MCP3208-BI/SL Microchip Technology, MCP3208-BI/SL Datasheet

IC ADC 12BIT 2.7V 8CH SPI 16SOIC

MCP3208-BI/SL

Manufacturer Part Number
MCP3208-BI/SL
Description
IC ADC 12BIT 2.7V 8CH SPI 16SOIC
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP3208-BI/SL

Number Of Converters
1
Package / Case
16-SOIC (0.154", 3.90mm Width)
Number Of Bits
12
Sampling Rate (per Second)
100k
Data Interface
Serial, SPI™
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Architecture
SAR
Conversion Rate
100 KSPs
Resolution
12 bit
Input Type
Voltage
Snr
100 dB
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Package
16SOIC N
Sampling Rate
100 KSPS
Number Of Adcs
1
Number Of Analog Inputs
8|4
Digital Interface Type
Serial (4-Wire, SPI)
Polarity Of Input Voltage
Unipolar
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

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Features
• 12-bit resolution
• ± 1 LSB max DNL
• ± 1 LSB max INL (MCP3204/3208-B)
• ± 2 LSB max INL (MCP3204/3208-C)
• 4 (MCP3204) or 8 (MCP3208) input channels
• Analog inputs programmable as single-ended or
• On-chip sample and hold
• SPI serial interface (modes 0,0 and 1,1)
• Single supply operation: 2.7V - 5.5V
• 100 ksps max. sampling rate at V
• 50 ksps max. sampling rate at V
• Low power CMOS technology:
• Industrial temp range: -40°C to +85°C
• Available in PDIP, SOIC and TSSOP packages
Applications
• Sensor Interface
• Process Control
• Data Acquisition
• Battery Operated Systems
Functional Block Diagram
© 2008 Microchip Technology Inc.
pseudo-differential pairs
- 500 nA typical standby current, 2 µA max.
- 400 µA max. active current at 5V
CH7*
CH0
CH1
* Note: Channels 5-7 available on MCP3208 Only
Channel
2.7V 4-Channel/8-Channel 12-Bit A/D Converters
Input
Mux
Sample
Hold
and
CS/SHDN
Control Logic
V
DAC
REF
D
Comparator
IN
CLK
DD
with SPI Serial Interface
DD
= 2.7V
= 5V
12-Bit SAR
Register
V
Shift
D
DD
OUT
V
SS
MCP3204/3208
Description
The
devices are successive approximation 12-bit Analog-
to-Digital (A/D) Converters with on-board sample and
hold circuitry. The MCP3204 is programmable to
provide two pseudo-differential input pairs or four
single-ended inputs. The MCP3208 is programmable
to provide four pseudo-differential input pairs or eight
single-ended inputs. Differential Nonlinearity (DNL) is
specified at ±1 LSB, while Integral Nonlinearity (INL) is
offered in ±1 LSB (MCP3204/3208-B) and ±2 LSB
(MCP3204/3208-C) versions.
Communication with the devices is accomplished using
a simple serial interface compatible with the SPI
protocol. The devices are capable of conversion rates
of up to 100 ksps. The MCP3204/3208 devices operate
over a broad voltage range (2.7V - 5.5V). Low current
design permits operation with typical standby and
active
respectively. 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.
Package Types
PDIP, SOIC, TSSOP
PDIP, SOIC
Microchip
currents
DGND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH0
CH1
CH2
CH3
NC
NC
Technology
of
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
only
16
15
14
13
12
11
10
14
13
12
10
11
9
9
8
500 nA
V
V
AGND
CLK
D
D
CS/SHDN
DGND
V
V
AGND
CLK
D
D
CS/SHDN
Inc.
DD
REF
OUT
IN
DD
REF
OUT
IN
DS21298E-page 1
MCP3204/3208
and
320 µA,

Related parts for MCP3208-BI/SL

MCP3208-BI/SL Summary of contents

Page 1

... Low current design permits operation with typical standby and active currents respectively. 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. Package Types PDIP, SOIC, TSSOP V ...

Page 2

... V IN 0.25 — Note 2 DD — 100 150 µA — 0.001 3.0 µ — REF IN- — V +IN- REF levels. REF = 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 © 2008 Microchip Technology Inc. ...

Page 3

... Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity 3: performance, particularly at elevated temperatures. See Section 6.2 “Maintaining Minimum Clock Speed”, “Maintaining Minimum Clock Speed”, for more information. © 2008 Microchip Technology Inc. = 20*f CLK SAMPLE ...

Page 4

... A T -65 — +150 °C A θ — 70 — °C/W JA θ — 95.3 — °C/W JA θ — 100 — °C/W JA θ — 70 — °C/W JA θ — 86.1 — °C Null Bit MSB OUT = 5V Conditions t CSH DIS LSB © 2008 Microchip Technology Inc. ...

