MC3302-BI/P MICROCHIP [Microchip Technology], MC3302-BI/P Datasheet
![no-image](/images/no-image-200.jpg)
MC3302-BI/P
Related parts for MC3302-BI/P
MC3302-BI/P Summary of contents
Page 1
M 13-Bit Differential Input, Low Power A/D Converter with SPI™ Serial Interface Features • Full Differential Inputs • MCP3302: 2 Differential or 4 Single ended Inputs • MCP3304: 4 Differential or 8 Single ended Inputs • ±1 LSB max DNL ...
Page 2
MCP3302/04 Functional Block Diagram V V REF CH0 CH1 Input Channel Mux CH7* CDAC Comparator - Sample & Hold Circuits + Control Logic CS/SHDN D CLK IN * Channels 5-7 available on MCP3304 Only DS21697B-page 2 AGND DGND DD 13-Bit ...
Page 3
ELECTRICAL CHARACTERISTICS Maximum Ratings* V ........................................................................ 7.0V DD All inputs and outputs w.r.t. V .....-0. Storage temperature .......................... -65°C to +150°C Ambient temp. with power applied ..... -65°C to +125°C Maximum Junction Temperature ....................... 150°C ESD ...
Page 4
MCP3302/04 ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Unless otherwise noted, all parameters apply at V input configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with T = -40°C to +85°C (Note 7). Conversion speed ...
Page 5
ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Unless otherwise noted, all parameters apply at V input configuration (Figure 3-4) with fixed common mode voltage of 2.5V. All parameters apply over temperature with T = -40°C to +85°C (Note 7). Conversion speed (F ...
Page 6
MCP3302/ SUCS CLK MSB OUT FIGURE 1-1: Timing Parameters DS21697B-page Null Bit Sign BIT T CSH T T ...
Page 7
TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or ...
Page 8
MCP3302/04 Note: Unless otherwise indicated 100 ksps, F SAMPLE CLK 1 0.8 0.6 Positive INL 0.4 0.2 0 -0.2 -0.4 Negative INL -0.6 -0.8 -1 -50 - Temperature(°C) FIGURE 2-7: Integral Nonlinearity (INL) ...
Page 9
Note: Unless otherwise indicated 100 ksps, F SAMPLE CLK 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -4096 -3072 -2048 -1024 0 1024 2048 Code FIGURE 2-13: Differential Nonlinearity (DNL) vs. Code (Representative Part). ...
Page 10
MCP3302/04 Note: Unless otherwise indicated 100 ksps, F SAMPLE CLK SAMPLE -0.6 -0.8 -1 -1.2 -1 =2.7V DD REF ksps SAMPLE -1.6 -1.8 -50 0 ...
Page 11
Note: Unless otherwise indicated 100 ksps, F SAMPLE CLK =2. ksps F SAMPLE SAMPLE (V) REF FIGURE ...
Page 12
MCP3302/04 Note: Unless otherwise indicated 100 ksps, F SAMPLE CLK 450 400 350 300 250 200 150 100 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-31 ...
Page 13
Note: Unless otherwise indicated 100 ksps, F SAMPLE CLK 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-37 DDS DD 100 10 ...
Page 14
MCP3302/04 3.0 TEST CIRCUITS 1. Test Point D OUT C = 100 pF L FIGURE 3-1: Load Circuit for T Test Point DIS OUT T 100 pF T DIS ...
Page 15
PIN DESCRIPTIONS The descriptions of the pins are listed in Table 4-1. TABLE 4-1: PIN FUNCTION TABLE Name Function CH0-CH7 Analog Inputs DGND Digital Ground CS/SHDN Chip Select / Shutdown Input D Serial Data Serial Data ...
Page 16
MCP3302/04 5.0 DEFINITION OF TERMS Bipolar Operation - This applies to either a differential or single ended input configuration, where both positive and negative codes are output from the A/D converter. Full bipolar range includes all 8192 codes. For bipolar ...
Page 17
APPLICATIONS INFORMATION 6.1 Conversion Description The MCP3302/04 A/D converters employ a conven- tional SAR architecture. With this architecture, the potential between the IN+ and IN- inputs are simulta- neously sampled and stored with the internal sample circuits for 1.5 ...
Page 18
MCP3302/04 V CHx PIN Legend VA = signal source = source impedance R SS CHx = input channel pad = input pin capacitance C PIN = threshold voltage leakage current ...
