MCP3221 Microchip Technology, MCP3221 Datasheet - Page 2

• Manufacturer Part Number: MCP3221
• Description: Low Power 12-Bit A/D Converter With I2C Interface
• Manufacturer: Microchip Technology

MCP3221
1.0
Absolute Maximum Ratings †
V
Analog input pin w.r.t. V
SDA and SCL pins w.r.t. V
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied ................-65°C to +125°C
Maximum Junction Temperature .......... .........................150°C
ESD protection on all pins (HBM) ................................. 4 kV
† Stresses above those listed under “Maximum ratings” may
cause permanent damage to the device. This is a stress rating
only and functional operation of the device at those or any
other conditions above those indicated in the operational list-
ings of this specification is not implied. Exposure to maximum
rating conditions for extended periods may affect device reli-
ability.
DC ELECTRICAL SPECIFICATIONS
DS21732B-page 2
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
T
DC Accuracy
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
Dynamic Performance
Total Harmonic Distortion
Signal-to-Noise and Distortion
Spurious-Free Dynamic Range
Analog Input
Input Voltage Range
Leakage Current
SDA/SCL (open-drain output):
Data Coding Format
High-level input voltage
Low-level input voltage
Low-level output voltage
Hysteresis of Schmitt trigger inputs
Note 1:
DD
AMB
...................................................................................7.0V
= -40°C to +85°C, I
2:
3:
4:
5:
ELECTRICAL
CHARACTERISTICS
“Sample time” is the time between conversions once the address byte has been sent to the converter.
Refer to Figure 5-6.
This parameter is periodically sampled and not 100% tested.
R
SDA and SCL = V
t
SCL.
Parameters
ACQ
PU
= Pull-up resistor on SDA and SCL.
and t
SS
CONV
.......... ............. -0.6V to V
SS
........... .........-0.6V to V
2
C Fast Mode Timing: f
are dependent on internal oscillator timing. See Figure 5-5 and Figure 5-6 for relation to
SS
to V
DD
SINAD
SFDR
V
Sym
DNL
THD
V
INL
V
HYST
V
at 400 kHz.
OL
IH
IL
DD
DD
V
0.7 V
+0.6V
+1.0V
SCL
SS
Min
—
—
—
—
—
—
—
—
—
—
-1
-0.3
= 400 kHz (Note 3).
DD
Straight Binary
0.05 V
±0.75
±0.75
±0.5
Typ
-82
72
86
12
—
—
—
—
—
-1
PIN FUNCTION TABLE
V
V
AIN
SDA
SCL
DD
DD
SS
Name
V
0.3 V
DD
Max
0.4
±2
±1
±2
±3
+1
—
—
—
—
—
+0.3
DD
DD
Units
LSB
LSB
LSB
LSB
bits
= 5.0V, V
dB
dB
dB
µA
+2.7V to 5.5V Power Supply
Ground
Analog Input
Serial Data In/Out
Serial Clock In
V
V
V
V
V
No missing codes
V
V
V
2.7V
I
f
2003 Microchip Technology Inc.
OL
SCL
IN
IN
IN
SS
= 3 mA, R
= 0.1V to 4.9V @ 1 kHz
= 0.1V to 4.9V @ 1 kHz
= 0.1V to 4.9V @ 1 kHz
= 400 kHz only
= GND, R
Function
V
Conditions
DD
5.5V
PU
PU
= 1.53 k
= 2 k