M
Features
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Full Differential Inputs
MCP3302: 2 Differential or 4 Single ended Inputs
MCP3304: 4 Differential or 8 Single ended Inputs
±1 LSB max DNL
±1 LSB max INL (MCP3302/04-B)
±2 LSB max INL (MCP3302/04-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
µA
max
450
µA
max active current at 5V
Industrial temp range: -40°C to +85°C
14 and 16-pin PDIP, SOIC and TSSOP packages
MXDEV
TM
Evaluation kit available
MCP3302/04
General Description
The Microchip Technology Inc. MCP3302/04 13-bit A/D
converters feature full differential inputs and low power
consumption in a small package that is ideal for battery
powered systems and remote data acquisition applica-
tions. The MCP3302 is programmable to provide two
differential input pairs or four single ended inputs. The
MCP3304 is programmable and provides four differen-
tial input pairs or eight single ended inputs.
Incorporating a successive approximation architecture
with on-board sample and hold circuitry, these 13-bit
A/D converters are specified to have ±1 LSB Differen-
tial Nonlinearity (DNL); ±1 LSB Integral Nonlinearity
(INL) for B-grade and ±2 LSB for C-grade devices. The
industry-standard SPI™ serial interface enables 13-bit
A/D converter capability to be added to any PICmicro
®
microcontroller.
The MCP3302/04 devices feature low current design
that permits operation with typical standby and active
currents of only 50 nA and 300
µA,
respectively. The
devices operate over a broad voltage range of 2.7V to
5.5V and are 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
µV
and 1.22 mV.
13-Bit Differential Input, Low Power A/D Converter
with SPI™ Serial Interface
Applications
• Remote Sensors
• Battery Operated Systems
• Transducer Interface
Package Types
PDIP, SOIC, TSSOP
CH0
CH1
CH2
CH3
NC
NC
DGND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
DD
V
REF
AGND
CLK
D
OUT
D
IN
CS/SHDN
The MCP3302 is available in 14-pin PDIP, 150 mil
SOIC and TSSOP packages. The MCP3304 is avail-
able in 16-pin PDIP and 150 mil SOIC packages. The
full differential inputs of these devices enable a wide
variety of signals to be used in applications such as
remote data acquisition, portable instrumentation and
battery operated applications.
MCP3302
PDIP, SOIC
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
V
REF
AGND
CLK
D
OUT
D
IN
CS/SHDN
DGND
2002 Microchip Technology Inc.
MCP3304
DS21697B-page 1
MCP3302/04
Functional Block Diagram
V
REF
V
DD
AGND DGND
CH0
CH1
Input
Channel
Mux
CDAC
Comparator
13-Bit SAR
+
CH7*
Sample
& Hold
Circuits
-
Control Logic
Shift
Register
CS/SHDN D
IN
CLK
D
OUT
*
Channels 5-7 available on MCP3304 Only
DS21697B-page 2
2002 Microchip Technology Inc.
MCP3302/04
1.0
ELECTRICAL
CHARACTERISTICS
PIN FUNCTION TABLE
Name
CH0-CH7
DGND
CS/SHDN
D
IN
D
OUT
CLK
AGND
V
REF
V
DD
Analog Inputs
Digital Ground
Chip Select / Shutdown Input
Serial Data In
Serial Data Out
Serial Clock
Analog Ground
Reference Voltage Input
+2.7V to 5.5V Power Supply
Function
Maximum Ratings*
V
DD
........................................................................ 7.0V
All inputs and outputs w.r.t. V
SS
.....-0.3V to V
DD
+0.3V
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
*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.
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
= -40°C to +85°C (Note
7).
Conversion speed (F
SAMPLE
) is 100 ksps with F
CLK
= 21*F
SAMPLE
Parameter
Conversion Rate
Maximum Sampling Frequency
Conversion Time
Acquisition Time
DC Accuracy
Resolution
Integral Nonlinearity
Differential Nonlinearity
Positive Gain Error
Negative Gain Error
Offset Error
Note 1:
2:
3:
4:
5:
6:
7:
8:
INL
DNL
—
—
—
-3
-3
-3
12 data bits + sign
±0.5
±1
±0.5
-0.75
-0.5
+3
±1
±2
±1
+2
+2
+6
bits
LSB
LSB
LSB
LSB
LSB
LSB
MCP3302/04-B
MCP3302/04-C
Monotonic over temperature
F
SAMPLE
T
CONV
T
ACQ
—
—
—
—
13
1.5
100
50
ksps
ksps
CLK
periods
CLK
periods
Note 8
V
DD
= V
REF
= 2.7V, V
CM
=1.35V
Symbol
Min
Typ
Max
Units
Conditions
This specification is established by characterization and not 100% tested.
See characterization graphs that relate converter performance to V
REF
level.
V
IN
= 0.1V to 4.9V @ 1 kHz.
V
DD
=5V
P-P
±500 mV @ 1 kHz, see test circuit Figure 3-3.
Maximum clock frequency specification must be met.
V
REF
= 400 mV, V
IN
= 0.1V to 4.9V @ 1 kHz
TSSOP devices are only specified at 25°C and +85°C.
For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
2002 Microchip Technology Inc.
DS21697B-page 3
MCP3302/04
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
= -40°C to +85°C (Note
7).
