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ADS1293CISQE Arkusz danych(PDF) 8 Page - Texas Instruments

Numer części ADS1293CISQE
Szczegółowy opis  Low-Power, 3-Channel, 24-Bit Analog Front-End for Biopotential Measurements
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ADS1293
SNAS602C – FEBRUARY 2013 – REVISED DECEMBER 2014
www.ti.com
Electrical Characteristics
(1) (continued)
Unless otherwise noted, all limits are specified at TA = 25°C, 2.7 V ≤ VDD ≤ 5.5 V, 1.65 V ≤ VDDIO ≤ MIN(3.6 V, VDD), VREF
= 2.4 V, fOSC = 409.6 kHz, 1-µF low-ESR capacitor between CVREF and GND, 0.1-µF capacitor between RLDREF and GND.
PARAMETER
TEST CONDITIONS
MIN(2)
TYP(3)
MAX(2)
UNIT
ANALOG PACE CHANNEL
Gain
3.5
V/V
BW
–3dB Bandwidth
50
kHz
Output Reference
RLDREF
V
VOS
Input-Referred Offset Voltage
±1.3
mV
2.7 V
≤ VDD < 3.3 V
–330
330
mV
TMIN ≤ TA ≤ TMAX
DIVR
Differential Input Voltage Range
3.3 V
≤ VDD
–400
400
mV
TMIN ≤ TA ≤ TMAX
Common-Mode Voltage Range for full
CMVR
TMIN ≤ TA ≤ TMAX
0.95
VDD – 1.1
V
DIVR
CMRR
Common-Mode Rejection Ratio
0.5 V
≤ VCM ≤ VDD-1.5 V
85
dB
PSRR
Power Supply Rejection Ratio
3 V
≤ VDD ≤ 5 V, VCM=RLDREF
80
dB
SR
Slew Rate
35
mV/µs
Overload Recovery
100
µs
Ve-APACE
Input-Referred Noise for Analog Pace
VCM = RLDREF, 0.1 kHz - 20 kHz
105
µVPP
IVDD
Current Consumption
29
µA
CLOCK
fOSC
Internal Clock Frequency
fCRYSTAL = 4.096 MHz
409.6
kHz
Internal Clock Duty Cycle
50%
TSTART
Internal Clock Start-up Time
fCRYSTAL = 4.096 MHz
15
ms
IVDD
Internal Clock Power Consumption
83
µA
fEXT
External Clock Frequency(5)
TMIN ≤ TA ≤ TMAX
370
409.6
450
kHz
External Clock Duty Cycle(5)
TMIN ≤ TA ≤ TMAX
40%
50%
60%
DIGITAL INPUT / OUTPUT CHARACTERISTICS
0.8 ×
VIH
Logical “1” Input Voltage
TMIN ≤ TA ≤ TMAX
V
VDDIO
0.2 ×
VIL
Logical “0” Input Voltage
TMIN ≤ TA ≤ TMAX
V
VDDIO
ISOURCE = 400 µA, Digital output high-drive mode
VDDIO –
TMIN ≤ TA ≤ TMAX
0.075
VOH
Logical “1” Output Voltage
V
ISOURCE = 400 µA, Digital output low-drive mode
VDDIO –
TMIN ≤ TA ≤ TMAX
0.15
ISINK = 400 µA, Digital output high-drive mode
VSSIO +
V
TMIN ≤ TA ≤ TMAX
0.075
VOL
Logical “0” Output Voltage
ISINK = 400 µA, Digital output low-drive mode
VSSIO +
V
TMIN ≤ TA ≤ TMAX
0.15
SYNCB and RESETB pins, with 1-M
Ω internal
µA
±1
pullup resistor
IIOHL
Digital IO Leakage Current
Other digital I/O pins
nA
–500
500
TMIN ≤ TA ≤ TMAX
(5)
Specified by design; not production tested.
8
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