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ADC12048CIVF Fiches technique(PDF) 7 Page - Texas Instruments

No de pièce ADC12048CIVF
Description  ADC12048 12-Bit Plus Sign 216 kHz 8-Channel Sampling Analog-to-Digital Converter
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

ADC12048CIVF Fiches technique(HTML) 7 Page - Texas Instruments

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ADC12048
www.ti.com
SNAS105B – APRIL 2000 – REVISED MARCH 2013
Reference Inputs
The following specifications apply to the ADC12048 for VA+ = VD+ = 5V, VREF+ = 4.096V, VREF− = 0.0V, 12-bit + sign
conversion mode, fCLK = 12.0 MHz, RS = 25Ω, source impedance for VREF+ and VREF− ≤ 1Ω, fully differential input with fixed
2.048V common-mode voltage, and minimum acquisition time, unless otherwise specified. Boldface limits apply for TA = TJ
= TMIN to TMAX; all other limits TA = TJ = 25°C
Unit
Symbol
Parameter
Conditions
Typical(1)
Limits(2)
(Limit)
IREF
Reference Input Current
VREF+ 4.096V, VREF− = 0V
Analog Input Signal: 1 kHz(3)
145
μA
80 kHz
136
μA
CREF
Reference Input Capacitance
85
pF
(1)
Typicals are at TA = 25°C and represent most likely parametric norm.
(2)
Limits are ensured to AOQL (Average Outgoing Quality Level).
(3)
The reference input current is a DC average current drawn by the reference input with a full-scale sinewave input. The ADC12048 is
continuously converting with a throughput rate of 206 kHz.
Digital Logic Input/Output Characteristics
The following specifications apply to the ADC12048 for VA+ = VD+ = 5V, VREF+ = 4.096V, VREF− = 0.0V, 12-bit + sign
conversion mode, fCLK = 12.0 MHz, RS = 25Ω, source impedance for VREF+ and VREF− ≤ 1Ω, fully differential input with fixed
2.048V common-mode voltage, and minimum acquisition time, unless otherwise specified. Boldface limits apply for TA = TJ
= TMIN to TMAX; all other limits TA = TJ = 25°C
Unit
Symbol
Parameter
Conditions
Typical(1)
Limits (2)
(Limit)
VIH
Logic High Input Voltage
VA+ = VD+ = 5.5V
2.0
V (min)
VIL
Logic Low Input Voltage
VA+ = VD+ = 4.5V
0.8
V (max)
IIH
Logic High Input Current
VIN = 5V
0.035
2.0
μA (max)
IIL
Logic Low Input Current
VIN = 0V
−0.035
−2.0
μA (max)
VOH
Logic High Output Voltage
VA+ = VD+ = 4.5V IOUT = −1.6 mA
2.4
V (min)
VOL
Logic Low Output Voltage
VA+ = VD+ = 4.5V IOUT = 1.6 mA
0.4
V (max)
IOFF
TRI-STATE Output Leakage
VOUT = 0V
±2.0
μA (max)
Current
VOUT = 5V
CIN
D12–D0 Input Capacitance
10
pF
(1)
Typicals are at TA = 25°C and represent most likely parametric norm.
(2)
Limits are ensured to AOQL (Average Outgoing Quality Level).
Converter AC Characteristics
The following specifications apply to the ADC12048 for VS+ = VD+ = 5V, VREF+ = 4.096V, VREF− = 0.0V, 12-bit + sign
conversion mode, fCLK = 12.0 MHz, RS = 25Ω, source impedance for VREF+ and VREF− ≤ 1Ω, fully differential input with fixed
2.048V common-mode voltage, and minimum acquisition time, unless otherwise specified. Boldface limits apply for TA = TJ
= TMIN to TMAX; all other limits TA = TJ = 25°C
Unit
Symbol
Parameter
Conditions
Typical(1)
Limits(2)
(Limit)
tZ
Auto Zero Time
78
78 clks + 120 ns
clks (max)
tCAL
Full Calibration Time
4946
4946 clks + 120 ns
clks (max)
50
%
CLK Duty Cycle
40
% (min)
60
% (max)
tCONV
Conversion Time
Sync-Out Mode
44
44
clks (max)
tAcqSYNCOUT
Minimum for 13 Bits
9
9 clks + 120 ns
clks (max)
Acquisition Time
(Programmable)
Maximum for 13 Bits
79
79 clks + 120 ns
clks (max)
(1)
Typicals are at TA = 25°C and represent most likely parametric norm.
(2)
Limits are ensured to AOQL (Average Outgoing Quality Level).
Copyright © 2000–2013, Texas Instruments Incorporated
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