参数资料
型号: TSC2046IRGVT
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC16
封装: 4 X 4 MM, 1MM HEIGHT, GREEN, PLASTIC, QFN-16
文件页数: 23/33页
文件大小: 774K
代理商: TSC2046IRGVT
TSC2046
SBAS265G OCTOBER 2002 REVISED JANUARY 2008
www.ti.com
3
ELECTRICAL CHARACTERISTICS: VS = +2.7V to +5.5V
At TA = 40°C to +85°C, +VCC = +2.7V, VREF = 2.5V internal voltage, fSAMPLE = 125kHz, fCLK = 16 fSAMPLE = 2MHz, 12-bit mode, digital
inputs = GND or IOVDD, and +VCC must be ≥ IOVDD, unless otherwise noted.
TSC2046
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-Scale Input Span
Positive InputNegative Input
0
VREF
V
Absolute Input Range
Positive Input
0.2
+VCC + 0.2
V
Negative Input
0.2
+0.2
V
Capacitance
25
pF
Leakage Current
0.1
A
SYSTEM PERFORMANCE
Resolution
12
Bits
No Missing Codes
11
Bits
Integral Linearity Error
±2
LSB(1)
Offset Error
±6
LSB
Gain Error
External VREF
±4
LSB
Noise
Including Internal VREF
70
Vrms
Power-Supply Rejection
70
dB
SAMPLING DYNAMICS
Conversion Time
12
CLK Cycles
Acquisition Time
3
CLK Cycles
Throughput Rate
125
kHz
Multiplexer Settling Time
500
ns
Aperture Delay
30
ns
Aperture Jitter
100
ps
Channel-to-Channel Isolation
VIN = 2.5VPP at 50kHz
100
dB
SWITCH DRIVERS
On-Resistance
Y+, X+
5
Y, X
6
Drive Current(2)
Duration 100ms
50
mA
REFERENCE OUTPUT
Internal Reference Voltage
2.45
2.50
2.55
V
Internal Reference Drift
15
ppm/
°C
Quiescent Current
500
A
REFERENCE INPUT
Range
1.0
+VCC
V
Input Impedance
SER/DFR = 0, PD1 = 0
1
G
Internal Reference Off
Internal Reference On
250
BATTERY MONITOR
Input Voltage Range
0.5
6.0
V
Input Impedance
Sampling Battery
10
k
Battery Monitor Off
1
G
Accuracy
VBAT = 0.5V to 5.5V, External VREF = 2.5V
2
+2
%
VBAT = 0.5V to 5.5V, Internal Reference
3
+3
%
TEMPERATURE MEASUREMENT
Temperature Range
40
+85
°C
Resolution
Differential Method(3)
1.6
°C
TEMP0(4)
0.3
°C
Accuracy
Differential Method(3)
±2
°C
TEMP0(4)
±3
°C
(1) LSB means Least Significant Bit. With VREF = +2.5V, one LSB is 610V.
(2) Assured by design, but not tested. Exceeding 50mA source current may result in device degradation.
(3) Difference between TEMP0 and TEMP1 measurement, no calibration necessary.
(4) Temperature drift is 2.1mV/°C.
(5) TSC2046 operates down to 2.2V.
(6) IOVDD must be ≤ (+VCC).
(7) Combined supply current from +VCC and IOVDD. Typical values obtained from conversions on AUX input with PD0 = 0.
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