MCP2036T-I/MG Microchip Technology, MCP2036T-I/MG Datasheet

INTEGRATED CIRCUITS LINEAR - 82

MCP2036T-I/MG

Manufacturer Part Number
MCP2036T-I/MG
Description
INTEGRATED CIRCUITS LINEAR - 82
Manufacturer
Microchip Technology
Type
Sensor Interfacer
Datasheet

Specifications of MCP2036T-I/MG

Applications
Analog I/O
Mounting Type
Surface Mount
Package / Case
16-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP2036T-I/MG
Manufacturer:
MICROCHIP
Quantity:
12 000
Features:
• Complete Inductance Measurement System:
• Operating Voltage: 2.7 to 5.5V
• Low-Power Standby Mode
• Gain and Frequency set by external passive
Typical Applications:
• Harsh environment inductive keyboards
• Inductive rotational sensor interface
• Inductive displacement sensor interface
• Inductive force sensor interface
Package Types
© 2009 Microchip Technology Inc.
- Low-Impedance Current Driver
- Sensor/Reference Coil Multiplexer
- High-Frequency Detector
components
DRVOUT
DRVIN
LREF
LBTN
V
CLK
V
REF
DD
MCP2036 14-pin PDIP, SOIC
Inductive Sensor Analog Front End Device
3
4
1
5
6
7
2
14
13
12
10
11
9
8
V
V
V
V
Reserved
CS
REFSEL
DET+
DET-
DETOUT
SS
DRVOUT
Description:
The MCP2036 Inductive Sensor Analog Front End
(AFE) combines all the necessary analog functions for
a complete inductance measurement system.
The device includes:
• High-frequency, current-mode coil driver for
• Synchronous detector for converting AC sense
• Output amplifier/filter to improve resolution and
• Virtual ground reference generator for single
The device is available in 14-pin PDIP, SOIC and
16-pin QFN packages:
exciting the sensor coil.
voltages into DC levels.
limit noise.
supply operation.
LREF
LBTN
V
DD
4
1
3
2
MCP2036 16-pin QFN
MCP2036
12
10
11
9
V
V
V
Reserved
DETOUT
DET-
SS
DS22186B-page 1

Related parts for MCP2036T-I/MG

MCP2036T-I/MG Summary of contents

Page 1

... DD DRVOUT 5 DRVIN 6 CLK 7 © 2009 Microchip Technology Inc. Description: The MCP2036 Inductive Sensor Analog Front End (AFE) combines all the necessary analog functions for a complete inductance measurement system. The device includes: • High-frequency, current-mode coil driver for exciting the sensor coil. ...

Page 2

... An input resistance of 2K between the inputs and the virtual ground offsets the AC input voltages up to the signal ground generated by the reference voltage generator, as shown in LBTN CLK Op. Amp. Block 0 10K 10K Mixer DRVOUT DRVIN Figure 1-1. V DET DETOUT - V DET- Voltage V REF Reference © 2009 Microchip Technology Inc. ...

Page 3

... This inverts and amplifies the negative side of the signal, while amplifying the positive side. The result is a pulsed DC signal with a peak voltage, proportional to the amplitude of the AC coil voltage. © 2009 Microchip Technology Inc. MCP2036 10Ω R DRVOUT ...

Page 4

... For reference accuracy, no more than 3mA should be supplied to, or drawn from the reference output pin. (see Equation 1-2). GAIN ∼ ⁄ Gain R 10kOhm GAIN output amplifier/filter uses a (V /2). The amplitude REF DD /2. The output is used by the DD © 2009 Microchip Technology Inc. ...

Page 5

... SS path for both analog and digital circuitry of the MCP2036 analog ground plane is available recommended that this device be tied to the analog ground plane of the PCB. © 2009 Microchip Technology Inc. 2-1. I/O Type OUT AN ...

Page 6

... Inputs for Output Detector (V DETOUT V DET- ) for driving the The non-inverting and inverting inputs for the amplifier/filter op amp. The two inputs are connected to the output of the mixer circuit through two internal 10KΩ resistors. , DET+ ) © 2009 Microchip Technology Inc. ...

Page 7

... Key Coils FIGURE 3-1: Using Analog-Multiplexer for Key Selection (Example) Key Coils © 2009 Microchip Technology Inc. For an inductive touch system, two methods are used for switching the driver and measurement circuitry between the different sensor coils: analog multiplexers and GPIO grounding (see ...

Page 8

... DRVOUT V DET- V DETOUT V 10nF DET+ LBTN V CS REF DRVIN LREF CLK REFSEL I/O PWM I/O I/O ADC I/O ® PIC Microcontroller EQUATION 3- GAIN C FILTER R GAIN C FILTER C RGND ADC C ADC 2 ⁄ -Δ start DD 2 ⁄ +Δ stop DD © 2009 Microchip Technology Inc. ...

