP-48 |
| 文件页数： | 6/23页 |
| 文件大小： | 408K |
| 代理商： | TLV990-28PFBG4 |
TLV99028
3V, 10BIT, 28MSPS AREA CCD ANALOG FRONT END
SLAS300A AUGUST 2000 REVISED MARCH 2004
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
REGISTER DEFINITION
hot/cold pixel limit register format
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
HFIT
hot/cold pixel limit register description
Bit
Name
Description
D9 D1
X
Reserved
D0
HFIT
Set hot/cold pixel filter
0 Apply Vb
± .8 hot/cold pixel filtering
1 No hot/cold pixel filtering (default)
Default hot/cold pixel limit register value = 0000000001
control register2 format
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
SOF
NOS
ASOF
X
WT3
WT2
WT1
WT0
control register 2 description
BIT
NAME
DESCRIPTION
D9
SOF
0 – Normal mode (default)
1 – Start of frame (only used when exposure time is changed)
When this bit is set to 1, next positive ADCCLK edge indicates that next pixel line is the beginning of a new frame.
The optical black correction will be performed with one line averaging only (digital filtering weight = 1) and without
hot/cold pixel limits.
D8
NOS
Internal test bit, add 255 to optical black pixels when bit set to 1
Default = 0
D7
ASOF
Enable auto SOF
0 = No auto SOF (default)
1 = Automatically enable SOF at major gain changes
D6D4
X
Reserved. Set bits to 0.
D3D0
WT2WT0
These three bits set the weight for digital filtering.
WT3
WT2
WT1
WT0
Weight (effect of the averaged result of each optical black pixel line on
0
overall optical black averaging
000
01
000
11/2
001
01/4
001
11/8
0
1
0
1/16
0
1
0
1
1/32
0
1
0
1/64
0
1
1/128 (default)
1
0
1/256
Default control register2 value = X000000111
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| TLV990-40 | 制造商:Texas Instruments 功能描述:CCD Analogue Front End 40MSPS TLV990-40 |
| TLV99040PFB | 制造商:Texas Instruments 功能描述: |
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| TLV990-40PFBG4 | 功能描述:视频模拟/数字化转换器集成电路 3-V 10-Bit 40 MSPS Area CCD RoHS:否 制造商:Texas Instruments 输入信号类型:Differential 转换器数量:1 ADC 输入端数量:4 转换速率:3 Gbps 分辨率:8 bit 结构: 输入电压:3.3 V 接口类型:SPI 信噪比: 电压参考: 电源电压-最大:3.45 V 电源电压-最小:3.15 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TCSP-48 封装:Reel |
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