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ADS5272 Datasheet(Fiches technique) 3 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Numéro de pièce ADS5272
Description  8-Channel, 12-Bit, 65MSPS ADC with Serial LVDS Interface
Télécharger  16 Pages
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Fabricant  BURR-BROWN [Burr-Brown (TI)]
Site Internet  http://www.burr-brown.com
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 3 page
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ADS5272
SBAS324 − JUNE 2004
www.ti.com
3
ELECTRICAL CHARACTERISTICS
TMIN = −40°C, and TMAX = +85°C. Typical values are at TA = 25°C, clock frequency = maximum specified, 50% clock duty cycle, AVDD = 3.3V,
LVDD = 3.3V, −1dBFS, internal voltage reference, and LVDS buffer current at 3.5mA per channel, unless otherwise noted.
ADS5272
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY
No Missing Codes
Assured
DNL
Differential Nonlinearity
fIN = 5MHz
−0.9
±0.5
0.9
LSB
INL
Integral Nonlinearity
fIN = 5MHz
−2.0
±0.6
2.0
LSB
Offset Error(1)
TBD
±0.2
TBD
%FS
Offset Temperature Coefficient
14
ppm/
°C
Fixed Attenuation in Channel(2)
1
%FS
Variable Attenuation in Channel(3)
±0.2
%FS
Gain Error(4)
REFT − REFB
TBD
±1.0
TBD
%FS
Gain Temperature Coefficient(5)
44
ppm/
°C
POWER SUPPLY
ICC
Total Supply Current
VIN = FS, FIN = 5MHz
302
mA
I(AVDD)
Analog Supply Current
VIN = FS, FIN = 5MHz
TBD
mA
I(LVDD)
Digital Output Driver Supply Current
VIN = FS, FIN = 5MHz, LVDS Into 100Ω Load
TBD
mA
Power Dissipation
996
TBD
mW
Power Down
Clock Running
90
mW
REFERENCE VOLTAGES
VREFT
Reference Top (internal)
1.95
2.0
2.05
V
VREFB
Reference Bottom (internal)
0.95
1.0
1.05
V
VCM
Common-Mode Voltage
1.45
1.5
1.55
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 Input Current(7)
2.0
mA
ANALOG INPUT
Differential Input Capacitance
7.0
pF
Analog Input Common-Mode Range
VCM ± 0.05
V
Differential Input Voltage Range
1.5
2.02
VPP
Voltage Overload Recovery Time
Differential Input Signal at 4VPP
Recovery to Within 1% of Code
4.0
CLK Cycles
Input Bandwidth
−3dBFS
300
MHz
DIGITAL DATA OUTPUTS
Data Bit Rate
340
780
MBPS
SERIAL INTERFACE
SCLK
Serial Clock Input Frequency
20
MHz
VIN LOW
Input Low Voltage
0
0.6
V
VIN HIGH
Input High Voltage
2.1
VDD
V
Input Current
±10
µA
Input Pin Capacitance
5.0
pF
(1)
Offset error is the deviation of the average code from mid-code for a zero input. Offset error is expressed in terms of % of full-scale.
(2)
Fixed attenuation in the channel arises due to a fixed attenuation of about 1% in the sample-and-hold amplifier. When the differential voltage at the analog input pins are
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 [VREF is defined
as (REFT − REFB)].
(3)
Variable attenuation in the channel refers to the attenuation of the signal in the channel over and above the fixed attenuation.
(4)
The reference voltages are trimmed at production so that (VREFT − VREFB) is within ± 25mV of the ideal value of 1V. It does not include fixed attenuation.
(5)
The gain temperature coefficient refers to the temperature coefficient of the attenuation in the channel. It does not account for the variation of the reference voltages with
temperature.
(6)
VCM provides the common-mode current for the inputs of all eight channels when the inputs are AC-coupled. The VCM output current specified is the additional drive of
the VCM buffer if loaded externally.
(7)
Average current drawn from the reference pins in the external reference mode.




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