Page 19
F MCP6021 IN MCP330X IN IN OUT IN MCP1525 1 F FIGURE 6-5: Adding an amplifier allows for gain and also buffers the input from ...
Page 20
MCP3302/04 6.5 Buffering/Filtering the Analog Inputs Inaccurate conversion results may occur if the signal source for the A/D converter is not a low impedance source. Buffering the input will overcome the imped- ance issue also recommended that an ...
Page 21
Utilizing the Digital and Analog Ground Pins The MCP3302/04 devices provide both digital and ana- log ground connections to provide another means of noise reduction. As shown in Figure 6-11, the analog and digital circuitry are separated internal to ...
Page 22
MCP3302/04 7.0 SERIAL COMMUNICATIONS 7.1 Output Code Format The output code format is a binary two’s complement scheme, with a leading sign bit that indicates the sign of the output. If the IN+ input is higher than the IN- input, ...
Page 23
Communicating with the MCP3302 and MCP3304 Communication with the MCP3302/04 devices is done using a standard SPI-compatible serial interface. Initi- ating communication with either device is done by bringing the CS line low (see Figure 7-2). If the device ...
Page 24
MCP3302/ SUCS CLK SGL Start D DIFF IN HI-Z D OUT T ACQ * After completing the data transfer, if further clocks are applied with CS low, the A/D Converter will output LSB first data, ...
Page 25
Using the MCP3302/04 with Microcontroller (MCU) SPI Ports With most microcontroller SPI ports required to send groups of eight bits also required that the microcontroller SPI port be configured to clock out data on the ...
Page 26
MCP3302/04 CS MCU latches data from A/D Converter on rising edges of SCLK SCLK Data is clocked out of A/D Converter on falling edges SGL/ Start D DIFF IN HI-Z D OUT Start Bit ...
Page 27
PACKAGING INFORMATION 8.1 Package Marking Information 14-Lead PDIP (300 mil) XXXXXXXXXXXXXX XXXXXXXXXXXXXX YYWWNNN 14-Lead SOIC (150 mil) XXXXXXXXXXX XXXXXXXXXXX YYWWNNN 14-Lead TSSOP (4.4mm) † XXXXXXXX YYWW NNN †Please contact Microchip Factory for B-Grade TSSOP devices Legend: XX...X Customer specific ...
Page 28
MCP3302/04 Package Marking Information (Continued) 16-Lead PDIP (300 mil) (MCP3304) XXXXXXXXXXXXXX XXXXXXXXXXXXXX YYWWNNN 16-Lead SOIC (150 mil) (MCP3304) XXXXXXXXXXXXX XXXXXXXXXXXXX YYWWNNN Legend: XX...X Customer specific information* YY Year code (last 2 digits of calendar year) WW Week code (week of ...
Page 29
Plastic Dual In-line (P) – 300 mil (PDIP Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width Overall ...
Page 30
MCP3302/04 14-Lead Plastic Small Outline (SL) – Narrow, 150 mil (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance ...
Page 31
Plastic Thin Shrink Small Outline (ST) – 4.4 mm (TSSOP Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Molded Package Length Foot Length ...
Page 32
MCP3302/04 16-Lead Plastic Dual In-line (P) – 300 mil (PDIP Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width ...
Page 33
Plastic Small Outline (SL) – Narrow 150 mil (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot ...
Page 34
MCP3302/04 NOTES: DS21697B-page 34 2002 Microchip Technology Inc. ...
Page 35
ON-LINE SUPPORT Microchip provides on-line support on the Microchip World Wide Web (WWW) site. The web site is used by Microchip as a means to make files and information easily available to customers. To view the site, the user must ...
Page 36
MCP3302/04 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip prod- uct. If you wish to provide your comments on organization, clarity, subject matter, and ways in which ...
Page 37
PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO Device Grade Temperature Range Device: MCP3302: 13-Bit Serial A/D Converter MCP3302T: 13-Bit Serial A/D ...
Page 38
MCP3302/04 NOTES: DS21697B-page 38 2002 Microchip Technology Inc. ...
Page 39
Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates your responsibility to ensure that your application meets with your specifications. No representation or warranty is ...
Page 40
M W ORLDWIDE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Rocky Mountain 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7966 Fax: 480-792-4338 Atlanta 500 Sugar Mill ...