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MCP6V28 Datasheet

Download or read online Microchip Technology MCP6V28 620 μA, 2 MHz Auto-Zeroed Op Amps pdf datasheet.



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620 µA, 2 MHz Auto-Zeroed Op Amps
Features
• High DC Precision:
- V
Drift: ±50 nV/°C (maximum)
OS
- V
: ±2 µV (maximum)
OS
- A
: 125 dB (minimum)
OL
- PSRR: 125 dB (minimum)
- CMRR: 120 dB (minimum)
- E
: 1.0 µV
(typical), f = 0.1 Hz to 10 Hz
ni
P-P
- E
: 0.32 µV
(typical), f = 0.01 Hz to 1 Hz
ni
P-P
• Low Power and Supply Voltages:
- I
: 620 µA/amplifier (typical)
Q
- Wide Supply Voltage Range: 2.3V to 5.5V
• Easy to Use:
- Rail-to-Rail Input/Output
- Gain Bandwidth Product: 2 MHz (typical)
- Unity Gain Stable
- Available in Single and Dual
- Single with Chip Select (CS): MCP6V28
• Extended Temperature Range: -40°C to +125°C
Typical Applications
• Portable Instrumentation
• Sensor Conditioning
• Temperature Measurement
• DC Offset Correction
• Medical Instrumentation
Design Aids
• SPICE Macro Models
®
• FilterLab
Software
• Microchip Advanced Part Selector (MAPS)
• Analog Demonstration and Evaluation Boards
• Application Notes
Related Parts
Parts with lower power, lower bandwidth and higher
noise:
• MCP6V01/2/3: Spread clock
• MCP6V06/7/8: Non-spread clock
© 2011 Microchip Technology Inc.
MCP6V26/7/8
Description
The Microchip Technology Inc. MCP6V26/7/8 family of
operational amplifiers provides input offset voltage
correction for very low offset and offset drift. These
devices have a wide gain bandwidth product (2 MHz,
typical) and strongly reject switching noise. They are
unity gain stable, have no 1/f noise, and have good
power supply rejection ratio (PSRR) and common
mode rejection ratio (CMRR). These products operate
with a single supply voltage as low as 2.3V, while
drawing 620 µA/amplifier (typical) of quiescent current.
The Microchip Technology Inc. MCP6V26/7/8 op amps
are offered as a single (MCP6V26), single with Chip
Select (CS) (MCP6V28) and dual (MCP6V27). They
were designed using an advanced CMOS process.
Package Types (top view)
MCP6V26
MCP6V26
MSOP, SOIC
2×3 TDFN *
NC
NC
1
8
NC
1
2
V
2
7
V
V
IN
DD
IN
V
+
3
V
+
3
6
V
IN
IN
OUT
V
5 NC
V
4
4
SS
SS
MCP6V27
MCP6V27
MSOP, SOIC
4×4 DFN *
V
V
1
8
V
1
DD
OUTA
OUTA
V
2
7
V
2
V
OUTB
INA
INA
V
V
+
3
6
V
+
3
INB
INA
INA
V
+
V
4
5
V
4
INB
SS
SS
MCP6V28
MCP6V28
MSOP, SOIC
2×3 TDFN *
NC
CS
1
8
NC
1
V
V
2
7
2
V
IN
DD
IN
V
+
3
6
V
V
+
3
IN
OUT
IN
V
4
5 NC
V
SS
4
SS
* Includes Exposed Thermal Pad (EP); see
NC
8
V
7
EP
DD
9
V
6
OUT
NC
5
V
8
DD
V
7
EP
OUTB
9
V
6
INB
V
+
5
INB
CS
8
V
7
EP
DD
9
V
6
OUT
NC
5
Table
3-1.
DS25007B-page 1

Summary of Contents

Page 1

... Easy to Use: - Rail-to-Rail Input/Output - Gain Bandwidth Product: 2 MHz (typical) - Unity Gain Stable - Available in Single and Dual - Single with Chip Select (CS): MCP6V28 Extended Temperature Range: -40°C to 125°C Typical Applications Portable Instrumentation Sensor Conditioning Temperature Measurement • ...

Page 2

... MCP6V26/7/8 Typical Application Circuit 10 kΩ 10 kΩ kΩ 500 kΩ 5 kΩ 10 kΩ MCP6V26 Offset Voltage Correction for Power Driver DS25007B-page 2 V OUT U 2 MCP661 /2 © 2011 Microchip Technology Inc. ...

Page 3

... Screens). 2: Figure 2-18 shows how V CML © 2011 Microchip Technology Inc. Notice: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied ...

