参数资料
型号: TLV2556IDWR
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装: GREEN, PLASTIC, SOIC-20
文件页数: 15/37页
文件大小: 729K
代理商: TLV2556IDWR
TLV2556
SLAS355A – DECEMBER 2001 – REVISED SEPTEMBER 2002
22
www.ti.com
PARAMETER MEASUREMENT INFORMATION
timing diagrams
1
2
3
5
4
6
10
11
12
1
MSB–1 MSB–2 MSB–3 MSB–4 MSB–5
MSB–8 MSB–9 LSB+1
LSB
Hi–Z State
2
3
D6
D5
D4
D3
D2
D1
D0
D6
D5
D7
8
7
9
MSB–6 MSB–7
D7
Previous Conversion Data
MSB
MSB–2
MSB–1
Shift in New Multiplexer Address,
Simultaneously Shift Out Previous Conversion Result
Access
Cycle
Sample Cycle
Channel
Address
A/D Conversion Interval
Output Data
Format
tconv
CS
I/O
CLOCK
DATA
OUT
DATA
IN
EOC
Initialize
INT
NOTE A: To minimize errors caused by noise at CS, the internal circuitry waits for a setup time after the CS falling edge before responding to
control input signals. Therefore, no attempt should be made to clock in an address until the minimum CS setup time has elapsed.
Figure 46. Timing for 12-Clock Transfer Using CS With DATA OUT Set for MSB First
MSB
1
2
3
5
4
610
11
12
1
MSB–1 MSB–2 MSB–3 MSB–4 MSB–5
MSB–8 MSB–9 LSB+1
LSB
2
3
D6
D5
8
7
9
MSB–6 MSB–7
D7
Low Level
MSB
D6
D5
D4
D3
D2
D1
D0
D7
MSB–2
MSB–1
Shift in New Multiplexer Address,
Simultaneously Shift Out Previous Conversion Result
Access
Cycle
Sample Cycle
Channel
Address
A/D Conversion Interval
Output Data
Format
tconv
Previous Conversion Data
CS
I/O
CLOCK
DATA
OUT
DATA IN
EOC
INT
Initialize
NOTE A: To minimize errors caused by noise at CS, the internal circuitry waits for a setup time after the CS falling edge before responding to
control input signals. Therefore, no attempt should be made to clock in an address until the minimum CS setup time has elapsed.
Figure 47. Timing for 12-Clock Transfer Not Using CS With DATA OUT Set for MSB First
相关PDF资料
PDF描述
TLV2556IPWR 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLV2556IDW 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLV2556IPWG4 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLV2556MPWREP 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
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