Datasheet
Table Of Contents
- MCP3905A/05L/06A
- Features
- Description
- Package Type
- Functional Block Diagram
- Notes:
- 1.0 Electrical Characteristics
- 2.0 Typical Performance Curves
- FIGURE 2-1: Measurement Error, Gain = 8 PF = 1.
- FIGURE 2-2: Measurement Error, Gain = 16, PF = 1.
- FIGURE 2-3: Measurement Error, Gain = 32, PF = 1.
- FIGURE 2-4: Measurement Error, Gain = 8, PF = 0.5.
- FIGURE 2-5: Measurement Error, Gain = 16, PF = 0.5.
- FIGURE 2-6: Measurement Error, Gain =32, PF = 0.5.
- FIGURE 2-7: Measurement Error, Gain = 1, PF = 1.
- FIGURE 2-8: Measurement Error, Gain = 2, PF = 1.
- FIGURE 2-9: Measurement Error, Gain = 1, PF = + 0.5.
- FIGURE 2-10: Measurement Error, Gain = 2, PF = + 0.5.
- FIGURE 2-11: Measurement Error, Temperature = +125°C, Gain = 1.
- FIGURE 2-12: Measurement Error, Temperature = +125°C, Gain = 2.
- FIGURE 2-13: Measurement Error, Temperature = +125°C, Gain = 8.
- FIGURE 2-14: Measurement Error, Temperature = +125°C, Gain = 16.
- FIGURE 2-15: Measurement Error vs. Input Frequency.
- FIGURE 2-16: Channel 0 Offset Error (DC Mode, HPF off), G = 1.
- FIGURE 2-17: Channel 0 Offset Error (DC Mode, HPF off), G = 8.
- FIGURE 2-18: Channel 0 Offset Error (DC Mode, HPF Off), G = 16.
- FIGURE 2-19: Measurement Error vs. VDD (G = 16).
- FIGURE 2-20: Measurement Error vs. VDD, G = 16, External VREF.
- FIGURE 2-21: Measurement Error w/ External VREF, (G = 1).
- FIGURE 2-22: Measurement Error w/ External VREF (G = 8).
- FIGURE 2-23: Measurement Error w/ External VREF (G = 16).
- 3.0 Pin Descriptions
- TABLE 3-1: Pin Function Table
- 3.1 Digital VDD (DVDD)
- 3.2 High-Pass Filter Input Logic Pin (HPF)
- 3.3 Analog VDD (AVDD)
- 3.4 Current Channel (CH0-, CH0+)
- 3.5 Voltage Channel (CH1-,CH1+)
- 3.6 Master Clear (MCLR)
- 3.7 Reference (REFIN/OUT)
- 3.8 Analog Ground (AGND)
- 3.9 Frequency Control Logic Pins (F2, F1, F0)
- 3.10 Gain Control Logic Pins (G1, G0)
- 3.11 Oscillator (OSC1, OSC2)
- 3.12 Negative Power Output Logic Pin (NEG)
- 3.13 Ground Connection (DGND)
- 3.14 High-Frequency Output (HFOUT)
- 3.15 Frequency Output (FOUT0, FOUT1)
- 4.0 Device Overview
- 5.0 Applications Information
- 6.0 Packaging Information
- Trademarks
- Worldwide Sales and Service
MCP3905A/05L/06A
DS22011B-page 10 © 2006-2011 Microchip Technology Inc.
Note: Unless otherwise specified, DV
DD
, AV
DD
= 5V; A
GND
, D
GND
= 0V; V
REF
= Internal, HPF = 1 (AC mode),
MCLK = 3.58 MHz.
FIGURE 2-15: Measurement Error vs.
Input Frequency.
FIGURE 2-16: Channel 0 Offset Error
(DC Mode, HPF off), G = 1.
FIGURE 2-17: Channel 0 Offset Error
(DC Mode, HPF off), G = 8.
FIGURE 2-18: Channel 0 Offset Error
(DC Mode, HPF Off), G = 16.
FIGURE 2-19: Measurement Error vs. V
DD
(G = 16).
FIGURE 2-20: Measurement Error vs. V
DD
,
G = 16, External V
REF
.
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
40 50 60 70 80
Frequency (Hz)
Measurement Error (%)
PF = 0.5
PF = 1
0
500
1000
1500
2000
2500
3000
-4.00E-3
-3.95E-3
-3.90E-3
-3.85E-3
-3.80E-3
-3.75E-3
-3.70E-3
-3.65E-3
-3.60E-3
-3.55E-3
-3.50E-3
-3.45E-3
Channel 0 Offset (V)
Occurance
16384 Samples
Mean = -3.76 mV
Std. Dev = 110.4 µV
0
500
1000
1500
2000
2500
3000
-499.6E-6
-494.1E-6
-488.6E-6
-483.1E-6
-477.6E-6
-472.6E-6
-467.1E-6
-461.6E-6
-456.1E-6
-450.6E-6
-445.6E-6
-440.1E-6
-434.6E-6
Channel 0 Offset (V)
Occurance
16384 Samples
Mean = -470.2 µV
Std. Dev = 13.8 µV
0
500
1000
1500
2000
2500
-251.5E-6
-249.5E-6
-248.5E-6
-246.5E-6
-243.5E-6
-240.5E-6
-237.5E-6
-234.5E-6
-231.5E-6
-229.5E-6
-226.5E-6
-223.5E-6
-220.5E-6
-217.5E-6
Channel 0 Offset (V)
Occurance
16384 Samples
Mean = - 234.7 µV
Std. dev = - 6.91 µV
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
0.0001 0.0010 0.0100 0.1000 1.0000
CH0 Vp-p Amplitude (V)
Measurement Error
V
DD
=4.75V
V
DD
=5.0V
V
DD
=4.5V
V
DD
=5.25V
V
DD
=5.5V
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.0001 0.0010 0.0100 0.1000 1.0000
CH0 Vp-p Amplitude (V)
Measurement Error
V
DD
=4.5V
V
DD
=4.75V
V
DD
=5.0V
V
DD
=5.25V
V
DD
=5.5V