Datasheet
ADC101C021, ADC101C027
SNAS446D –FEBRUARY 2008–REVISED FEBRUARY 2013
www.ti.com
Electrical Characteristics
The following specifications apply for V
A
= +2.7V to +5.5V, GND = 0V, f
SCL
up to 3.4MHz, f
IN
= 1kHz for f
SCL
up to 400kHz, f
IN
= 10kHz for f
SCL
= 3.4MHz unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
: all other limits T
A
= 25°C
unless otherwise noted.
Typical Limits
Symbol Parameter Conditions Units (Limits)
(1) (1)
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes 10 Bits
V
A
= +2.7V to +3.6V ±0.1 ±0.5 LSB (max)
Integral Non-Linearity (End Point
INL +0.21 +0.7 LSB (max)
Method)
V
A
= +2.7V to +5.5V. f
SCL
up to 400 kHz
(2)
−0.16 −0.7 LSB (min)
V
A
= +2.7V to +3.6V ±0.1 ±0.5 LSB (max)
DNL Differential Non-Linearity +0.25 +0.7 LSB (max)
V
A
= +2.7V to +5.5V. f
SCL
up to 400 kHz
(2)
−0.16 −0.7 LSB (min)
V
A
= +2.7V to +3.6V
+0.25 ±0.8 LSB (max)
f
SCL
up to 3.4 MHz
V
OFF
Offset Error
V
A
= +2.7V to +5.5V. f
SCL
up to 400kHz
(2)
+0.27 ±0.8 LSB (max)
GE Gain Error -0.13 ±1 LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
V
A
= +2.7V to +3.6V 9.97 9.87 Bits (min)
ENOB Effective Number of Bits
V
A
= +3.6V to +5.5V 9.94 Bits
V
A
= +2.7V to +3.6V 61.8 61.2 dB (min)
SNR Signal-to-Noise Ratio
V
A
= +3.6V to +5.5V 61.6 dB
V
A
= +2.7V to +3.6V −88.9 −74 dB (max)
THD Total Harmonic Distortion
V
A
= +3.6V to +5.5V −85.7 dB
V
A
= +2.7V to +3.6V 61.8 61.2 dB (min)
SINAD Signal-to-Noise Plus Distortion Ratio
V
A
= +3.6V to +5.5V 61.6 dB
V
A
= +2.7V to +3.6V 84 76 dB (min)
SFDR Spurious-Free Dynamic Range
V
A
= +3.6V to +5.5V 84.3 dB
Intermodulation Distortion, Second
f
a
= 1.035 kHz, f
b
= 1.135 kHz −83.9 dB
Order Terms (IMD
2
)
IMD
Intermodulation Distortion, Third
f
a
= 1.035 kHz, f
b
= 1.135 kHz −82.4 dB
Order Terms (IMD
3
)
V
A
= +3.0V 8 MHz
FPBW Full Power Bandwidth (−3dB)
V
A
= +5.0V 11 MHz
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range 0 to V
A
V
I
DCL
DC Leakage Current
(3)
±1 µA (max)
Track Mode 30 pF
C
INA
Input Capacitance
Hold Mode 3 pF
(1) Typical figures are at T
J
= 25°C, and represent most likely parametric norms. Test limits are guaranteed to National's AOQL (Average
Outgoing Quality Level).
(2) The ADC will meet Minimum/Maximum specifications for f
SCL
up to 3.4MHz when operating in the Quiet Interface Mode (Section 1.11).
(3) This parameter is guaranteed by design and/or characterization and is not tested in production.
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