2002 Microchip Technology Inc.
DS21700B-page 1
M
MCP3301
Features
Full Differential Inputs
1 LSB max DNL
1 LSB max INL (MCP3301-B)
2 LSB max INL (MCP3301-C)
Single supply operation: 2.7V to 5.5V
100 ksps sampling rate with 5V supply voltage
50 ksps sampling rate with 2.7V supply voltage
50 nA typical standby current, 1 A max
450 A max active current at 5V
Industrial temp range: -40C to +85 C
8-pin MSOP, PDIP and SOIC packages
MXDEVTM Evaluation kit available
Applications
Remote Sensors
Battery Operated Systems
Transducer Interface
Package Types
General Description
The Microchip Technology Inc. MCP3301 13-bit A/D
converter features full differential inputs and low power
consumption in a small package that is ideal for battery
powered systems and remote data acquisition
applications.
Incorporating a successive approximation architecture
with on-board sample and hold circuitry, this 13-bit A/
D converter is specified to have 1 LSB Differential
Nonlinearity (DNL) and 1 LSB Integral Nonlinearity
(INL) for B-grade devices and 2 LSB for C-grade
devices. The industry-standard SPITM serial interface
enables 13-bit A/D converter capability to be added to
any PICmicro
microcontroller.
The MCP3301 features a low current design that per-
mits operation with typical standby and active currents
of only 50 nA and 300 A, respectively. The device
operates over a broad voltage range of 2.7V to 5.5V
and is capable of conversion rates of up to 100 ksps.
The reference voltage can be varied from 400 mV to
5V, yielding input-referred resolution between 98 V
and 1.22 mV.
The MCP3301 is available in 8-pin PDIP, 150 mil SOIC
and MSOP packages. The full differential inputs of this
device enable a wide variety of signals to be used in
applications such as remote data acquisition, portable
instrumentation and battery operated applications.
MSOP, PDIP, SOIC
V
DD
CS/SHDN
M
C
P3
301
1
2
3
4
8
7
6
5
CLK
V
REF
IN(+)
IN(-)
V
SS
D
OUT
13-Bit Differential Input, Low Power A/D Converter
with SPITM Serial Interface
2002 Microchip Technology Inc.
DS21700B-page 3
MCP3301
1.0
ELECTRICAL
CHARACTERISTICS
Maximum Ratings*
V
DD
........................................................................ 7.0V
All inputs and outputs w.r.t. V
SS
.......-0.3V to V
DD
+0.3V
Storage temperature .......................... -65C to +150C
Ambient temp. with power applied ..... -65C to +125C
Maximum Junction Temperature ....................... 150C
ESD protection on all pins (HBM)
......................... >
4 kV
*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. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
PIN FUNCTION TABLE
Name
Function
V
REF
Reference Voltage Input
IN(+)
Positive Analog Input
IN(-)
Negative Analog Input
V
SS
Ground
CS/SHDN
Chip Select / Shutdown Input
D
OUT
Serial Data Out
CLK
Serial Clock
V
DD
+2.7V to 5.5V Power Supply
ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 5V, V
SS
= 0V, and V
REF
= 5V. Full differential input
configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with
T
AMB
= -40C to +85C (Note 7). Conversion speed (f
SAMPLE)
is 100 ksps with f
CLK
= 17*f
SAMPLE
Parameter
Symbol
Min
Typ
Max
Units
Conditions
Conversion Rate
Maximum Sampling Frequency
f
SAMPLE
--
--
100
ksps
Note 8
--
--
50
ksps
V
DD
= V
REF
= 2.7V, V
CM
=1.35V
Conversion Time
t
CONV
13
CLK
periods
Acquisition Time
t
ACQ
1.5
CLK
periods
DC Accuracy
Resolution
12 data bits + sign
bits
Integral Nonlinearity
INL
--
--
0.5
1
1
2
LSB
MCP3301-B
MCP3301-C
Differential Nonlinearity
DNL
--
0.5
1
LSB
Monotonic with no missing codes
over temperature
Positive Gain Error
-3
-0.75
+2
LSB
Negative Gain Error
-3
-0.5
+2
LSB
Offset Error
-3
+3
+6
LSB
Dynamic Performance
Total Harmonic Distortion
THD
--
-91
--
dB
Note 3
Signal to Noise and Distortion
SINAD
--
78
--
dB
Note 3
Spurious Free Dynamic Range
SFDR
--
92
--
dB
Note 3
Common-Mode Rejection
CMRR
--
79
--
dB
Note 6
Power Supply Rejection
PSR
--
74
--
dB
Note 4
Note 1: This specification is established by characterization and not 100% tested.
2: See characterization graphs that relate converter performance to V
REF
level.
3: V
IN
= 0.1V to 4.9V @ 1 kHz.
4: V
DD
= 5VDC 500 mV
P
-
P
@ 1 kHz, see test circuit Figure 3-3.
5: Maximum clock frequency specification must be met.
6: V
REF
= 400 mV, V
IN
= 0.1V to 4.9V @ 1 kHz
7: MSOP devices are only specified at 25C and +85C.
