ADS8860_14 Datasheet, PDF (3/46 Pages) Texas Instruments – 16-Bit, 1-MSPS, Serial Interface, microPower, Miniature Single-Ended Input, SAR Analog-to-Digital Converter

ADS8860
www.ti.com
SBAS569A – MAY 2013 – REVISED DECEMBER 2013
ELECTRICAL CHARACTERISTICS
All minimum and maximum specifications are at T_A = –40°C to +85°C, AVDD = 3 V, DVDD = 3 V, V_REF = 5 V,
and f_SAMPLE = 1 MSPS, unless otherwise noted.
Typical specifications are at T_A = +25°C, AVDD = 3 V, and DVDD = 3 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
ANALOG INPUT
Full-scale input span⁽¹⁾
Operating input range⁽¹⁾
AINP – AINN
AINP
AINN
0
–0.1
–0.1
V_REF
V_REF + 0.1
+ 0.1
C_I
Input capacitance
AINP and AINN terminal to GND
59
Input leakage current
During acquisition for dc input
5
SYSTEM PERFORMANCE
Resolution
16
NMC No missing codes
16
DNL Differential linearity
–0.99
±0.6
1
INL
Integral linearity⁽³⁾
–2
±0.8
2
E_O
Offset error⁽⁴⁾
Offset error drift with temperature
–4
±1
4
±1.5
E_G
Gain error
Gain error drift with temperature
–0.01
±0.005
0.01
±0.15
CMRR Common-mode rejection ratio
PSRR Power-supply rejection ratio
With common-mode input signal = 5 V_PP at dc
At mid-code
90
100
80
Transition noise
0.5
SAMPLING DYNAMICS
t_conv
Conversion time
t_ACQ
Acquisition time
Maximum throughput rate
with or without latency
500
710
290
1000
Aperture delay
4
Aperture jitter, RMS
5
Step response
Settling to 16-bit accuracy
290
Overvoltage recovery
Settling to 16-bit accuracy
290
UNIT
V
V
V
pF
nA
Bits
Bits
LSB ⁽²⁾
LSB ⁽²⁾
mV
µV/°C
%FSR
ppm/°C
dB
dB
LSB
ns
ns
kHz
ns
ps
ns
ns
(1) Ideal input span, does not include gain or offset error.
(2) LSB = least significant bit.
(3) This parameter is the endpoint INL, not best-fit.
(4) Measured relative to actual measured reference.
Copyright © 2013, Texas Instruments Incorporated
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