Conversion speed (F
SAMPLE
) is 100 ksps with F
CLK
= 21*F
SAMPLE
Parameter
Dynamic Performance
Total Harmonic Distortion
Signal to Noise and Distortion
Spurious Free Dynamic Range
Common Mode Rejection
Channel to Channel Crosstalk
Power Supply Rejection
Reference Input
Voltage Range
Current Drain
Analog Inputs
Full Scale Input Span
Absolute Input Voltage
Leakage Current
Switch Resistance
Sample Capacitor
Digital Input/Output
Data Coding Format
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
Low Level Output Voltage
Input Leakage Current
Output Leakage Current
Pin Capacitance
Note 1:
2:
3:
4:
5:
6:
7:
8:
V
IH
V
IL
V
OH
V
OL
I
LI
I
LO
C
IN
, C
OUT
Binary Two’s Complement
0.7 V
DD
—
4.1
—
-10
-10
—
—
—
—
—
—
—
—
—
0.3 V
DD
—
0.4
10
10
10
V
V
V
V
µA
µA
pF
I
OH
= -1 mA, V
DD
= 4.5V
I
OL
= 1 mA, V
DD
= 4.5V
V
IN
= V
SS
or V
DD
V
OUT
= V
SS
or V
DD
T
AMB
= 25°C, F = 1 MHz,
Note 1
R
S
C
SAMPLE
CH0 - CH7
CH0 - CH7
-V
REF
-0.3
—
—
—
—
—
0.001
1
25
V
REF
V
DD
+ 0.3
±1
—
—
V
V
µA
kΩ
pF
See Figure 6-3
See Figure 6-3
0.4
—
—
—
100
0.001
V
DD
150
3
V
µA
µA
Note 2
CS = V
DD
= 5V
THD
SINAD
SFDR
CMRR
CT
PSR
—
—
—
—
—
—
-91
78
92
79
> -110
74
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
Note 3
Note 3
Note 3
Note 6
Note 6
Note 4
Symbol
Min
Typ
Max
Units
Conditions
This specification is established by characterization and not 100% tested.
See characterization graphs that relate converter performance to V
REF
level.
V
IN
= 0.1V to 4.9V @ 1 kHz.
V
DD
=5V
P-P
±500 mV @ 1 kHz, see test circuit Figure 3-3.
Maximum clock frequency specification must be met.
V
REF
= 400 mV, V
IN
= 0.1V to 4.9V @ 1 kHz
TSSOP devices are only specified at 25°C and +85°C.
For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
DS21697B-page 4
2002 Microchip Technology Inc.
MCP3302/04
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
= -40°C to +85°C (Note
7).
Conversion speed (F
SAMPLE
) is 100 ksps with F
CLK
= 21*F
SAMPLE
Parameter
Timing Specifications:
Clock Frequency
(Note 8)
Clock High Time
Clock Low Time
CS Fall To First Rising CLK Edge
Data In Setup time
Data In Hold Time
CLK Fall To Output Data Valid
CLK Fall To Output Enable
CS Rise To Output Disable
CS Disable Time
D
OUT
Rise Time
D
OUT
Fall Time
Power Requirements:
Operating Voltage
Operating Current
Standby Current
Temperature Ranges:
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistance:
Thermal Resistance, 14L-PDIP
Thermal Resistance, 14L-SOIC
Thermal Resistance, 14L-TSSOP
Thermal Resistance, 16L-PDIP
Thermal Resistance, 16L-SOIC
Note 1:
2:
3:
4:
5:
6:
7:
8:
θ
JA
θ
JA
θ
JA
θ
JA
θ
JA
—
—
—
—
—
70
108
100
70
90
—
—
—
—
—
°C/W
°C/W
°C/W
°C/W
°C/W
T
A
T
A
T
A
-40
-40
-65
—
—
—
+85
+85
+150
°C
°C
°C
V
DD
I
DD
I
DDS
2.7
—
—
—
—
300
200
0.05
5.5
450
—
1
V
µA
µA
V
DD
, V
REF
= 5V, D
OUT
unloaded
V
DD
, V
REF
= 2.7V, D
OUT
unloaded
CS = V
DD
= 5.0V
F
CLK
T
HI
T
LO
T
SUCS
T
SU
T
HD
T
DO
T
EN
T
DIS
T
CSH
T
R
T
F
0.105
0.105
210
210
100
50
—
—
—
—
475
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.1
1.05
—
—
—
—
50
125
200
125
200
100
—
100
100
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
See test circuits, Figure 3-1
Note 1
See test circuits, Figure 3-1
Note 1
V
DD
= 5V, see Figure 3-1
V
DD
= 2.7V, see Figure 3-1
V
DD
= 5V, see Figure 3-1
V
DD
= 2.7V, see Figure 3-1
See test circuits, Figure 3-1
Note 1
V
DD
= 5V, F
SAMPLE
= 100 ksps
V
DD
= 2.7V, F
SAMPLE
= 50 ksps
Note 5
Note 5
Symbol
Min
Typ
Max
Units
Conditions
This specification is established by characterization and not 100% tested.
See characterization graphs that relate converter performance to V
REF
level.
V
IN
= 0.1V to 4.9V @ 1 kHz.
V
DD
=5V
P-P
±500 mV @ 1 kHz, see test circuit Figure 3-3.
Maximum clock frequency specification must be met.
V
REF
= 400 mV, V
IN
= 0.1V to 4.9V @ 1 kHz
TSSOP devices are only specified at 25°C and +85°C.
For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
2002 Microchip Technology Inc.
DS21697B-page 5
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