ADS7830IPWRG4 Datasheet, PDF (3/26 Pages) Texas Instruments – 8-Bit, 8-Channel Sampling ANALOG-TO-DIGITAL CONVERTER

ADS7830
www.ti.com
SBAS302C – DECEMBER 2003 – REVISED OCTOBER 2012
ELECTRICAL CHARACTERISTICS: +2.7V
At T_A = –40°C to +125°C, +V_DD = +2.7V, V_REF = +2.5V, and SCL Clock Frequency = 3.4MHz (High-Speed Mode), unless
otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG INPUT
Full-Scale Input Scan
Absolute Input Range
Positive Input – Negative Input
0
Positive Input
–0.2
Negative Input
–0.2
V_REF
V
+V_DD + 0.2
V
+0.2
V
Capacitance
25
pF
Leakage Current
±1
µA
SYSTEM PERFORMANCE
No Missing Codes
Integral Linearity Error
8
Bits
±0.1
±0.5
LSB ⁽¹⁾
Differential Linearity Error
±0.1
±0.5
LSB
Offset Error
+0.5
+1
LSB
Offset Error Match
±0.05
±0.25
LSB
Gain Error
±0.1
±0.5
LSB
Gain Error Match
±0.05
±0.25
LSB
Noise
Power-Supply Rejection
100
µV_RMS
72
dB
SAMPLING DYNAMICS
High-Speed Mode: SCL = 3.4MHz
70
kSPS ⁽²⁾
Throughput Frequency
Fast Mode: SCL = 400kHz
10
kSPS
Standard Mode, SCL = 100kHz
2.5
kSPS
Conversion Time
5
µs
AC ACCURACY
Total Harmonic Distortion
Signal-to-Ratio
Signal-to-(Noise+Distortion) Ratio
Spurious-Free Dynamic Range
Isolation Channel-to-Channel
V_IN = 2.5V_PP at 1kHz
V_IN = 2.5V_PP at 1kHz
V_IN = 2.5V_PP at 1kHz
V_IN = 2.5V_PP at 1kHz
–72
dB ⁽³⁾
50
dB
49
dB
68
dB
90
dB
VOLTAGE REFERENCE OUTPUT
Range
Internal Reference Drift
Output Impedance
T_A = –40°C to +85°C
T_A = –40°C to +125°C
T_A = –40°C to +85°C
T_A = –40°C to +125°C
Internal Reference ON
Internal Reference OFF
2.48
2.52
V
2.47
2.53
V
15
ppm/°C
40
ppm/°C
110
Ω
1
GΩ
Quiescent Current
Internal Reference ON,
SCL and SDA pulled HIGH
850
µA
VOLTAGE REFERENCE INPUT
Range
Resistance
0.05
V_DD
V
1
GΩ
Current Drain
High-Speed Mode: SCL= 3.4MHz
20
µA
(1) LSB means least significant bit. When V_REF = 2.5V, 1LSB is 9.8mV.
(2) kSPS means kilo samples-per-second.
(3) THD measured out to the 9th-harmonic.
Copyright © 2003–2012, Texas Instruments Incorporated
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