ADS7820 Burr-Brown Corporation, ADS7820 Datasheet - Page 3

• Manufacturer Part Number: ADS7820
• Description: 12-Bit 10ms Sampling CMOS ANALOG-to-DIGITAL CONVERTER
• Manufacturer: Burr-Brown Corporation

NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
NOTES: (1) LSB means Least Significant Bit. For the 12-bit, 0 to +5V input ADS7820, one LSB is 1.22mV. (2) Typical rms noise at worst case transitions and
temperatures. (3) Adjustable to zero with external potentiometer as shown in Figure 4b. (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.
ABSOLUTE MAXIMUM RATINGS
PACKAGE INFORMATION
ORDERING INFORMATION
SPECIFICATIONS
ELECTRICAL
T
A
PRODUCT
ADS7820P
ADS7820PB
ADS7820U
ADS7820UB
PARAMETER
POWER SUPPLIES
Specified Performance
Power Dissipation
TEMPERATURE RANGE
Specified Performance
Derated Performance
Storage
Thermal Resistance (
Analog Inputs: V
Ground Voltage Differences: DGND, AGND1, AGND2 ................... 0.3V
V
V
V
Digital Inputs ............................................................ –0.3V to +V
Maximum Junction Temperature ................................................... +165 C
Internal Power Dissipation ............................................................. 825mW
Lead Temperature (soldering, 10s) ................................................ +300 C
PRODUCT
ADS7820P
ADS7820PB
ADS7820U
ADS7820UB
= –40 C to +85 C, f
ANA
DIG
DIG
V
V
+I
+I
Plastic DIP
SOIC
DIG
ANA
DIG
ANA
to V
....................................................................................................... 7V
....................................................................................................... 7V
ANA
..................................................................................... +0.3V
REF .................................... +V
CAP ........................................... Indefinite Short to AGND2
IN
.................................................... –0.7V to +V
ERROR (LSB)
S
LINEARITY
= 100kHz, V
MAXIMUM
JA
)
PACKAGE
Plastic DIP
Plastic DIP
1.0
0.5
1.0
0.5
SOIC
SOIC
DIG
= V
DISTORTION)
SIGNAL-TO-
ANA
RATIO (dB)
(CONT)
MINIMUM
(NOISE +
= +5V, using internal reference, unless otherwise specified.
ANA
70
72
70
72
Must be
Momentary Short to V
CONDITIONS
PACKAGE DRAWING
f
+0.3V to AGND2 –0.3V
S
= 100kHz
NUMBER
246
246
217
217
V
ANA
SPECIFICATION
TEMPERATURE
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
ANA
DIG
(1)
RANGE
+0.3V
+0.3V
ANA
3
+4.75
+4.75
–40
–55
–65
MIN
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.
PACKAGE
Plastic DIP
Plastic DIP
ADS7820P/U
SOIC
SOIC
TYP
0.3
+5
+5
16
75
75
ELECTROSTATIC
DISCHARGE SENSITIVITY
+5.25
+5.25
+125
+150
100
+85
MAX
MIN
ADS7820PB/UB
ADS7820
TYP
MAX
UNITS
mW
mA
mA
C/W
C/W
V
V
C
C
C
®