XE3005 查看數據表（PDF） - Semtech Corporation
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XE3005 Datasheet PDF : 37 Pages
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XE3005/XE3006
5.3 ELECTRICAL CHARACTERISTICS
The operating conditions in this section are: VDD = 3.0 V, T = 25°C.
5.3.1 Digital Inputs and Outputs, FSYNC = 20 kHz, output not loaded
Parameter
VOH High-level output voltage, DOUT
Test
Conditions
Min
IO = -360uA
2.4
Typ
Max Unit
VDD+0.5 V
VOL Low-level output voltage, DOUT
IO = 2mA VSSD-0.5
0.4
V
IIH High-level input current, any digital input
VIH = 3.3 V
10
uA
IIL Low-level input current, any digital input
VIL = 0.6 V
10
uA
Ci Input capacitance
10
pF
Co Output capacitance
10
pF
5.3.2 ADC Dynamic Performance, FSYNC = 20 kHz
Parameter
SNR Signal-to-noise ratio
THD Total harmonic distortion
Test Conditions
Min
Pre-amp gain = 5x
Vin=250mV (full scale)
72
1⁄4 full scale
Flo Low cut-off frequency (-3 dB), See Note 1 FSYNC = 20 kHz
60
Fhi High cut-off frequency (-3 dB), See Note 2 FSYNC = 20 kHz
GD Group delay
Note 1) Flo is proportional to FSYNC
Note 2) Fhi equals FSYNC/2
FSYNC = 20 kHz
Typ
Max Unit
78
dB
0.5
%
70
80
Hz
10
kHz
150 us
5.3.3 ADC Channel Characteristics, FSYNC = 20 kHz
Parameter
Test Conditions
Min
Vip Peak input voltage (single ended)
Pre-amp gain = 5x
Pre-amp gain = 20x
A-weighted, 100 Hz-10 kHz
Vneq Equivalent input noise
pre-amp gain = 5x
A-weighted, 100 Hz-10 kHz
pre-amp gain = 20x
Dynamic range
Pre-amp gain = 5x
Vin=250mV (full scale)
72
PSRR Power supply rejection ratio, input referred
Up to 1 kHz
Cin Input capacitor
Preamp-gain = 5x
Preamp gain = 20x
Rin Input resistance VIN – VSSA
1
Eg gain error
offset error
VDD 1.8-3.3V
VDD 1.8-3.3V
input noise
VDD 1.8-3.3V
INL Integral non linearity
VDD 1.8-3.3V
DNL Differential non linearity
VDD 1.8-3.3V
© Semtech 2005
20
Typ
78
60
50
200
+/- 0.1
-60
6.7
+/- 5
+/- 0.1
Max Unit
270
mV
65
20
µV rms
5
dB
dB
pF
MOhm
[%]
LSB
LSB
LSB
LSB
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