Page 4

... CM (Note 1, Note 5.5V -0.15V to 5.7V CM (Note 1, Note 2.3V 0.2V to 2.1V OUT (Note 5.5V 0.2V to 5.3V OUT (Note 2, 0.5V input overdrive 2, 0.5V input overdrive 2. 5. µ see Appendix B: Offset 1 © 2011 Microchip Technology Inc. ...

Page 5

... These parameters were characterized using the circuit IMD tone at DC, a residual tone at 1 kHz, other IMD tones and clock tones. 2: High gains behave differently; see 3: t includes some uncertainty due to clock edge timing. ODR © 2011 Microchip Technology Inc. 25° 2.3V to 5.5V / kΩ ...

Page 6

... CS Logic Threshold, High V CS Input Current, High I CSH CS Input High, I GND Current per amplifier I Amplifier Output Leakage, I O_LEAK CS High CS Dynamic Specifications (MCP6V28) CS Low to Amplifier Output On t Turn-on Time CS High to Amplifier Output t OFF High-Z Internal Hysteresis V HYST TABLE 1-4: TEMPERATURE SPECIFICATIONS Electrical Characteristics: Unless otherwise indicated, all limits are specified for: V ...

Page 7

... I SS (typical (typical MΩ (typical) FIGURE 1-4: Chip Select (MCP6V28). © 2011 Microchip Technology Inc. 1.4 Test Circuits The circuits used for the DC and AC tests are shown in Figure 1-5 and 2.3V to 5.5V out as discussed in ing and Filtering. R tion of R and µ ...

Page 8

... Power Supply Voltage with V 5 Representative Part 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 FIGURE 2-6: Output Voltage / / OUT DD Input Offset Voltage vs CML Input Offset Voltage vs CMH 2. 5.5V DD Output Voltage (V) Input Offset Voltage vs. © 2011 Microchip Technology Inc. ...

Page 9

... Input Offset Voltage vs. Common Mode Voltage with V 5.5V. DD 35% 20 Samples T 25°C 30% A 25 15% 10 1/CMRR (µV/V) FIGURE 2-9: CMRR. © 2011 Microchip Technology Inc. 2.3V to 5.5V GND 30% 20 Samples T A 25% 20% 15% 10 2.5 3.0 FIGURE 2-10: 100% 20 Samples 90% T 80% 70% ...

Page 10

... FIGURE 2-17: Voltage (below / / OUT 105 115 125 Ambient Temperature (°C) Input Bias and Offset 125°C 85°C 25°C -40°C Input Voltage (V) Input Bias Current vs. Input ). SS © 2011 Microchip Technology Inc. ...

Page 11

... 2. -50 - Ambient Temperature (°C) FIGURE 2-20: Output Voltage Headroom vs. Ambient Temperature. © 2011 Microchip Technology Inc. 2.3V to 5.5V GND Wafer Lot -10 -20 -30 -40 75 100 125 FIGURE 2-21: vs. Power Supply Voltage. 800 700 ...

Page 12

... Note: Unless otherwise indicated 25° / kΩ and CS GND 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 - Ambient Temperature (°C) FIGURE 2-24: Power On Reset Voltage vs. Ambient Temperature. DS25007B-page 12 2.3V to 5.5V GND 100 125 OUT DD © 2011 Microchip Technology Inc. ...

Page 13

... Frequency with V 2.3V -10 -20 1k 10k 100k 1M 1.E03 1.E04 1.E05 1.E06 Frequency (Hz) FIGURE 2-27: Open-Loop Gain vs. Frequency with V 5.5V. DD © 2011 Microchip Technology Inc. 2.3V to 5.5V GND 3.0 2.5 2 1.5 1.0 0.5 0.0 1M -50 50 1.E06 FIGURE 2-28: and Phase Margin vs. Ambient Temperature. 4 2.3V 3.5 - 3.0 -60 -90 V 2.5 OL -120 2 0 2.0 -150 1 ...

Page 14

... Frequency (Hz) FIGURE 2-32: Closed-Loop Output Impedance vs. Frequency with V DD DS25007B-page 14 2.3V to 5.5V GND 100M 1.0E08 FIGURE 2-33: 2.3V. Separation vs. Frequency 0.1 1k 100M 1.E03 1.0E08 FIGURE 2-34: 5.5V. Swing vs. Frequency / / OUT DD Channel-to-Channel 2.3V DD 10k 100k 1M 1.E04 1.E05 1.E06 Frequency (Hz) Maximum Output Voltage © 2011 Microchip Technology Inc. ...

Page 15

... V tone kHz CM PK 0.1 100 1k 10k 1.E02 1.E03 1.E04 Frequency (Hz) FIGURE 2-37: Intermodulation Distortion vs. Frequency with V Disturbance (see CM Figure 1-7). © 2011 Microchip Technology Inc. 25° 2.3V to 5.5V 1,000 100 100 V tone 0.1 1 100 100k 100k 1.E02 FIGURE 2-38: vs ...

