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TDC1011PW 데이터시트(PDF) 6 Page - Texas Instruments

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부품명 TDC1011PW
상세설명  TDC1011 Single Channel Ultrasonic Sensing Analog Front End (AFE) for Level Sensing,Concentration Sensing Applications
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홈페이지  http://www.ti.com
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TDC1011
SNAS662 – JULY 2015
www.ti.com
Electrical Characteristics (continued)
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These
specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of
the product containing it. TA = 25°C, VDD = VIO = 3.7 V, VCOM = VCM = VDD / 2, CVCOM = 10 nF (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ZERO CROSS COMPARATOR
VOS(COMP)
Input offset voltage(2)
Referred to VCOM
±115
µV
Zero crossing
enCOMP
comparator input
1 MHz
5
nV/
√Hz
referred noise(2)
HYSTCOMP
Hysteresis (2)
Referred to VCOM
-10
mV
THRESHOLD DETECTOR
ECHO_QUAL_THLD = 0h, VCOM referred
–35
mV
VTHDET
Threshold level
ECHO_QUAL_THLD = 7h, VCOM referred
–1.5
V
TEMPERATURE SENSOR INTERFACE(3)
RREF = 1 kΩ, PT1000 range: –40 to 125°C
(4)
1
°C
Temperature
TERROR
measurement accuracy R
REF = 1 kΩ, PT1000 range: –15°C to 85°C
(4)
0.5
°C
Relative accuracy
RREF = 1 kΩ, RRTD1 = RRTD2 = 1.1 kΩ
0.02
°CRMS
TGE
Gain error
5.8
m°C/°C
POWER SUPPLY
Sleep (EN = CLKIN = TRIGGER = low)
0.61
µA
Continuous receive mode, LNA and PGA
2.8
3
mA
bypassed
IDD
VDD supply current
Continuous receive mode, LNA and PGA active
6.2
7.5
mA
Temp. measurement only (PT1000 mode)(5)
370
400
µA
Temp. measurement (PT500 mode)(6)
500
540
µA
VIO supply sleep
IIO
Sleep (EN = CLKIN = TRIGGER = low)
2
nA
current(2)
DIGITAL INPUT/OUTPUT CHARACTERISTICS
Input logic low
VIL
0.2 × VIO
V
threshold
Input logic high
VIH
0.8 × VIO
V
threshold
SDO pin, 100-
μA current
0.2
V
SDO pin, 1.85-mA current
0.4
V
START and STOP pins, 100-
μA current
0.5
V
Output logic low
VOL
threshold
START and STOP pins, 1.85-mA current
0.6
V
ERRB pin, 100-
μA current
0.2
V
ERRB pin, 1.85-mA current
0.4
V
SDO pin, 100-
μA current
VIO – 0.2
V
SDO pin, 1.85-mA current
VIO – 0.6
V
Output logic high
VOH
START and STOP pins, 100-
μA current
VIO – 0.5
V
threshold
START and STOP pins, 1.85-mA current
VIO – 0.6
V
ERRB pin, 0-µA current
VIO – 0.2
V
Maximum output
IOMAX
current for SDO,
1.85
mA
START and STOP
(2)
Specified by design.
(3)
With ideal external components. For more detail see Temp Sensor Measurement section.
(4)
PT1000 RTD approximate resistance: 800
Ω ≡ –52°C, 931 Ω ≡ –18°C, 1.10 kΩ ≡ 26°C, 1.33 kΩ ≡ 86°C and 1.48 kΩ ≡ 125°C.
(5)
Specified currents include 120
μA which flows through the RTD sensor in PT1000 mode (TEMP_RTD_SEL = 0).
(6)
Specified currents include 240
μA which flows through the RTD sensor in PT500 mode (TEMP_RTD_SEL = 1).
6
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