Datasheet

ADC128S022
SNAS334E –AUGUST 2005–REVISED MARCH 2013 www.ti.com
ADC128S022 Converter Electrical Characteristics
(1)
The following specifications apply for AGND = DGND = 0V, f
SCLK
= 0.8 MHz to 3.2 MHz, f
SAMPLE
= 50 ksps to 200 ksps, C
L
=
50pF, unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
: all other limits T
A
= 25°C.
Symbol Parameter Conditions Typical Limits
(2)
Units
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes 12 Bits
V
A
= V
D
= +3.0V ±0.3 ±1 LSB (max)
Integral Non-Linearity (End Point
INL
Method)
V
A
= V
D
= +5.0V ±0.4 ±1 LSB (max)
+0.3 +0.9 LSB (max)
V
A
= V
D
= +3.0V
−0.2 −0.7 LSB (min)
DNL Differential Non-Linearity
+0.5 +1.0 LSB (max)
V
A
= V
D
= +5.0V
−0.3 −0.7 LSB (min)
V
A
= V
D
= +3.0V 0.8 ±2.3 LSB (max)
V
OFF
Offset Error
V
A
= V
D
= +5.0V 1.2 ±2.3 LSB (max)
V
A
= V
D
= +3.0V ±0.05 ±1.5 LSB (max)
OEM Offset Error Match
V
A
= V
D
= +5.0V ±0.2 ±1.5 LSB (max)
V
A
= V
D
= +3.0V 0.5 ±2.0 LSB (max)
FSE Full Scale Error
V
A
= V
D
= +5.0V 0.3 ±2.0 LSB (max)
V
A
= V
D
= +3.0V ±0.05 ±1.5 LSB (max)
FSEM Full Scale Error Match
V
A
= V
D
= +5.0V ±0.2 ±1.5 LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
V
A
= V
D
= +3.0V 8 MHz
FPBW Full Power Bandwidth (−3dB)
V
A
= V
D
= +5.0V 11 MHz
V
A
= V
D
= +3.0V,
73 70 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
SINAD Signal-to-Noise Plus Distortion Ratio
V
A
= V
D
= +5.0V,
73 70 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= V
D
= +3.0V,
73 70.8 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
SNR Signal-to-Noise Ratio
V
A
= V
D
= +5.0V,
73 70.8 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= V
D
= +3.0V,
−89 −74 dB (max)
f
IN
= 39.9 kHz, −0.02 dBFS
THD Total Harmonic Distortion
V
A
= V
D
= +5.0V,
−90 −74 dB (max)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= V
D
= +3.0V,
91 75 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
SFDR Spurious-Free Dynamic Range
V
A
= V
D
= +5.0V,
91 75 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= V
D
= +3.0V, f
IN
= 39.9 kHz 11.8 11.3 Bits (min)
ENOB Effective Number of Bits
V
A
= V
D
= +5.0V, f
IN
= 39.9 kHz, −0.02
11.8 11.3 Bits (min)
dBFS
V
A
= V
D
= +3.0V, f
IN
= 20 kHz 81 dB
ISO Channel-to-Channel Isolation
V
A
= V
D
= +5.0V, f
IN
= 20 kHz, −0.02
80 dB
dBFS
(1) Data sheet min/max specification limits are specified by design, test, or statistical analysis.
(2) Tested limits are specified to Texas Instruments' AOQL (Average Outgoing Quality Level).
4 Submit Documentation Feedback Copyright © 2005–2013, Texas Instruments Incorporated
Product Folder Links: ADC128S022