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MCP3302 Datasheet, PDF (4/40 Pages) Microchip Technology – 13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface
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MCP3302/04
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VSS = 0V, and VREF = 5V. Full differential
input configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with
TAMB = -40°C to +85°C (Note 7). Conversion speed (FSAMPLE) is 100 ksps with FCLK = 21*FSAMPLE
Parameter
Symbol
Min Typ
Max
Units
Conditions
Dynamic Performance
Total Harmonic Distortion
THD
—
-91
—
dB
Signal to Noise and Distortion
SINAD
—
78
—
dB
Spurious Free Dynamic Range
SFDR
—
92
—
dB
Common Mode Rejection
CMRR
—
79
—
dB
Channel to Channel Crosstalk
CT
— > -110
—
dB
Power Supply Rejection
PSR
—
74
—
dB
Reference Input
Voltage Range
Current Drain
0.4
—
VDD
V
—
100
150
µA
— 0.001
3
µA
Analog Inputs
Full Scale Input Span
Absolute Input Voltage
Leakage Current
CH0 - CH7 -VREF —
VREF
V
CH0 - CH7 -0.3
— VDD + 0.3
V
— 0.001
±1
µA
Switch Resistance
Sample Capacitor
Digital Input/Output
RS
—
1
—
kΩ
CSAMPLE
—
25
—
pF
Data Coding Format
Binary Two’s Complement
High Level Input Voltage
VIH
0.7 VDD —
—
V
Low Level Input Voltage
VIL
—
—
0.3 VDD
V
High Level Output Voltage
VOH
4.1
—
—
V
Low Level Output Voltage
VOL
—
—
0.4
V
Input Leakage Current
ILI
-10
—
10
µA
Output Leakage Current
ILO
-10
—
10
µA
Pin Capacitance
CIN, COUT
—
—
10
pF
Note 1: This specification is established by characterization and not 100% tested.
2: See characterization graphs that relate converter performance to VREF level.
3: VIN = 0.1V to 4.9V @ 1 kHz.
4: VDD =5VP-P ±500 mV @ 1 kHz, see test circuit Figure 3-3.
5: Maximum clock frequency specification must be met.
6: VREF = 400 mV, VIN = 0.1V to 4.9V @ 1 kHz
7: TSSOP devices are only specified at 25°C and +85°C.
8: For slow sample rates, see Section 6.2.1 for limitations on clock frequency.
Note 3
Note 3
Note 3
Note 6
Note 6
Note 4
Note 2
CS = VDD = 5V
See Figure 6-3
See Figure 6-3
IOH = -1 mA, VDD = 4.5V
IOL = 1 mA, VDD = 4.5V
VIN = VSS or VDD
VOUT = VSS or VDD
TAMB = 25°C, F = 1 MHz, Note 1
DS21697B-page 4
 2002 Microchip Technology Inc.
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