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ADS8548SPM Datenblatt(PDF) 10 Page - Texas Instruments

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Teilenummer ADS8548SPM
Bauteilbeschribung  16-Bit, 8-Channel, Simultaneous Sampling ADCs
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

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ADS8528, ADS8548, ADS8568
SBAS543C – AUGUST 2011 – REVISED FEBRUARY 2016
www.ti.com
Product Folder Links: ADS8528 ADS8548 ADS8568
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
(1)
Reference output current is not limited internally.
(2)
Specified by design.
7.5 Electrical Characteristics: General
All minimum and maximum specifications are at TA = –40°C to +125°C, specified supply voltage range, VREF = 2.5 V
(internal), VIN = ±10 V, and fDATA = max, unless otherwise noted. Typical values are at TA = 25°C, HVDD = 15 V, HVSS =
–15 V, AVDD = 5 V, and DVDD = 3.3 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG INPUT
CHXX
Bipolar full-scale range
RANGE pin, RANGE bit = 0
–4 VREF
4 VREF
V
RANGE pin, RANGE bit = 1
–2 VREF
2 VREF
Input capacitance
Input range = ±4 VREF
10
pF
Input range = ±2 VREF
20
Input leakage current
No ongoing conversion
–1
1
μA
Aperture delay
5
ns
Aperture delay matching
Common CONVST for all channels
100
ps
Aperture jitter
50
ps
PSRR
Power-supply rejection ratio
At output code FFFFh, related to HVDD and HVSS
–78
dB
REFERENCE VOLTAGE OUTPUT (REFOUT)
VREF
Reference voltage
2.5-V operation, REFDAC = 3FFh
2.485
2.5
2.515
V
2.5-V operation, REFDAC = 3FFh at 25°C
2.496
2.5
2.504
3.0-V operation, REFDAC = 3FFh
2.985
3.0
3.015
3.0-V operation, REFDAC = 3FFh at 25°C
2.995
3.0
3.005
dVREF/dT
Reference voltage drift
±10
ppm/°C
PSRR
Power-supply rejection ratio
At output code FFFFh, related to AVDD
–77
dB
IREFOUT
Output current
At dc current
–2
2
mA
IREFSC
Short-circuit current(1)
50
mA
tREFON
Turn-on settling time
10
ms
External load capacitance
At REF_xP, REF_xN pins
4.7
10
μF
At REFIO pin
100
470
nF
REFDAC
Tuning range
Internal reference output voltage range
0.2 VREF
VREF
V
REFDAC resolution
10
Bits
DNLDAC
REFDAC differential nonlinearity
–1
±0.1
1
LSB
INLDAC
REFDAC integral nonlinearity
–2
±0.1
2
LSB
VOSDAC
REFDAC offset error
VREF = 0.5 V (DAC = 0CDh)
–4
±0.65
4
LSB
REFERENCE VOLTAGE INPUT (REFIN)
VREFIN
Reference input voltage
0.5
2.5
3.025
V
Input resistance
100
M
Input capacitance
5
pF
Reference input current
1
μA
DIGITAL INPUTS(2) (CMOS with Schmitt-Trigger Logic Family)
High-level input voltage
0.7 DVDD
DVDD +
0.3
V
Low-level input voltage
DGND –
0.3
0.3 DVDD
V
Input current
VI = DVDD to DGND
–50
50
nA
Input capacitance
5
pF
DIGITAL OUTPUTS(2)
Output capacitance
5
pF
Load capacitance
30
pF
High-impedance-state output current
–50
50
nA
Logic family
CMOS
VOH
High-level output voltage
IOH = 100 μA
DVDD –
0.6
V
VOL
Low-level output voltage
IOH = –100 μA
DGND +
0.4
V


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