ABSOLUTE MAXIMUM RATINGS(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments
recommends that all integrated circuits be handled with appropriate
precautions. Failure to observe proper handling and installation
procedures can cause damage.
AVDD to AGND ...................................................................... –0.3V to +6V
DVDD to DGND ...................................................................... –0.3V to +6V
Input Current ............................................................... 100mA, Momentary
Input Current ................................................................. 10mA, Continuous
A
IN ................................................................... GND –0.5V to AVDD + 0.5V
AVDD to DVDD ........................................................................... –6V to +6V
AGND to DGND ................................................................. –0.3V to +0.3V
Digital Input Voltage to GND .................................... –0.3V to DVDD + 0.3V
Digital Output Voltage to GND ................................. –0.3V to DVDD + 0.3V
Maximum Junction Temperature ................................................... +150°C
Operating Temperature Range ......................................... –40°C to +85°C
Storage Temperature Range .......................................... –60°C to +100°C
Lead Temperature (soldering, 10s) .............................................. +300°C
Electrostatic discharge can cause damage ranging from perfor-
mance degradation to complete device failure. Texas Instruments
recommends that all integrated circuits be handled and stored using
appropriate ESD protection methods.
NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings” may
cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
PACKAGE/ORDERING INFORMATION
SPECIFIED
PACKAGE
DESIGNATOR
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
PRODUCT
PACKAGE-LEAD
ADS1218Y
TQFP-48
PFB
–40°C to +85°C
ADS1218Y
ADS1218Y/250
ADS1218Y/2K
Tape and Reel, 250
Tape and Reel, 2000
"
"
"
"
"
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000 pieces
of “ADS1218Y/2K” will get a single 2000-piece Tape and Reel.
ELECTRICAL CHARACTERISTICS: AVDD = 5V
All specifications TMIN to TMAX, AVDD = +5V, DVDD = +2.7V to 5.25V, fMOD = 19.2kHz, fOSC = 2.4576MHz, PGA = 1, Buffer ON, RDAC = 150kΩ, fDATA = 10Hz,
VREF ≡ (REF IN+) – (REF IN–) = +2.5V, unless otherwise specified.
ADS1218
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT (AIN0 – AIN7, AINCOM
)
Analog Input Range
Buffer OFF
Buffer ON
(In+) – (In–), See Block Diagram
Buffer OFF
AGND – 0.1
AGND + 0.05
AVDD + 0.1
AVDD – 1.5
±VREF /PGA
V
V
V
MΩ
nA
Full-Scale Input Voltage Range
Differential Input Impedance
Input Current
5/PGA
0.5
Buffer ON
Bandwidth
Fast Settling Filter
Sinc2 Filter
Sinc3 Filter
–3dB
–3dB
–3dB
0.469 • fDATA
0.318 • fDATA
0.262 • fDATA
Hz
Hz
Hz
Programmable Gain Amplifier
Input Capacitance
Input Leakage Current
Burnout Current Sources
User Selectable Gain Ranges
1
128
9
5
2
pF
pA
µA
Modulator OFF, T = 25°C
OFFSET DAC
Offset DAC Range
±VREF /(2 • PGA)
V
Bits
%
Offset DAC Monotonicity
Offset DAC Gain Error
Offset DAC Gain Error Drift
8
±10
1
ppm/°C
SYSTEM PERFORMANCE
Resolution
No Missing Codes
Integral Non-Linearity
Offset Error(1)
Offset Drift(1)
Gain Error
Gain Error Drift(1)
Common-Mode Rejection
24
Bits
Bits
% of FS
ppm of FS
sinc3
End Point Fit
Before Calibration
24
±0.0015
7.5
0.02
0.005
0.5
ppm of FS/°C
After Calibration
%
ppm/°C
dB
at DC
100
f
CM = 60Hz, fDATA = 10Hz
130
120
120
100
100
dB
dB
dB
dB
fCM = 50Hz, fDATA = 50Hz
fCM = 60Hz, fDATA = 60Hz
Normal-Mode Rejection
f
f
SIG = 50Hz, fDATA = 50Hz
SIG = 60Hz, fDATA = 60Hz
dB
Output Noise
Power-Supply Rejection
See Typical Characteristics
95
(2)
at DC, dB = –20 log(∆VOUT /∆VDD
)
80
dB
ADS1218
2
SBAS187
BB [ BURR-BROWN CORPORATION ]
