Datasheet

MCP3021
DS21805B-page 2  2003-2013 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
V
DD
...................................................................................7.0V
Analog input pin w.r.t. V
SS
.......... ............. -0.6V to V
DD
+0.6V
SDA and SCL pins w.r.t. V
SS
........... .........-0.6V to V
DD
+1.0V
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) ................................. 4kV
† 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.
PIN FUNCTION TABLE
Name Function
V
DD
+2.7V to 5.5V Power Supply
V
SS
Ground
AIN Analog Input
SDA Serial Data In/Out
SCL Serial Clock In
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 5.0V, V
SS
= GND, R
PU
= 2 k
T
A
= -40°C to +85°C, I
2
C Fast Mode Timing: f
SCL
= 400 kHz (Note 3).
Parameters Sym Min Typ Max Units Conditions
DC Accuracy
Resolution 10 bits
Integral Nonlinearity INL — ±0.25 ±1 LSB
Differential Nonlinearity DNL — ±0.25 ±1 LSB No missing codes
Offset Error — ±0.75 ±3 LSB
Gain Error — -1 ±3 LSB
Dynamic Performance
Total Harmonic Distortion THD — -70 — dB V
IN
= 0.1V to 4.9V @ 1 kHz
Signal to Noise and Distortion SINAD — 60 — dB V
IN
= 0.1V to 4.9V @ 1 kHz
Spurious Free Dynamic Range SFDR — 74 — dB V
IN
= 0.1V to 4.9V @ 1 kHz
Analog Input
Input Voltage Range V
SS
-0.3 — V
DD
+0.3 V 2.7V  V
DD
 5.5V
Leakage Current -1 — +1 µA
SDA/SCL (open-drain output)
Data Coding Format Straight Binary
High-level input voltage V
IH
0.7 V
DD
——V
Low-level input voltage V
IL
——0.3 V
DD
V
Low-level output voltage V
OL
——0.4VI
OL
= 3 mA, R
PU
= 1.53 k
Hysteresis of Schmitt trigger inputs V
HYST
— 0.05V
DD
—Vf
SCL
= 400 kHz only
Note 1: Sample time is the time between conversions after the address byte has been sent to the converter. Refer
to Figure 5-6.
2: This parameter is periodically sampled and not 100% tested.
3: R
PU
= Pull-up resistor on SDA and SCL.
4: SDA and SCL = V
SS
to V
DD
at 400 kHz.
5: t
ACQ
and t
CONV
are dependent on internal oscillator timing. See Figure 5-5 and Figure 5-6 for relation to
SCL.