MCP3208 Microchip Technology Inc., MCP3208 Datasheet
MCP3208
Available stocks
Related parts for MCP3208
MCP3208 Summary of contents
Page 1
... The MCP3204 is offered in 14-pin PDIP, 150 mil SOIC and TSSOP packages. The MCP3208 is offered in 16-pin PDIP and SOIC packages. Functional Block Diagram CH0 CH1 Channel CH7* * Note: Channels 5-7 available on MCP3208 Only Technology Inc. MCP3204/3208 ...
Page 2
... LSB — -82 — — 72 — — 86 — 0.25 — Note 2 DD — 100 150 µA — 0.001 3.0 µ levels. REF Function = 0V 5V, SS REF Conditions = REF = V = 2.7V REF = 0.1V to 4.9V@1 kHz = 0.1V to 4.9V@1 kHz = 0.1V to 4.9V@1 kHz = 5V DD © 2007 Microchip Technology Inc. ...
Page 3
... See graphs that relate linearity performance Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity performance, particularly at elevated temperatures. See Section 6.2, “Maintaining Minimum Clock Speed”, for more information. © 2007 Microchip Technology Inc. = 20*f CLK SAMPLE ...
Page 4
... REF Null Bit MSB OUT = 5V 0V 5V, SS REF Conditions t CSH DIS LSB © 2007 Microchip Technology Inc. ...
Page 5
... Voltage Waveforms for OUT Voltage Waveforms for t DO CLK OUT FIGURE 1-2: Load Circuit for t © 2007 Microchip Technology Inc. Test Point D OUT Voltage Waveforms for CLK D OUT Voltage Waveforms for OUT ...
Page 6
... REF Positive INL Negative INL Sample Rate (ksps) Integral Nonlinearity (INL) = 2.7V). DD Positive INL Negative INL 0.5 1.0 1.5 2.0 2.5 3.0 VREF (V) Integral Nonlinearity (INL) = 2.7V). = 2.7 V REF = 50 ksps 1024 1536 2048 2560 3072 3584 4096 Digital Code Integral Nonlinearity (INL) = 2.7V). DD © 2007 Microchip Technology Inc. ...
Page 7
... Sample Rate (ksps) FIGURE 2-8: Differential Nonlinearity (DNL) vs. Sample Rate. 3.0 2.0 1.0 Positive DNL 0.0 Negative DNL -1.0 -2.0 -3 VREF (V) FIGURE 2-9: Differential Nonlinearity (DNL) vs REF © 2007 Microchip Technology Inc 100 ksps, f REF SS SAMPLE 1 0.8 F SAMPLE 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 -50 75 100 FIGURE 2-10: vs ...
Page 8
... Digital Code Differential Nonlinearity = DD = 2.7 V REF = 50 ksps Positive DNL Negative DNL - 100 Temperature (°C) Differential Nonlinearity = 2.7V REF F = 100 ksps SAMPLE 2.7V DD REF ksps SAMPLE (V) REF Offset Error vs REF © 2007 Microchip Technology Inc. ...
Page 9
... 2.7V DD REF - ksps SAMPLE -50 -60 -70 - -90 F SAMPLE -100 1 10 Input Frequency (kHz) FIGURE 2-21: Total Harmonic Distortion (THD) vs. Input Frequency. © 2007 Microchip Technology Inc 5V 0V 100 ksps, f REF SS SAMPLE 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 75 100 FIGURE 2-22: Temperature. 100 = 5 V REF ...
Page 10
... SAMPLE 10 100 Input Frequency (kHz) Effective Number of Bits 10 100 1000 10000 Ripple Frequency (kHz) Power Supply Rejection 2 REF ksps SAMPLE F = 998.76 Hz INPUT 4096 points 5000 10000 15000 20000 25000 Frequency (Hz) Frequency Spectrum of = 2.7V). DD © 2007 Microchip Technology Inc. ...
Page 11
... 2 REF 150 MHz CLK 100 50 0 -50 - Temperature (°C) FIGURE 2-33: I vs. Temperature. DD © 2007 Microchip Technology Inc 5V 0V 100 ksps, f REF SS SAMPLE 100 REF 90 All points REF ...
Page 12
... FIGURE 2-38: I vs. Temperature. DDS DS21298D-page 5V 0V 100 ksps, f REF SS SAMPLE 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 5.0 5.5 6.0 -50 FIGURE 2-39: Current vs. Temperature. 75 100 = 20 25°C. CLK SAMPLE REF MHz CLK - 100 Temperature (°C) Analog Input Leakage © 2007 Microchip Technology Inc. ...
Page 13
... The MCP3204 can be configured to provide two pseudo-differential input pairs or four single-ended inputs, while the MCP3208 can be configured to provide four pseudo-differential input pairs or eight single-ended inputs. Configuration is done as part of the serial command before each con- version begins ...
