ADC084S021
SNAS279E –APRIL 2005–REVISED MARCH 2013
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(1)
ADC084S021 Converter Electrical Characteristics
The following specifications apply for VA = +2.7V to 5.25V, GND = 0V, fSCLK = 0.8 MHz to 3.2 MHz, fSAMPLE = 50 ksps to 200
ksps, CL = 50 pF, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25°C.
(2)
Symbol
Parameter
Conditions
Typical
Limits
Units
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes
8
Bits
INL
Integral Non-Linearity
Differential Non-Linearity
Offset Error
±0.04
±0.04
+0.52
±0.01
+0.51
±0.2
±0.2
±0.7
±0.3
±0.7
LSB (max)
LSB (max)
LSB (max)
LSB (max)
LSB (max)
DNL
VOFF
OEM
FSE
Channel to Channel Offset Error Match
Full-Scale Error
Channel to Channel Full-Scale Error
Match
FSEM
+0.01
±0.3
LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
VA = +2.7 to 5.25V
fIN = 39.9 kHz, −0.02 dBFS
SINAD
SNR
Signal-to-Noise Plus Distortion Ratio
Signal-to-Noise Ratio
49.6
49.6
−76
68
49.1
49.2
−62
63
dB (min)
dB (min)
dB (max)
dB (min)
Bits (min)
dB
VA = +2.7 to 5.25V
fIN = 39.9 kHz, −0.02 dBFS
VA = +2.7 to 5.25V
fIN = 39.9 kHz, −0.02 dBFS
THD
Total Harmonic Distortion
VA = +2.7 to 5.25V
fIN = 39.9 kHz, −0.02 dBFS
SFDR
ENOB
Spurious-Free Dynamic Range
Effective Number of Bits
VA = +2.7 to 5.25V
fIN = 39.9 kHz, −0.02 dBFS
7.9
7.9
VA = +5.25V
fIN = 39.9 kHz
Channel-to-Channel Crosstalk
−73
−78
−73
Intermodulation Distortion, Second
Order Terms
VA = +5.25V
fa = 40.161 kHz, fb = 41.015 kHz
dB
IMD
Intermodulation Distortion, Third Order
Terms
VA = +5.25V
fa = 40.161 kHz, fb = 41.015 kHz
dB
VA = +5V
VA = +3V
11
8
MHz
MHz
FPBW
-3 dB Full Power Bandwidth
ANALOG INPUT CHARACTERISTICS
VIN
Input Range
0 to VA
V
µA (max)
pF
IDCL
DC Leakage Current
±1
Track Mode
Hold Mode
33
3
CINA
Input Capacitance
pF
DIGITAL INPUT CHARACTERISTICS
VA = +5.25V
VA = +3.6V
2.4
2.1
0.8
±10
4
V (min)
V (min)
VIH
Input High Voltage
VIL
Input Low Voltage
Input Current
V (max)
µA (max)
pF (max)
IIN
VIN = 0V or VA
CIND
Digital Input Capacitance
2
DIGITAL OUTPUT CHARACTERISTICS
ISOURCE = 200 µA
ISOURCE = 1 mA
ISINK = 200 µA
ISINK = 1 mA
V
A − 0.03
V
A − 0.5
V (min)
V
VOH
Output High Voltage
Output Low Voltage
V
A − 0.1
0.03
0.1
0.4
V (max)
V
VOL
IOZH, IOZL TRI-STATE® Leakage Current
±1
4
µA (max)
pF (max)
COUT
TRI-STATE® Output Capacitance
Output Coding
2
Straight (Natural) Binary
(1) Min/max specification limits are specified by design, test, or statistical analysis.
(2) Tested limits are specified to TI's AOQL (Average Outgoing Quality Level).
4
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