参数资料
型号: TLC2574IDWRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装: PLASTIC, SOIC-20
文件页数: 7/47页
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
15
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)
FS trigger
PARAMETERS
MIN
TYP
MAX
UNIT
td(8)
Delay time, delay from CS falling edge to FS rising edge at 25-pF load
0.5
tc(1)
tsu(3)
Setup time, FS rising edge before SCLK falling edge at 25-pF load
0.25
×tc(1)
0.5
×tc(1)+ 5
ns
tw(3)
Pulse width of FS high, at 25-pF load
0.75
×tc(1)
tc(1)
1.25
×tc(1)
ns
td(9)
Delay time, delay from FS rising edge to MSB of SDO valid
DVDD = 5 V
26
ns
td(9)
Delay time, delay from FS rising edge to MSB of SDO valid
(reaches 90% final level), at 10-pF load
DVDD = 2.7 V
30
ns
td(10) Delay time, delay from FS rising edge to next FS rising edge, at 25-pF load
Required
sampling time +
conversion time
ns
td(11)
Delay time, delay from FS rising edge to INT rising edge, at
DVDD = 5 V
0
6
ns
td(11)
Delay time, delay from FS rising edge to INT rising edge, at
10-pF load
DVDD = 2.7 V
0
16
ns
Specified by design
ID15
OD1
OD0
ID1
Hi-Z
1
16
OD15
ID0
Don’t Care
ID15
OD15
OR
td(10)
tw(3)
td(8)
tsu(3)
td(9)
td(11)
Don’t Care
Hi-Z
VIH
VIL
VOH
CS
FS
SCLK
SDI
SDO
EOC
INT
The dotted line means signal may or may not exist, depending on application. It must be ignored.
Normal sampling mode, FS initiates the conversion, CS can be tied to low. When CS is high, SDO is in Hi-Z, all inputs (FS, SCLK,
SDI) are inactive and are ignored.
Figure 3. Critical Timing for FS Trigger
相关PDF资料
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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