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ADS5231 데이터시트(PDF) 4 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
부품명 ADS5231
상세설명  Dual, 12-Bit, 40MSPS, 3.3V Analog-to-Digital Converter
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제조업체  BURR-BROWN [Burr-Brown (TI)]
홈페이지  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

ADS5231 데이터시트(HTML) 4 Page - Burr-Brown (TI)

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ELECTRICAL CHARACTERISTICS
ADS5231
SBAS295A – JULY 2004 – REVISED JANUARY 2007
T
MIN = –40°C and TMAX = +85°C. Typical values are at TA = +25°C, clock frequency = 40MSPS, 50% clock duty cycle,
AVDD = 3.3V, VDRV = 3.3V, transformer-coupled inputs, –1dBFS, I
SET = 56.2kΩ, and internal voltage reference, unless
otherwise noted.
ADS5231
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY
No Missing Codes
Tested
DNL Differential Nonlinearity
fIN = 5MHz
–0.9
±0.3
+0.9
LSB
INL Integral Nonlinearity
fIN = 5MHz
–2.5
±0.4
+2.5
LSB
Offset Error(1)
–0.75
±0.2
+0.75
% FS
Offset Temperature Coefficient(2)
±6
ppm/
°C
Fixed Attenuation in Channel(3)
1
%FS
Fixed Attenuation Matching Across Channels
0.01
0.2
dB
Gain Error/Reference Error(4)
–3.5
±1.0
+3.5
% FS
Gain Error Temperature Coefficient
±40
ppm/
°C
POWER REQUIREMENTS(5)
Internal Reference
Power Dissipation(5)
Analog Only (AVDD)
235.5
271
mW
Output Driver (VDRV)
85.5
109
mW
Total Power Dissipation
321
380
mW
External Reference
Power Dissipation
Analog Only (AVDD)
200
mW
Output Driver (VDRV)
85.5
mW
Total Power Dissipation
285.5
mW
Total Power-Down
Clock Running
83
mW
REFERENCE VOLTAGES
VREFT Reference Top (internal)
1.9
2.0
2.1
V
VREFB Reference Bottom (internal)
0.9
1.0
1.1
V
VCM Common-Mode Voltage
1.4
1.5
1.6
V
VCM Output Current(6)
±50mV Change in Voltage
±2
mA
VREFT Reference Top (external)
1.875
V
VREFB Reference Bottom (external)
1.125
V
External Reference Common-Mode
VCM ± 50mV
V
External Reference Input Current(7)
1.0
mA
(1)
Offset error is the deviation of the average code from mid-code with –1dBFS sinusoid from ideal mid-code (2048). Offset error is
expressed in terms of % of full-scale.
(2)
If the offset at temperatures T1 and T2 are O1 and O2, respectively (where O1 and O2 are measured in LSBs), the offset temperature
coefficient in ppm/
°C is calculated as (O
1 – O2)/(T1 – T2) × 1E6/4096.
(3)
Fixed attenuation in the channel arises because of a fixed attenuation in the sample-and-hold amplifier. When the differential voltage at
the analog input pins is changed from –VREF to +VREF, the swing of the output code is expected to deviate from the full-scale code
(4096LSB) by the extent of this fixed attenuation. NOTE: VREF is defined as (REFT – REFB).
(4)
The reference voltages are trimmed at production so that (VREFT – VREFB) is within ± 35mV of the ideal value of 1V. This specification
does not include fixed attenuation.
(5)
Supply current can be calculated from dividing the power dissipation by the supply voltage of 3.3V.
(6)
The VCM output current specified is the drive of the VCM buffer if loaded externally.
(7)
Average current drawn from the reference pins in the external reference mode.
4
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