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ADS7230IRSARG4 Datasheet(PDF) 5 Page - Texas Instruments

Part # ADS7230IRSARG4
Description  LOW-POWER, 12-BIT, 1MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7230IRSARG4 Datasheet(HTML) 5 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
ADS7229
ADS7230
www.ti.com ............................................................................................................................................................... SBAS437A – MAY 2008 – REVISED JUNE 2009
At TA = –40°C to +85°C, +VA = 2.7V to 3.6V, +VBD = 1.65V to 1.5 × (+VA), VREF = 2.5V, fSAMPLE = 1MHz for 3V ≤ +VA ≤
3.6V, and fSAMPLE = 900kHz for 3V < +VA ≤ 2.7V using external clock, unless otherwise noted.
ADS7229, ADS7230
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG INPUT
FSR
Full-scale input voltage(1)
+IN – (–IN) or (+INx – COM)
0
VREF
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
45
pF
No ongoing conversion,
Input leakage current
50
nA
dc Input
At dc
108
Input channel isolation, ADS7230 only
dB
VI = ±1.25VPP at 50kHz
101
SYSTEM PERFORMANCE
Resolution
12
Bits
No missing codes
12
Bits
INL
Integral linearity
–0.5
±0.15
0.5
LSB(2)
DNL
Differential linearity
–0.5
±0.12
0.5
LSB(2)
EO
Offset error(3)
–0.8
±0.07
0.8
mV
Offset error drift
FSR = 2.5V
±0.1
ppm/°C
EG
Gain error
–0.1
±0.008
0.1
%FSR
Gain error drift
±0.3
ppm/°C
At dc
70
CMRR
Common-mode rejection ratio
dB
VI = 0.4VPP at 1MHz
50
Noise
33
µV
RMS
PSRR
Power-supply rejection ratio
At FFFFh output code(3)
78
dB
SAMPLING DYNAMICS
tCONV
Conversion time
18
CCLK
tSAMPLE1
Manual trigger
3
Acquisition time
CCLK
tSAMPLE2
Auto trigger
3
2.7V
≤ +VA < 3.0V
0.9
Throughput rate
MHz
3.0V
≤ +VA ≤ 3.64V
1
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 2.5V when +VA = 3V.
Copyright © 2008–2009, Texas Instruments Incorporated
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Product Folder Link(s): ADS7229 ADS7230


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