Page 16

... OUT 5. Time (µs) Non-inverting Small Signal Time (µs) Non-inverting Large Signal Time (µs) Inverting Small Signal Step © 2011 Microchip Technology Inc. ...

Page 17

... Inverting Large Signal Step Response. 1 5.5V DD 1.4 Falling Edge 1.2 1.0 0.8 0 2.3V Rising Edge DD 0.4 0.2 0.0 -50 - Ambient Temperature (°C) FIGURE 2-48: Slew Rate vs. Ambient Temperature. © 2011 Microchip Technology Inc. 2.3V to 5.5V GND 6.0 5 4.0 3.0 2.0 1.0 V OUT 0.0 -1 FIGURE 2-49: vs. Time with G -100 V/V. 1000 0.5V Output Overdrive 100 t , high ODR 10 ...

Page 18

... MCP6V26/7/8 Note: Unless otherwise indicated / kΩ pF, and CS GND 2.6 Chip Select Response (MCP6V28 only) 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Power Supply Voltage (V) FIGURE 2-51: Chip Select Current vs. Power Supply Voltage. 700 600 500 Op Amp Op Amp turns on turns off 400 here ...

Page 19

... Ambient Temperature (°C) FIGURE 2-58: Chip Select Hysteresis 2. -50 - Ambient Temperature (°C) FIGURE 2-59: Chip Select Turn On Time vs. Ambient Temperature. © 2011 Microchip Technology Inc. 2.3V to 5.5V GND 5. 2. -50 75 100 125 FIGURE 2-60: ...

Page 20

... NC 9 EP 3.4 Chip Select (CS) Digital Input This pin (CS CMOS, Schmitt-triggered input that places the MCP6V28 op amp into a low power mode of operation. 3.5 Exposed Thermal Pad (EP , … There is an internal connection between the Exposed Thermal Pad (EP) and the V connected to the same potential on the Printed Circuit Board (PCB) ...

Page 21

... The Output Buffer is designed to drive external loads at the V pin. It also produces a single-ended output OUT voltage ( internal reference voltage). REF © 2011 Microchip Technology Inc. MCP6V26/7/8 4.1 Overview of Auto-Zeroing Operation Figure 4-1 shows a simplified diagram of the MCP6V26/7/8 auto-zeroed op amps. This will be used to explain how the DC voltage errors are reduced in this architecture ...

Page 22

... Equivalent Diagram. 2 frequencies. Each of the square wave clocks harmonics has a series of IMD tones centered on it. See Figure 2-37 ) and very low offset OL Output V OUT Buffer /ΔT ), 1/f noise, and input offset OS A Output V OUT Buffer and Figure 2-38. © 2011 Microchip Technology Inc. ...

Page 23

... Pad FIGURE 4-4: Simplified Analog Input ESD Structures. © 2011 Microchip Technology Inc. The input ESD diodes clamp the inputs when they try to go more than one diode drop below V clamp any voltages that are well above V breakdown voltage is high enough to allow normal ...

Page 24

... This op amp is designed to drive light loads; use another amplifier to buffer the output from heavy loads. 4.2.3 CHIP SELECT (CS) The single MCP6V28 has a Chip Select (CS) pin. When CS is pulled high, the supply current for the corresponding op amp drops to about 1 µA (typical), and is pulled through the CS pin to V happens, the amplifier is put into a high impedance state ...

Page 25

... Modify R 's value until the ISO response is reasonable. Bench evaluation and simulations with the MCP6V26/7/8 SPICE macro model are helpful. © 2011 Microchip Technology Inc. 4.3.7 STABILIZING OUTPUT LOADS This family of auto-zeroed op amps has an output impedance (Figure 2-31 double zero when the gain is low. This can cause a large phase shift in feedback networks that have low resistance near the part’ ...

Page 26

... Layout Techniques) contains in depth information on PCB layout techniques that minimize thermo-junction effects. It also discusses other effects, such as crosstalk, impedances, mechanical stresses and humidity. for DD shows a 50Ω 1/10W 0.1 µF 100 µ MCP6V2X Additional Supply Filtering. PCB Layout © 2011 Microchip Technology Inc. ...

Page 27

... Use more appropriate capacitor types in the signal path and minimize mechanical stresses and vibration. Humidity can cause electro-chemical potential voltages to appear in a circuit. Proper PCB cleaning helps, as does the use of encapsulants. © 2011 Microchip Technology Inc. MCP6V26/7/8 4.4 Typical Applications 4.4.1 WHEATSTONE BRIDGE Many sensors are configured as Wheatstone bridges ...