Page 9

... step DD Substituting in the equation for an RC network: EQUATION 3- ⁄ ΔV ) • [ – ( 2Δ – exp DD ⎛ ⎞ t – 1 – exp ----------------- - ⎝ ⎠ ΔV • = ---------- - ------------------------------------------ - ⎛ ⎞ – exp ----------------- - ⎝ ⎠ © 2009 Microchip Technology Inc. ⁄ MCP2036 DS22186B-page 9 ...

Page 10

... For a power supply of 5V and ΔU = 10mV, IN Note: the resulted gain is 81. To obtain this gain, R GAIN • ⎛ ⎞ • DD 70% ---------- - ⎝ ⎠ 2 Gain = --------------------------------- 2 ΔU • The value of that resistor will GAIN. ∼ Gain R /10kOhm GAIN = 820kOhm should be used. © 2009 Microchip Technology Inc. ...

Page 11

... Input Bias Current I B — Input Offset Current I OS Input Impedance Z IN — Amplifier Output Characteristics Minimum Output Voltage V OMIN Maximum Output Voltage V OMAX © 2009 Microchip Technology Inc. +1. 0.3V +25° +2.7V to +5.5V Min. Typ. Max. Units 2.7 — 5.5 V — ...

Page 12

... T = 85°C (Note 125°C (Note 1) Common mode impedance Differential impedance DRVOUT DRVOUT Resistor between pass gates and output amplifier input Resistor between LBTN and LREF inputs and voltage reference Units Conditions MHz V/µs MHz MHz V/µs © 2009 Microchip Technology Inc. ...

Page 13

... Electrical Characteristics: Unless otherwise indicated, V Parameters Sym. Input Clock Frequency F CLK Duty Factor D Device Turn-On Time t ON Device Power-Down Time t OFF Note 1: Not tested in production but it is characterized. © 2009 Microchip Technology Inc. = +2.7V to +5.5V, and V = GND Min. Typ. Max. -40 — +85 -40 — +125 -40 — ...

Page 14

... MCP2036 NOTES: DS22186B-page 14 © 2009 Microchip Technology Inc. ...

Page 15

... TYPICAL PERFORMANCE CURVES 5.1 Performance Plots FIGURE 5-1: Driver Input Waveforms © 2009 Microchip Technology Inc. MCP2036 DS22186B-page 15 ...

Page 16

... MCP2036 FIGURE 5-2: Inductor Driver Transfer Function (Rload = 100 Ohm) FIGURE 5-3: Pulsed Voltage on Active Key Inductor (I/O Configuration) DS22186B-page 16 © 2009 Microchip Technology Inc. ...

Page 17

... FIGURE 5-4: Pulsed voltage on Reference Inductor Series with Active Inductor © 2009 Microchip Technology Inc. MCP2036 DS22186B-page 17 ...

Page 18

... MCP2036 FIGURE 5-5: Output Detector Response Time DS22186B-page 18 © 2009 Microchip Technology Inc. ...

Page 19

... 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. © 2009 Microchip Technology Inc. MCP2036 Example MCP2036-I/P 0610017 ...

Page 20

... MCP2036 6.2 Package Details The following sections give the technical details of the packages. /HDG 3ODVWLF 'XDO ,Q /LQH 3 ± 1RWH N NOTE 1RWHV DS22186B-page 20 PLO %RG\ >3', © 2009 Microchip Technology Inc. ...

Page 21

... N NOTE 1RWHV © 2009 Microchip Technology Inc. PP %RG\ >62,& φ MCP2036 h α c β DS22186B-page 21 ...

Page 22

... MCP2036 1RWH DS22186B-page 22 © 2009 Microchip Technology Inc. ...

Page 23

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2009 Microchip Technology Inc. MCP2036 DS22186B-page 23 ...

Page 24

... MCP2036 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22186B-page 24 © 2009 Microchip Technology Inc. ...

Page 25

... APPENDIX A: REVISION HISTORY Revision A (05/2009) Original release of the document. Revision B (09/2009) Replaced the 4X4 QFN Package with the 3X3 QFN Package; Replaced ML with MG in the 16-Lead QFN Example; Added SOIC (SL) Land Pattern. © 2009 Microchip Technology Inc. MCP2036 DS22186B-page 25 ...

Page 26

... MCP2036 NOTES: DS22186B-page 26 © 2009 Microchip Technology Inc. ...

Page 27

... Temperature E = -40°C to +125°C Range QFN Package SOIC P = PDIP QTP, SQTP, Code or Special Requirements Pattern: (blank otherwise) © 2009 Microchip Technology Inc. XXX Examples: Pattern MCP2036 - I/P 301 = Industrial temp., PDIP package, QTP pattern #301. (Industrial) (Extended) MCP2036 DS22186B-page 27 ...

Page 28

... MCP2036 NOTES: DS22186B-page 28 © 2009 Microchip Technology Inc. ...

Page 29

... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, 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 30

... Fax: 886-3-6578-370 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 © 2009 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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