8: For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
MCP3301
DS21700B-page 4
2002 Microchip Technology Inc.
Reference Input
Voltage Range
0.4
--
V
DD
V
Note 2
Current Drain
--
--
100
0.001
150
3
A
A
CS = V
DD
= 5V
Analog Inputs
Full-Scale Input Span
IN(+)-IN(-)
-V
REF
--
V
REF
V
Absolute Input Voltage
IN(+)
-0.3
--
V
DD
+ 0.3
V
IN(-)
-0.3
--
V
DD
+ 0.3
V
Leakage Current
--
0.001
1
A
Switch Resistance
R
S
--
1
--
k
See Figure 6-3
Sample Capacitor
C
SAMPLE
--
25
--
pF
See Figure 6-3
Digital Input/Output
Data Coding Format
Binary Two's Complement
High Level Input Voltage
V
IH
0.7 V
DD
--
--
V
Low Level Input Voltage
V
IL
--
--
0.3 V
DD
V
High Level Output Voltage
V
OH
4.1
--
--
V
I
OH
= -1 mA, V
DD
= 4.5V
Low Level Output Voltage
V
OL
--
--
0.4
V
I
OL
= 1 mA, V
DD
= 4.5V
Input Leakage Current
I
LI
-10
--
10
A
V
IN
= V
SS
or V
DD
Output Leakage Current
I
LO
-10
--
10
A
V
OUT
= V
SS
or V
DD
Pin Capacitance
C
IN
, C
OUT
--
--
10
pF
T
AMB
= 25C, f = 1 MHz, Note 1
Timing Specifications
Clock Frequency (Note 8)
f
CLK
0.085
0.085
--
--
1.7
0.85
MHz
MHz
V
DD
= 5V, f
SAMPLE
= 100 ksps
V
DD
= 2.7V, f
SAMPLE
= 50 ksps
Clock High Time
t
HI
275
--
--
ns
Note 5
Clock Low Time
t
LO
275
--
--
ns
Note 5
CS Fall To First Rising CLK Edge
t
SUCS
100
--
--
ns
CLK Fall To Output Data Valid
t
DO
--
--
125
200
ns
ns
V
DD
= 5V, see Figure 3-1
V
DD
= 2.7V, see Figure 3-1
CLK Fall To Output Enable
t
EN
--
--
125
200
ns
ns
V
DD
= 5V, see Figure 3-1
V
DD
= 2.7V, see Figure 3-1
CS Rise To Output Disable
t
DIS
--
--
100
ns
See test circuits, Figure 3-1
(Note 1)
CS Disable Time
t
CSH
580
--
--
ns
D
OUT
Rise Time
t
R
--
--
100
ns
See test circuits, Figure 3-1; Note 1
D
OUT
Fall Time
t
F
--
--
100
ns
See test circuits, Figure 3-1; Note 1
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 5V, V
SS
= 0V, and V
REF
= 5V. Full differential input
configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with
T
AMB
= -40C to +85C (Note 7). Conversion speed (f
SAMPLE)
is 100 ksps with f
CLK
= 17*f
SAMPLE
Parameter
Symbol
Min
Typ
Max
Units
Conditions
Note 1: This specification is established by characterization and not 100% tested.
2: See characterization graphs that relate converter performance to V
REF
level.
3: V
IN
= 0.1V to 4.9V @ 1 kHz.
4: V
DD
= 5VDC 500 mV
P
-
P
@ 1 kHz, see test circuit Figure 3-3.
5: Maximum clock frequency specification must be met.
6: V
REF
= 400 mV, V
IN
= 0.1V to 4.9V @ 1 kHz
7: MSOP devices are only specified at 25C and +85C.
8: For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
2002 Microchip Technology Inc.
DS21700B-page 5
MCP3301
.
FIGURE 1-1:
Timing Parameters
Power Requirements
Operating Voltage
V
DD
2.7
--
5.5
V
Operating Current
I
DD
--
--
300
200
450
--
A
V
DD
,
V
REF
= 5V, D
OUT
unloaded
V
DD
, V
REF
= 2.7V, D
OUT
unloaded
Standby Current
I
DDS
--
0.05
1
A
CS = V
DD
= 5.0V
Temperature Ranges
Specified Temperature Range
T
A
-40
--
+85
C
Operating Temperature Range
T
A
-40
--
+85
C
Storage Temperature Range
T
A
-65
--
+150
C
Thermal Package Resistance
Thermal Resistance, 8L-MSOP
JA
--
206
--
C/W
Thermal Resistance, 8L-PDIP
JA
--
85
--
C/W
Thermal Resistance, 8L-SOIC
JA
--
163
--
C/W
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 5V, V
SS
= 0V, and V
REF
= 5V. Full differential input
configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with
T
AMB
= -40C to +85C (Note 7). Conversion speed (f
SAMPLE)
is 100 ksps with f
CLK
= 17*f
SAMPLE
Parameter
Symbol
Min
Typ
Max
Units
Conditions
Note 1: This specification is established by characterization and not 100% tested.
2: See characterization graphs that relate converter performance to V
REF
level.
3: V
IN
= 0.1V to 4.9V @ 1 kHz.
4: V
DD
= 5VDC 500 mV
P
-
P
@ 1 kHz, see test circuit Figure 3-3.
5: Maximum clock frequency specification must be met.
6: V
REF
= 400 mV, V
IN
= 0.1V to 4.9V @ 1 kHz
7: MSOP devices are only specified at 25C and +85C.
8: For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
CS
CLK
t
SUCS
t
CSH
t
HI
t
LO
D
OUT
t
EN
t
DO
t
R
t
F
LSB
Sign Bit
t
DIS
Null Bit
HI-Z
HI-Z
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