Page 28

... Thevenin Equivalent Resistance )/250 MCP6V26 )/250 Thermocouple Sensor; DD 4.100(R ) 0.5696 )/250 MCP6V26 )/250 kΩ Thermocouple Sensor. © 2011 Microchip Technology Inc. 4 ...

Page 29

... OS not operate properly without a feedback loop MCP6V26 kΩ MCP6541 FIGURE 4-18: Precision Comparator. © 2011 Microchip Technology Inc. 4-15). ). The TH device can be integrate 2 V OUT U 2 MCP661 /2 V OUT MCP6V26/7/8 DS25007B-page 29 ...

Page 30

... MCP6V26/7/8 NOTES: DS25007B-page 30 © 2011 Microchip Technology Inc. ...

Page 31

... Helpful links are also provided for Data sheets, Purchase and Sampling of Microchip parts. © 2011 Microchip Technology Inc. MCP6V26/7/8 5.4 Analog Demonstration and Evaluation Boards ...

Page 32

... MCP6V26/7/8 NOTES: DS25007B-page 32 © 2011 Microchip Technology Inc. ...

Page 33

... DFN (4x4x0.9 mm) (MCP6V27) XXXXXX XXXXXX YYWW NNN PIN 1 8-Lead MSOP (3x3 mm) 8-Lead SOIC (3.90 mm) NNN 8-Lead TDFN (2x3x0.75 mm) (MCP6V26, MCP6V28) Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week 01) ...

Page 34

... MCP6V26/7/8 8-Lead Plastic Flat, No Lead Package (MD) 4x4x0.9 mm Body [DFN] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS25007B-page 34 Microchip Technology Drawing C04-131E Sheet © 2011 Microchip Technology Inc. ...

Page 35

... Plastic Flat, No Lead Package (MD) 4x4x0.9 mm Body [DFN] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2011 Microchip Technology Inc. MCP6V26/7/8 Microchip Technology Drawing C04-131E Sheet DS25007B-page 35 ...

Page 36

... MCP6V26/7/8 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS25007B-page 36 © 2011 Microchip Technology Inc. ...

Page 37

... D N NOTE © 2011 Microchip Technology Inc MCP6V26/7/8 φ L DS25007B-page 37 ...

Page 38

... MCP6V26/7/8 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS25007B-page 38 © 2011 Microchip Technology Inc. ...

Page 39

... Microchip Technology Inc. MCP6V26/7/8 DS25007B-page 39 ...

Page 40

... MCP6V26/7/8 DS25007B-page 40 © 2011 Microchip Technology Inc. ...

Page 41

... Microchip Technology Inc. MCP6V26/7/8 DS25007B-page 41 ...

Page 42

... MCP6V26/7/8 DS25007B-page 42 © 2011 Microchip Technology Inc. ...

Page 43

... Microchip Technology Inc. MCP6V26/7/8 DS25007B-page 43 ...

Page 44

... MCP6V26/7/8 DS25007B-page 44 © 2011 Microchip Technology Inc. ...

Page 45

... APPENDIX A: REVISION HISTORY Revision B (August 2011) The following is the list of modifications: 1. Added the MCP6V26 and MCP6V28 single op amps. a) Updated package drawings on page 1. b) Updated the pinout table (Table c) Added 8-lead, 2×3 TDFN package to the Thermal Characteristics Table d) Added 8-lead, 2×3 TDFN package to Section 6.0 “ ...

Page 46

... 114 — 122 — Table B-1. GND, SS Figure 1-5 and Figure 1-6). Conditions 25°C (Note 1, Note 2) -40 to 125°C (Note 2.3V -0.15V to 2.5V (Note 5.5V -0.15V to 5.7V (Note 2.3V 0.2V to 2.1V (Note 1) OUT 5.5V 0.2V to 5.3V (Note 1) OUT © 2011 Microchip Technology Inc. ...

Page 47

... Single Op Amp MCP6V26T Single Op Amp (Tape and Reel) MCP6V27 Dual Op Amp MCP6V27T Dual Op Amp (Tape and Reel) MCP6V28 Single Op Amp with Chip Select MCP6V28T Single Op Amp with Chip Select (Tape and Reel) Temperature Range -40°C to 125°C Package Plastic Dual Flat, No-Lead (4×4x0.9), 8-lead MNY Plastic Dual Flat, No-Lead (2× ...

Page 48

... MCP6V26/7/8 NOTES: DS25007B-page 48 © 2011 Microchip Technology Inc. ...

Page 49

... 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. © 2011, Microchip Technology Incorporated, Printed in the U ...

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... Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-5778-366 Fax: 886-3-5770-955 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2011 Microchip Technology Inc. 08/02/11 ...

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