Page 5

... Test Point D OUT C = 100 pF L Voltage Waveforms for OUT Voltage Waveforms for t DO CLK OUT FIGURE 1-2: Load Circuit for t © 2008 Microchip Technology Inc. Test Point D OUT Voltage Waveforms for CLK D OUT Voltage Waveforms for OUT Waveform 1* D OUT Waveform 2† ...

Page 6

... MCP3204/3208 NOTES: DS21298E-page 6 © 2008 Microchip Technology Inc. ...

Page 7

... Digital Code FIGURE 2-3: Integral Nonlinearity (INL) vs. Code (Representative Part). © 2008 Microchip Technology Inc 5V 0V 100 ksps, f REF SS SAMPLE 2 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2 ...

Page 8

... Temperature (°C) Integral Nonlinearity (INL) = 2.7V 2.7 V REF Positive DNL Negative DNL Sample Rate (ksps) Differential Nonlinearity = 2.7V 2 REF ksps SAMPLE Positive DNL Negative DNL 0.5 1.0 1.5 2.0 2.5 3.0 V (V) REF Differential Nonlinearity (V = 2.7V © 2008 Microchip Technology Inc. ...

Page 9

... V DD REF ksps 2 SAMPLE REF F = 100 ksps SAMPLE - (V) REF FIGURE 2-15: Gain Error vs. V © 2008 Microchip Technology Inc 5V 0V 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 3072 3584 4096 0 512 FIGURE 2-16: (DNL) vs ...

Page 10

... V DD REF ksps SAMPLE - 100 Temperature (°C) Offset Error vs REF F = 100 ksps SAMPLE 2 REF ksps SAMPLE 10 100 Input Frequency (kHz) Signal-to-Noise and REF F = 100 ksps SAMPLE 2 REF ksps SAMPLE -30 -25 -20 -15 - Input Signal Level (dB) Signal-to-Noise and © 2008 Microchip Technology Inc. ...

Page 11

... Frequency (Hz) FIGURE 2-27: Frequency Spectrum of 10 kHz input (Representative Part). © 2008 Microchip Technology Inc 5V 0V 100 ksps, f REF SS SAMPLE 12.0 11.5 11 10.5 REF =100 ksps 10.0 9.5 9.0 8.5 8 ...

Page 12

... MHz DD CLK 3.0 3.5 4.0 4.5 5.0 5.5 6 REF REF 2 REF 100 1000 10000 Clock Frequency (kHz) I vs. Clock Frequency. REF REF MHz CLK 2 REF MHz CLK - 100 Temperature (°C) I vs. Temperature. REF © 2008 Microchip Technology Inc. ...

Page 13

... V . DDS DD 100. REF 10.00 1.00 0.10 0.01 -50 - Temperature (°C) FIGURE 2-38: I vs. Temperature. DDS © 2008 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 5.0 5.5 6.0 -50 FIGURE 2-39: Current vs. Temperature. ...

Page 14

... MCP3204/3208 NOTES: DS21298E-page 14 © 2008 Microchip Technology Inc. ...

Page 15

... PIN DESCRIPTIONS The descriptions of the pins are listed in TABLE 3-1: PIN FUNCTION TABLE MCP3204 MCP3208 PDIP, SOIC, PDIP, SOIC TSSOP — 5 — 6 — 7 — — 3.1 Digital Ground (DGND) Digital ground connection to internal digital circuitry. 3.2 Analog Ground (AGND) Analog ground connection to internal analog circuitry. ...

Page 16

... MCP3204/3208 NOTES: DS21298E-page 16 © 2008 Microchip Technology Inc. ...

Page 17

... 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 conversion begins ...

Page 18

... LSB deviation in INL from nominal conditions. DS21298E-page 18 DD Sampling Switch LEAKEAGE 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 kΩ SAMPLE = DAC capacitance = © 2008 Microchip Technology Inc. ...

Page 19

... D1 and D2) are used to select the input channel configuration. Table 5-1 and the configuration bits for the MCP3204 and MCP3208, respectively. The device will begin to sample the analog input on the fourth rising edge of the clock after the start bit has been received. The sample period will end on the falling edge of the fifth clock following the start bit ...

Page 20

... 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. DS21298E-page 20 t CYC Don’ ...

Page 21

... X = “Don’t Care” Bits 8 bits FIGURE 6-1: SPI Communication using 8-bit segments (Mode 0,0: SCLK idles low). © 2008 Microchip Technology Inc shown in the A/D converter contains five leading zeros before the start bit. Arranging the leading zeros this way allows the output 12 bits to fall in positions easily manipulated by the MCU ...

