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ADS7821PB bảng dữ liệu(PDF) 3 Page - Texas Instruments

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ADS7821PB bảng dữ liệu(HTML) 3 Page - Texas Instruments

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3
®
ADS7821
POWER SUPPLIES
Specified Performance
VDIG
Must be
≤ V
ANA
+4.75
+5
+5.25
DD
D
V
VANA
+4.75
+5
+5.25
DD
D
V
IDIG
0.3
D
mA
IANA
16
D
mA
Power Dissipation
fS = 100kHz
100
D
mW
TEMPERATURE RANGE
Specified Performance
–25
+85
DD
°C
Derated Performance
–55
+125
DD
°C
Storage
–65
+150
DD
°C
Thermal Resistance (
θ
JA)
Plastic DIP
75
D
°C/W
SOIC
75
D
°C/W
NOTES: (1) LSB means Least Significant Bit. For the 16-bit, 0 to +5V input ADS721, one LSB is 76
µV. (2) Typical rms noise at worst case transitions and
temperatures. (3) Adjustable to zero with external potentiometer as shown in Figure 6a. (4) Full scale error is the worst case of Full Scale untrimmed deviation from
ideal last code transition divided by the transition voltage and includes the effect of offset error. (5) All specifications in dB are referred to a full-scale input. (6) Full-
Power Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60dB, or 10 bits of accuracy. (7) Recovers to specified
performance after 2 x FS input overvoltage.
SPECIFICATIONS (CONT)
ELECTRICAL
TA = –25°C to +85°C, fS = 100kHz, VDIG = VANA = VD = +5V, using external reference, unless otherwise specified.
ADS7821P, U
ADS7821PB, UB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
ABSOLUTE MAXIMUM RATINGS
Analog Inputs: VIN ...................................................... –0.7V to VANA +0.3V
REF ................................... AGND2 –0.3V to +VANA +0.3V
CAP .......................................... Indefinite Short to AGND2,
Momentary Short to VANA
Ground Voltage Differences: DGND, AGND1, AGND2 ...................
±0.3V
VANA ....................................................................................................... 7V
VDIG to VANA ..................................................................................... +0.3V
VDIG ....................................................................................................... 7V
Digital Inputs ............................................................ –0.3V to +VDIG +0.3V
Maximum Junction Temperature ................................................... +165
°C
Internal Power Dissipation ............................................................. 825mW
Lead Temperature (soldering, 10s) ................................................ +300
°C
PACKAGE INFORMATION
PACKAGE DRAWING
PRODUCT
PACKAGE
NUMBER(1)
ADS7821P
Plastic DIP
246
ADS7821PB
Plastic DIP
246
ADS7821U
SOIC
217
ADS7821UB
SOIC
217
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
MINIMUM
SIGNAL-TO-
MAXIMUM
(NOISE +
SPECIFICATION
LINEARITY
DISTORTION)
TEMPERATURE
PRODUCT
ERROR (LSB)
RATIO (dB)
RANGE
PACKAGE
ADS7821P
±4
83
–25
°C to +85°C
Plastic DIP
ADS7821PB
±3
86
–25
°C to +85°C
Plastic DIP
ADS7821U
±4
83
–25
°C to +85°C
SOIC
ADS7821UB
±3
86
–25
°C to +85°C
SOIC
ORDERING INFORMATION
ELECTROSTATIC
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from per-
formance degradation to complete device failure. Burr-
Brown Corporation recommends that all integrated circuits
be handled and stored using appropriate ESD protection
methods.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet
published specifications.


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