Datasheet

ADC121S101
SNAS304F –JANUARY 2006–REVISED MAY 2013 www.ti.com
ADC121S101 CONVERTER ELECTRICAL CHARACTERISTICS
(1)(2)
The following specifications apply for V
A
= +2.7V to 5.25V, GND = 0V, f
SCLK
= 10 MHz to 20 MHz, C
L
= 15 pF, f
SAMPLE
= 500
ksps to 1 Msps, unless otherwise noted. Boldface limits apply for T
A
= -40°C to +125°C: all other limits T
A
= 25°C unless
otherwise noted.
Symbol Parameter Conditions Typical Limits
(2)
Units
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing
V
A
= +2.7v to +3.6V −40°C ≤ T
A
≤ 125°C 12 Bits
Codes
+0.4 LSB (max)
SOT-23 ±1.0
-0.4 LSB (min)
−40°C ≤ T
A
≤ +85°C, V
A
= +2.7V to
+3.6V
+0.4 +1.0 LSB (max)
WSON
-0.4 -1.2 LSB (min)
INL Integral Non-Linearity
+1.0 LSB (max)
SOT-23
-1.1 LSB (min)
T
A
= 125°C, V
A
= +2.7v to +3.6V
+1.0 LSB (max)
WSON
-1.3 LSB (min)
+0.5 +1.0 LSB (max)
−40°C ≤ T
A
≤ +85°C, V
A
= +2.7V to +3.6V
DNL Differential Non-Linearity −0.3 -0.9 LSB (min)
T
A
= 125°C, V
A
= +2.7v to +3.6V ±1.0 LSB (max)
LSB (max)
V
OFF
Offset Error −40°C ≤ T
A
≤ 125°C, V
A
= +2.7v to +3.6V ±0.1 ±1.2
LSB (min)
SOT-23 ±0.20 ±1.2 LSB (max)
GE Gain Error −40°C ≤ T
A
≤ 125°C, V
A
= +2.7 to +3.6V
WSON ±0.20 ±1.5 LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
Signal-to-Noise Plus V
A
= +2.7 to 5.25V, −40°C ≤ T
A
≤ 125°C
SINAD 72 70 dB (min)
Distortion Ratio f
IN
= 100 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V, −40°C ≤ T
A
≤ +85°C
72.5 70.8
f
IN
= 100 kHz, −0.02 dBFS
SNR Signal-to-Noise Ratio dB (min)
V
A
= +2.7 to 5.25V, T
A
= +125°C
70.6
f
IN
= 100 kHz, −0.02 dBFS
THD Total Harmonic Distortion V
A
= +2.7 to 5.25V, f
IN
= 100 kHz, −0.02 dBFS −80 dB (max)
Spurious-Free Dynamic
SFDR V
A
= +2.7 to 5.25V, f
IN
= 100 kHz, −0.02 dBFS 82 dB (min)
Range
ENOB Effective Number of Bits V
A
= +2.7 to 5.25V, f
IN
= 100 kHz, −0.02 dBFS 11.6 11.3 Bits (min)
Intermodulation Distortion,
V
A
= +5.25V, f
a
= 103.5 kHz, f
b
= 113.5 kHz −78 dB
Second Order Terms
IMD
Intermodulation Distortion,
V
A
= +5.25V, f
a
= 103.5 kHz, f
b
= 113.5 kHz −78 dB
Third Order Terms
V
A
= +5V 11 MHz
FPBW -3 dB Full Power Bandwidth
V
A
= +3V 8 MHz
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range 0 to V
A
V
I
DCL
DC Leakage Current ±1 µA (max)
Track Mode 30 pF
C
INA
Input Capacitance
Hold Mode 4 pF
(1) Tested limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
(2) Data sheet min/max specification limits are guaranteed by design, test, or statistical analysis.
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