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| 型号： | DDC118IRTCT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 8-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC48 |
| 封装： | GREEN, PLASTIC, QFN-48 |
| 文件页数： | 30/35页 |
| 文件大小： | 653K |
| 代理商： | DDC118IRTCT |
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DDC118
SBAS325B JUNE 2004 REVISED APRIL 2009
www.ti.com
4
ELECTRICAL CHARACTERISTICS (continued)
At TA = +25°C, AVDD = +5V, DVDD = 3V, VREF = +4.096V, Range 5 (250pC), and continuous mode operation, unless otherwise noted.
Low-Power Mode: TINT = 400s and CLK = 4MHz; High-Speed Mode: TINT = 320s and CLK = 4.8MHz.
High-Speed Mode
Low-Power Mode
PARAMETER
UNITS
MAX
TYP
MIN
MAX
TYP
MIN
TEST CONDITIONS
DIGITAL INPUT/OUTPUT
Logic Levels
VIH
0.8DVDD
DVDD + 0.1
V
VIL
0.1
0.2DVDD
V
VOH
IOH = 500A
DVDD 0.4
V
VOL
IOL = 500A
0.4
V
Input Current (IIN)
0 < VIN < DVDD
±10
A
Data Format(12)
Straight Binary
POWER-SUPPLY REQUIREMENTS
Analog Power-Supply Voltage (AVDD)
4.75
5.25
V
Digital Power-Supply Voltage (DVDD)
2.7
5.25
V
Supply Current
Total Analog Current
21
28
mA
Total Digital Current
DVDD = +3V
1
1.34
mA
Total Power Dissipation
DVDD = +3V
108
150
144
200
mW
Total Power Dissipation per Channel
DVDD = +3V
13.5
18.75
18
25
mW
(1)
indicates that specification is the same as Low-Power Mode.
(2) Exceeding maximum input current specification may damage device.
(3) Input is less than 1% of full scale.
(4) CSENSOR is the capacitance seen at the DDC118 inputs from wiring, photodiode, etc.
(5) FSR is Full-Scale Range.
(6) A best-fit line is used in measuring nonlinearity.
(7) Matching between side A and side B of the same input.
(8) Ensured by design, not production tested.
(9) Voltage produced by the DDC118 at its input which is applied to the sensor.
(10)Range drift does not include external reference drift.
(11)Input reference current decreases with increasing TINT (see the Voltage Reference section, page 11).
(12)Data format is Straight Binary with a small offset. The number of bits in the output word is controlled by the FORMAT pin (see text).
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