ADAS1000(RevA) 查看數據表（PDF） - Analog Devices
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ADAS1000 Datasheet PDF : 80 Pages
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ADAS1000/ADAS1000-1/ADAS1000-2
Data Sheet
SPECIFICATIONS
AVDD = 3.3 V ± 5%, IOVDD = 1.65 V to 3.6 V, AGND = DGND = 0 V, REFIN tied to REFOUT, externally supplied crystal/clock =
8.192 MHz. Decoupling for reference and supplies as noted in the Power Supply, Grounding, and Decoupling Strategy section. TA =
−40°C to +85°C, unless otherwise noted. Typical specifications are mean values at TA = 25°C.
For specified performance, internal ADCVDD and DVDD linear regulators have been used. They may be supplied from external
regulators. ADCVDD = 1.8 V ± 5%, DVDD = 1.8 V ± 5%.
Front-end gain settings: GAIN 0 = ×1.4, GAIN 1 = ×2.1, GAIN 2 = ×2.8, GAIN 3 = ×4.2.
Table 2.
Parameter
ECG CHANNEL
Electrode Input Range
Input Bias Current
Input Offset
Min
0.3
0.63
0.8
0.97
−40
−200
Input Offset Tempco1
Input Amplifier Input
Impedance2
CMRR2
105
Crosstalk1
Resolution2
Integral Nonlinearity Error
Differential Nonlinearity Error
Gain2
GAIN 0 (×1.4)
GAIN 1 (×2.1)
GAIN 2 (×2.8)
GAIN 3 (×4.2)
Typ
Max
1.3
1.3
1.3
1.3
±1
−7
−7
−15
−22
±2
1||10
110
80
19
18
16
30
5
4.9
9.81
39.24
3.27
6.54
26.15
2.45
4.9
19.62
1.63
3.27
13.08
2.3
1.97
1.8
1.63
+40
+200
Unit
V
V
V
V
nA
nA
mV
mV
mV
mV
μV/°C
GΩ||pF
dB
dB
Bits
Bits
Bits
ppm
ppm
µV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
μV/LSB
Test Conditions/Comments
These specifications apply to the following pins:
ECG1_LA, ECG2_LL, ECG3_RA, ECG4_V1, ECG5_V2,
CM_IN (CE mode), EXT_RESP_xx pins when used in
extend switch mode
Independent of supply
GAIN 0 (gain setting ×1.4)
GAIN 1 (gain setting ×2.1)
GAIN 2 (gain setting ×2.8)
GAIN 3 (gain setting ×4.2)
Relates to each electrode input; over operating range;
dc and ac lead-off are disabled
AGND to AVDD
Electrode/vector mode with VCM = VCM_REF
GAIN 3
GAIN 2
GAIN 1
GAIN 0
At 10 Hz
51 kΩ imbalance, 60 Hz with ±300 mV differential dc
offset; per AAMI/IEC standards; with driven leg loop
closed
Between channels
Electrode/vector mode, 2 kHz data rate, 24-bit data-word
Electrode/vector mode, 16 kHz data rate, 24-bit data-
word
Electrode/analog lead mode, 128 kHz data rate, 16-bit
data-word
GAIN 0; all data rates
GAIN 0
Referred to input. (2 × VREF)/Gain/(2N − 1). Applies
after factory calibration. User calibration adjusts this
number.
At 19-bit level in 2 kHz data rate
At 18-bit level in 16 kHz data rate
At 16-bit level in 128 kHz data rate
At 19-bit level in 2 kHz data rate
At 18-bit level in 16 kHz data rate
At 16-bit level in 128 kHz data rate
At 19-bit level in 2 kHz data rate
At 18-bit level in 16 kHz data rate
At 16-bit level in 128 kHz data rate
No factory calibration for this gain setting
At 19-bit level in 2 kHz data rate
At 18-bit level in 16 kHz data rate
At 16-bit level in 128 kHz data rate
Rev. A | Page 4 of 80
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