Page 22

... For more information on filtering signals, see AN699, “Anti-Aliasing Analog Filters for Data Acquisition Systems” Don’t Care Data stored into MCU receive register after transmission of last 8 bits Figure 4-2 Figure 6-3, where an op amp ® software. Filter- © 2008 Microchip Technology Inc. ...

Page 23

... Figure 6-4). For more information on layout tips when using A/D converters, refer to AN688, “Layout Tips for 12-Bit A/D converter Applications”. © 2008 Microchip Technology Inc. 4.096V Reference 0.1 µF 1 µF MCP1541 IN+ ...

Page 24

... Digital Side Analog Side -SPI Interface -Sample Cap -Capacitor Array -Shift Register -Comparator -Control Logic Substrate 5 - 10Ω DGND AGND Analog Ground Plane FIGURE 6-5: Separation of Analog and Digital Ground Pins. DS21298E-page 24 6-5, the analog 0.1 µF © 2008 Microchip Technology Inc. ...

Page 25

... In the event the full Microchip part number cannot be marked on one line, it will Note: be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2008 Microchip Technology Inc. MCP3204/3208 Example: MCP3204-B I/P ...

Page 26

... MCP3204/3208 Package Marking Information (Continued) 16-Lead PDIP (300 mil) (MCP3208) XXXXXXXXXXXXXX XXXXXXXXXXXXXX YYWWNNN 16-Lead SOIC (150 mil) (MCP3208) XXXXXXXXXXXXX XXXXXXXXXXXXX YYWWNNN DS21298E-page 26 Example: e MCP3208-BI/P 3 0819256 Example: MCP3208-B I/ XXXXIXXXXXX 0819256 © 2008 Microchip Technology Inc. ...

Page 27

... Microchip Technology Inc. MCP3204/3208 PLO %RG\ >3',3@ DS21298E-page 27 ...

Page 28

... MCP3204/3208 /HDG 3ODVWLF 6PDOO 2XWOLQH 6/ ± 1DUURZ 1RWH 1RWHV DS21298E-page 28 PP %RG\ >62,&@ φ β © 2008 Microchip Technology Inc. α ...

Page 29

... Microchip Technology Inc. MCP3204/3208 DS21298E-page 29 ...

Page 30

... MCP3204/3208 /HDG 3ODVWLF 7KLQ 6KULQN 6PDOO 2XWOLQH 67 ± 1RWH 1RWHV DS21298E-page 30 PP %RG\ >76623@ I © 2008 Microchip Technology Inc. φ ...

Page 31

... Microchip Technology Inc. MCP3204/3208 PLO %RG\ >3',3@ DS21298E-page 31 ...

Page 32

... MCP3204/3208 /HDG 3ODVWLF 6PDOO 2XWOLQH 6/ ± 1DUURZ 1RWH 1RWHV DS21298E-page 32 PP %RG\ >62,&@ α φ β © 2008 Microchip Technology Inc. ...

Page 33

... Microchip Technology Inc. MCP3204/3208 DS21298E-page 33 ...

Page 34

... MCP3204/3208 NOTES: DS21298E-page 34 © 2008 Microchip Technology Inc. ...

Page 35

... The following is the list of modifications: 1. Undocumented changes Revision C (May 2002) The following is the list of modifications: 1. Undocumented changes Revision B (August 1999) The following is the list of modifications: 1. Undocumented changes Revision A (November 1998) • Initial release of this document. © 2008 Microchip Technology Inc. drawings in MCP3204/3208 DS21298E-page 35 ...

Page 36

... MCP3204/3208 NOTES: DS21298E-page 36 © 2008 Microchip Technology Inc. ...

Page 37

... ST = Plastic TSSOP (4.4mm), 14-lead © 2008 Microchip Technology Inc. /XX Examples: Package a) MCP3204-BI/P: b) MCP3204-BI/SL: c) MCP3204-CI/ST: a) MCP3208-BI/P: b) MCP3208-BI/SL: ±1 LSB INL, (Industrial) c) MCP3208-CI/ST: ±2 LSB INL, MCP3204/3208 . ±1 LSB INL, Industrial Temperature, PDIP package. ±1 LSB INL, Industrial Temperature, SOIC package. ±2 LSB INL, Industrial Temperature, TSSOP package. ± ...

Page 38

... MCP3204/3208 NOTES: DS21298E-page 38 © 2008 Microchip Technology Inc. ...

Page 39

... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 40

... Fax: 886-3-572-6459 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 © 2008 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 Tel: 33-1-69-53-63-20 ...

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