Datasheet
ELECTRICAL CHARACTERISTICS
ADS8329
ADS8330
www.ti.com
................................................................................................................................................... SLAS516C – DECEMBER 2006 – REVISED JULY 2009
T
A
= – 40 ° C to 85 ° C, +VA = 2.7 V to 3.6 V, +VBD = 1.65 V to 1.5 × (+VA), V
REF
= 2.5 V, f
SAMPLE
= 1 MHz for 3 V ≤ +VA ≤ 3.6 V,
f
SAMPLE
= 900 kHz for 3 V < +VA ≤ 2.7 V using external clock (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ANALOG INPUT
Full-scale input voltage
(1)
+IN – ( – IN) or (+INx – COM) 0 +V
REF
V
+IN, +IN0, +IN1 AGND – 0.2 +VA + 0.2
Absolute input voltage V
– IN or COM AGND – 0.2 AGND + 0.2
Input capacitance 40 45 pF
No ongoing conversion,
Input leakage current – 1 1 nA
DC Input
At dc 108
Input channel isolation, ADS8330 only dB
V
I
= ± 1.25 V
PP
at 50 kHz 101
SYSTEM PERFORMANCE
Resolution 16 Bits
No missing codes 16 Bits
ADS8329IB,
– 1.75 ± 1 1.75
ADS8330IB
INL Integral linearity LSB
(2)
ADS8329I, ADS8330I – 2.5 ± 1.5 2.5
ADS8329IB,
– 1 ± 0.5 1
Differential
ADS8330IB
DNL LSB
(2)
linearity
ADS8329I, ADS8330I – 1 ± 0.8 2
ADS8329IB,
– 0.5 ± 0.05 0.5
ADS8330IB
E
O
Offset error
(3)
mV
ADS8329I, ADS8330I – 0.8 ± 0.2 0.8
Offset error drift FSR = 2.5 V +0.8 ppm/ ° C
E
G
Gain error – 0.25 – 0.04 0.25 %FSR
Gain error drift +0.5 ppm/ ° C
At dc 70
CMRR Common-mode rejection ratio dB
V
I
= 0.4 V
PP
at 1 MHz 50
Noise 33 µ V RMS
PSRR Power-supply rejection ratio At FFFFh output code
(3)
78 dB
SAMPLING DYNAMICS
t
CONV
Conversion time 18 CCLK
t
SAMPLE1
Manual trigger 3
Acquisition time CCLK
t
SAMPLE2
Auto trigger 3
Throughput rate 1 MHz
Aperture delay 5 ns
Aperture jitter 10 ps
Step response 100 ns
Overvoltage recovery 100 ns
(1) Ideal input span, does not include gain or offset error.
(2) LSB means least significant bit.
(3) Measured relative to an ideal full-scale input [+IN – ( – IN)] of 2.5 V when +VA = 3 V.
Copyright © 2006 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): ADS8329 ADS8330