MCP3422A1-E/MS Microchip Technology, MCP3422A1-E/MS Datasheet - Page 5

• Manufacturer Part Number: MCP3422A1-E/MS
• Description: 18-Bit, Multi-Channel Delta-Sigma ADC w/ I2C Interface and On-Board Reference ; 8L MSOP 3x3mm
• Manufacturer: Microchip Technology

1.0
Absolute Maximum Ratings†
V
All inputs and outputs ............. ..........V
Differential Input Voltage ...................................... |V
Output Short Circuit Current ................................ Continuous
Current at Input Pins ....................................................±2 mA
Current at Output and Supply Pins ............................±10 mA
Storage Temperature ....................................-65°C to +150°C
Ambient Temp. with power applied ...............-55°C to +125°C
ESD protection on all pins ................ ≥ 6 kV HBM, ≥ 300V MM
Maximum Junction Temperature (T
ELECTRICAL CHARACTERISTICS
© 2008 Microchip Technology Inc.
Electrical Specifications: Unless otherwise specified, all parameters apply for T
CHn+ = CHn- = V
Analog Inputs
Differential Full-Scale Input
Voltage Range
Maximum Input Voltage Range
Differential Input Impedance
Common Mode input
Impedance
System Performance
Resolution and No Missing
Codes
(Effective Number of Bits)
(Note 3)
Data Rate
(Note 4)
Output Noise
Integral Non-Linearity
Internal Reference Voltage
Gain Error (Note 6)
Note 1:
DD
...................................................................................7.0V
2:
3:
4:
5:
6:
7:
8:
9:
10: No voltage is applied at address pin (left “floating”).
ELECTRICAL
CHARACTERISTICS
Parameters
Any input voltage below or greater than this voltage causes leakage current through the ESD diodes at the input pins.
This parameter is ensured by characterization and not 100% tested.
This input impedance is due to 3.2 pF internal input sampling capacitor.
This parameter is ensured by design and not 100% tested.
The total conversion speed includes auto-calibration of offset and gain.
INL is the difference between the endpoints line and the measured code at the center of the quantization band.
Includes all errors from on-board PGA and V
This parameter is ensured by characterization and not 100% tested.
MCP3423 and MCP3424 only.
Addr_Float voltage is applied at address pin.
REF
/2, V
INCOM
= V
J
). .........................+150°C
Z
Z
REF
V
Sym
FSR
IND
INC
DR
INL
SS
REF
/2. All ppm units use 2*V
–0.4V to V
(f)
(f)
V
SS
2.75
176
Min
—
—
—
12
14
16
18
44
11
—
—
—
—
DD
DD
-0.3
+0.4V
- V
REF
SS
±2.048/PGA
|
2.25/PGA
.
2.048
3.75
0.05
240
Typ
1.5
60
15
10
—
25
—
—
—
—
REF
as differential full-scale range.
†Notice: Stresses above those listed under “Maximum Rat-
ings” 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 listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability
V
DD
20.5
0.35
Max
328
5.1
82
35
—
—
—
—
—
—
—
—
—
+0.3
A
= -40°C to +85°C, V
ppm of
µV
Units
FSR
SPS
SPS
SPS
SPS
MΩ
MΩ
Bits
Bits
Bits
Bits
%
V
V
RMS
V
MCP3422/3/4
.
V
(Note 1)
During normal mode operation
(Note 2)
PGA = 1, 2, 4, 8
DR = 240 SPS
DR = 60 SPS
DR = 15 SPS
DR = 3.75 SPS
12 bits mode
14 bits mode
16 bits mode
18 bits mode
T
PGA = 1, V
DR = 3.75 SPS, FSR =
Full-Scale Range (Note 5)
PGA = 1, DR = 3.75 SPS
A
IN
= +25°C, DR = 3.75 SPS,
= [CHn+ - CHn-]
DD
= +5.0V, V
IN
+ = V
Conditions
DS22088B-page 5
SS
IN
- = GND
= 0V,