Page 14
... SS I LEAKAGE V = 0.6V T ± Leakage Current At The Pin I leakage Due To Various Junctions SS = Sampling switch = Sampling switch resistor Sample/hold capacitance C sample 10000 × 4096 V IN -------------------------- - = V REF = reference voltage kΩ SAMPLE = DAC capacitance = © 2007 Microchip Technology Inc. ...
Page 15
... D1 and D2) are used to select the input channel configuration. Table 5-1 and Table 5-2 show the configuration bits for the MCP3204 and MCP3208, respectively. The device will begin to sample the ana- log input on the fourth rising edge of the clock after the start bit has been received ...
Page 16
... During this time, the bias circuit and the comparator power down while the reference input becomes a DATA high impedance node, leaving the CLK running to clock out LSB first data or zeroes. FIGURE 5-2: Communication with MCP3204 or MCP3208 in LSB First Format. DS21298D-page 16 t CYC Don’ ...
Page 17
... As with mode 0,0, the A/D converter outputs data on the falling edge of the clock and the MCU latches data from the A/D converter in on the rising edge of the clock. © 2007 Microchip Technology Inc. MCP3204/3208 DS21298D-page 17 ...
Page 18
... Data stored into MCU receive register after transmission of last 8 bits Don’t Care Data stored into MCU receive register after transmission of last 8 bits © 2007 Microchip Technology Inc. ...
Page 19
... C FIGURE 6-3: The MCP601 Operational Amplifier is used to implement a second order anti-aliasing filter for the signal being converted by the MCP3204. © 2007 Microchip Technology Inc. 6.3 Buffering/Filtering the Analog Inputs If the signal source for the A/D converter is not a low impedance source, it will have to be buffered or inaccu- rate conversion results may occur (see Figure 4-2) ...
Page 20
... Register -Control Logic Device 4 FIGURE 6-5: Digital Ground Pins. on the board ground plane MCP3204/08 Analog Side -Sample Cap -Capacitor Array -Comparator Substrate 5 - 10Ω DGND AGND 0.1 µF Analog Ground Plane Separation of Analog and © 2007 Microchip Technology Inc. ...
Page 21
... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2007 Microchip Technology Inc. MCP3204/3208 Example: e MCP3204-B ...
Page 22
... MCP3204/3208 Package Marking Information (Continued) 16-Lead PDIP (300 mil) (MCP3304) XXXXXXXXXXXXXX XXXXXXXXXXXXXX YYWWNNN 16-Lead SOIC (150 mil) (MCP3304) XXXXXXXXXXXXX XXXXXXXXXXXXX YYWWNNN DS21298D-page 22 Example: MCP3208 I/P 0723NNN Example: e MCP3208-B 3 XXXXXXXXXX IYWWNNN © 2007 Microchip Technology Inc. ...
Page 23
... Significant Characteristic. 3. Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" per side. 4. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. © 2007 Microchip Technology Inc ...
Page 24
... BSC A – A2 1.25 A1 0.10 E 6.00 BSC E1 3.90 BSC D 8.65 BSC h 0.25 L 0.40 L1 1.04 REF φ 0° c 0.17 b 0.31 α 5° β 5° h α c β MAX 14 – 1.75 – – – 0.25 – 0.50 – 1.27 – 8° – 0.25 – 0.51 – 15° – 15° Microchip Technology Drawing C04-065B © 2007 Microchip Technology Inc. ...
Page 25
... Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15 mm per side. 3. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. © 2007 Microchip Technology Inc. MCP3204/3208 E E1 ...
Page 26
... D .735 L .115 c .008 b1 .045 b .014 eB – NOM MAX 16 – .210 .130 .195 – – .310 .325 .250 .280 .755 .775 .130 .150 .010 .015 .060 .070 .018 .022 – .430 Microchip Technology Drawing C04-017B © 2007 Microchip Technology Inc. ...
Page 27
... Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15 mm per side. 4. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. © 2007 Microchip Technology Inc α ...
Page 28
... MCP3204/3208 NOTES: DS21298D-page 28 © 2007 Microchip Technology Inc. ...
Page 29
... APPENDIX A: REVISION HISTORY Revision D (January 2007) This revision includes updates to the packaging dia- grams. © 2007 Microchip Technology Inc. MCP3204/3208 DS21298D-page 29 ...
Page 30
... MCP3204/3208 NOTES: DS21298D-page 30 © 2007 Microchip Technology Inc. ...
Page 31
... Temperature Range Device: MCP3204: 4-Channel 12-Bit Serial A/D Converter MCP3204T: 4-Channel 12-Bit Serial A/D Converter (Tape and Reel) MCP3208: 8-Channel 12-Bit Serial A/D Converter MCP3208T: 8-Channel 12-Bit Serial A/D Converter (Tape and Reel) Grade ±1 LSB INL C = ±2 LSB INL Temperature Range -40°C to +85°C ...
Page 32
... MCP3204/3208 NOTES: DS21298D-page 32 © 2007 Microchip Technology Inc. ...
Page 33
... Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2007 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...
Page 34
... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris ...