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參數資料
| 型號： | TLC4545IDR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數： | 23/26頁 |
| 文件大小： | 652K |
| 代理商： | TLC4545IDR |
TLC4541, TLC4545
SLAS293 DECEMBER 2001
6
www.ti.com
timing requirements, VDD = 5 V, VREF = 4.096 V, SCLK frequency = 15 MHz (unless otherwise specified)
MIN
TYP
MAX
UNIT
tcyc(SCLK) SCLK cycle time, VDD = 4.5 V to 5.5 V (see Note 3)
66
10000
ns
tw1
Pulse width, SCLK low
27
5000
ns
tw2
Pulse width, SCLK high
27
5000
ns
th1
Hold time, CS high after SCLK falling edge
3
ns
tsu1
Setup time, CS falling edge before the first SCLK falling edge
15
ns
th2
Hold time, CS low after 16th SCLK falling edge
5
ns
tw3
Pulse width, CS high
0.5
SCLKs
td1
Delay time, CS falling edge to SDO MSB valid, VDD = VREF = 4.5 V, 20 pF
12
17
ns
td2
Delay time, SCLK rising edge to next SDO data bit valid, VDD = VREF = 4.5 V, 20 pF
15
ns
td3
Delay time, 17th SCLK rising edge to SDO 3-stated, VDD = VREF = 4.5 V, 20 pF (see Note 4)
20
ns
tsu3
Setup time, CS falling edge before FS rising edge (TLC4541 only)
0.5
1
SCLKs
tw4
Pulse width, FS high (TLC4541 only)
0.5
1
SCLKs
tsu4
Setup time, FS rising edge before SCLK falling edge (TLC4541 only)
12.5
ns
th4
Hold time, FS high after SCLK falling edge (TLC4541 only)
5
ns
tsu5
Setup time, FS falling edge before 1st SCLK falling edge (TLC4541 only)
12
ns
td4
Delay time, FS rising edge to SDO MSB valid, (VDD = VREF = 4.5 V, 20 pF TLC4541 only)
15
ns
th6
Hold time, CS low after 1st SCLK falling edge
5
ns
tsu6
Setup time, CS rising edge before 9th (or the last) SCLK falling edge
5
ns
th7
Hold time, FS low after 1st SCLK falling edge (TLC4541 only)
5
ns
tsu7
Setup time, FS rising edge before 9th (or the last) SCLK falling edge
5
ns
tcyc(reset)
Active CS/FS cycle time, SCLK falling edges required to initialize ADC
1
8
SCLKs
tconv
Conversion time (22 conversion clocks based on 7.5-MHz to 12-MHz OSC)
1.83
2.94
s
ts
Sample time, 20 SCLKs, SCLK up to 15 MHz
1.33
200
s
NOTES:
3. Timing specifications given for 40/60 to 60/40 duty cycle
4. SDO goes into the high impedance state after detection of the 17th rising SCLK edge or a rising CS edge if a 17th SCLK is not
presented.
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