參數(shù)資料
型號: TLC2574IDWRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: PLASTIC, SOIC-20
文件頁數(shù): 6/47頁
文件大小: 1129K
代理商: TLC2574IDWRG4
TLC3574, TLC3578, TLC2574, TLC2578
5V ANALOG, 3/5V DIGITAL, 14/12BIT, 200KSPS, 4/8CHANNEL
SERIAL ANALOGTODIGITAL CONVERTERS WITH ±10V INPUTS
SLAS262C OCTOBER 2000 REVISED MAY 2003
14
WWW.TI.COM
timing requirements over recommended operating free-air temperature range, AVDD = 5 V,
DVDD = 5 V, VREFP = 4 V, VREFM = 0 V, SCLK frequency = 25 MHz (unless otherwise noted) (continued)
CS trigger
PARAMETERS
MIN
TYP
MAX
UNIT
tsu(2)
Setup time, CS falling edge before SCLK rising edge, at 25-pF load
12
ns
td(4)
Delay time, delay time from the falling edge of 16th SCLK to CS rising edge, at 25 pF load
(see Note 12)
5
ns
tw(2)
Pulse width of CS high, at 25-pF load
1
tc(1)
td(5)
Delay time, delay from CS falling edge to MSB of SDO valid (reaches 90%
DVDD = 5 V
0
12
ns
td(5)
Delay time, delay from CS falling edge to MSB of SDO valid (reaches 90%
final level), at 10 pF load
DVDD = 2.7 V
0
30
ns
td(6)
Delay time, delay from CS rising edge to SDO 3-state, at 10-pF load
0
6
ns
td(7)
Delay time, delay from CS falling edge to INT rising edge, at 10-pF load
DVDD = 5 V
0
6
ns
td(7)
Delay time, delay from CS falling edge to INT rising edge, at 10-pF load
DVDD = 2.7 V
0
16
ns
Specified by design
NOTE 12: For normal short sampling, td(4) is the delay time from the falling edge of 16th SCLK to CS rising edge.
For normal long sampling, td(4) is the delay time from the falling edge of 48th SCLK to CS rising edge.
Hi-Z
ID15
OD1
OD0
ID1
116
OD15
Don’t Care
ID0
OR
tsu(2)
td(4)
tw(2)
td(7)
td(5)
Hi-Z
Don’t Care
VIH
VIL
CS
SCLK
SDI
SDO
EOC
INT
td(6)
Don’t Care
OD7
OD15
The dotted line means signal may or may not exist, depending on application. It must be ignored.
Normal sampling mode, CS initiates the conversion, FS must be tied to high. When CS is high, SDO is in Hi-Z, all inputs (FS, SCLK,
SDI) are inactive and are ignored.
Figure 2. Critical Timing for CS Trigger
相關PDF資料
PDF描述
TLC3574INE4 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20
TLC2574IPWRG4 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLC3574IPWRG4 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLC2574IPW 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLC2574IDWG4 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
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