MCP3551-E/SN Microchip Technology, MCP3551-E/SN Datasheet

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MCP3551-E/SN

Manufacturer Part Number
MCP3551-E/SN
Description
IC ADC 22BIT 2.7V 1CH SPI 8SOIC
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP3551-E/SN

Package / Case
8-SOIC (0.154", 3.90mm Width)
Number Of Bits
22
Sampling Rate (per Second)
13.75
Data Interface
Serial, SPI™
Number Of Converters
1
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Architecture
Delta-Sigma
Conversion Rate
0.014 KSPs
Input Type
Voltage
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MCP355XDV-MS1 - BOARD DEV SENSOR APP MCP355XMCP355XDM-TAS - BOARD DEMO TINY APP SNSR MCP355X
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP3551-E/SN
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
MCP3551-E/SN
Manufacturer:
MICROCHI
Quantity:
20 000
Features
• 22-bit ADC in Small 8-pin MSOP Package with
• Low-Output Noise of 2.5 µV
• 3 µV Typical Offset Error
• 2 ppm Typical Full-Scale Error
• 6 ppm Maximum INL Error
• Total Unadjusted Error Less Than 10 ppm
• No Digital Filter Settling Time, Single-Command
• Ultra-Low Conversion Current (MCP3550/1):
• Differential Input with V
• 2.7V to 5.5V Single-Supply Operation
• Extended Temperature Range:
Applications
• Weigh Scales
• Direct Temperature Measurement
• 6-digit DVMs
• Instrumentation
• Data Acquisition
• Strain Gauge Measurement
Block Diagram
© 2007 Microchip Technology Inc.
V
Automatic Internal Offset and Gain Calibration
Resolution of 21.9 bits (MCP3550/1)
Conversions through 3-wire SPI Interface
- 100 µA typical (V
- 120 µA typical (V
Range
- -40°C to +125°C
V
IN
IN
+
-
Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs
V
REF
3rd-Order
DS ADC
Modulator
w/ Internal
Calibration
Oscillator
Internal
DD
DD
= 2.7V)
= 5.0V)
SS
to V
RMS
DD
V
POR
V
with Effective
SS
DD
Common Mode
V
DD
SCK
SDO
RDY
CS
MCP3550/1/3
Description
The Microchip Technology Inc. MCP3550/1/3 devices
are 2.7V to 5.5V low-power, 22-bit Delta-Sigma Ana-
log-to-Digital Converters (ADCs). The devices offer
output noise as low as 2.5 µV
unadjusted error of 10 ppm. The family exhibits 6 ppm
Integral Non-Linearity (INL) error, 3 µV offset error and
less than 2 ppm full-scale error. The MCP3550/1/3
devices provide high accuracy and low noise
performance
measurements (such as pressure, temperature and
humidity) are performed. With the internal oscillator
and
components
applications.
This product line has fully differential analog inputs,
making it compatible with a wide variety of sensor,
industrial control or process control applications.
The MCP3550/1/3 devices operate from -40°C to
+125°C and are available in the space-saving 8-pin
MSOP and SOIC packages.
Package Types:
Device Selection Table
MCP3550-50
MCP3550-60
MCP3551
MCP3553
Part Number
high
V
V
V
V
REF
IN
IN
SS
oversampling
+
13.75 sps
12.5 sps
are
Sample
for
1
2
3
4
15 sps
60 sps
MCP3550/1/3
Rate
SOIC, MSOP
applications
required
Resolution
Effective
21.9 bits
21.9 bits
21.9 bits
20.6 bits
rate,
8
7
6
5 SCK
for
V
CS
SDO/RDY
RMS
minimal
DD
DS21950D-page 1
where
, with a total
(simultaneous)
high-accuracy
Rejection
50/60 Hz
50/60 Hz
50 Hz
60 Hz
N/A
external
sensor

Related parts for MCP3551-E/SN

MCP3551-E/SN Summary of contents

Page 1

... MSOP and SOIC packages. Package Types: V REF Device Selection Table Part Number SCK MCP3550-50 SDO RDY MCP3550-60 CS MCP3551 MCP3553 , with a total RMS for applications where sensor oversampling rate, minimal external are required for high-accuracy MCP3550/1/3 SOIC, MSOP 1 8 ...

Page 2

... Output Noise e Effective Resolution ER Noise Performance (MCP3553) No Missing Codes NMC Output Noise e Effective Resolution ER Conversion Times MCP3550-50 t CONV MCP3550-60 t CONV MCP3551 t CONV MCP3553 t CONV Accuracy Integral Non-Linearity INL Offset Error V Positive Full-Scale Error V FS,P Negative Full-Scale Error V FS,N Offset Drift Positive/Negative Full-Scale Error ...

Page 3

... Shutdown Mode Leakage Current Reference Input Voltage Range Reference Input Sampling Capacitor Reference Input Impedance Shutdown Mode Reference Leakage Current Power Requirements Power Supply Voltage Range V MCP3550-50, MCP3551 Supply I DD Current MCP3550-60, MCP3553 Supply I DD Current Supply Current, Sleep Mode I DDSL ...

Page 4

... MHz 90 — — — — — — — — — — — — — — ns — 10 — µs — 10 — µs ≤ +85° 2.7V or 5.0V Units Conditions mA 5. µA pF Note 1 + and 5V. REF Conditions ≤ +85°C, A Conditions © 2007 Microchip Technology Inc. ...

Page 5

... RDY t CSD t CS CSL SDO /RDY SCK SU FIGURE 1-1: Serial Timing FIGURE 1-2: Power-up Timing. © 2007 Microchip Technology Inc. f SCK PUCSL MCP3550/1/3 t CSHSD t DIS DS21950D-page 5 ...

Page 6

... FIGURE 2-5: Temperature -2.5 FIGURE 2-6: Voltage ( / REF 1.5 2 2.5 3 3 (V) REF Maximum INL Error vs 100 125 Temperature (°C) Maximum INL Error vs. MCP3553 MCP3550/1 -1.5 -0.5 0.5 1.5 2.5 V (Volts) IN Output Noise vs. Input = 2.7V). © 2007 Microchip Technology Inc. ...

Page 7

... V (V) REF FIGURE 2-8: Output Noise vs MCP3553 MCP3550 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-9: Output Noise vs.V © 2007 Microchip Technology Inc 2.5V 0V REF 1.5 2.5 -50 -25 FIGURE 2-10: Temperature 4.0 5.0 2 FIGURE 2-11: ...

Page 8

... FIGURE 2-18: (TUE) vs. Input Voltage ( / REF Output Code (LSB) MCP3550/1 Output Noise - Output Code (LSB) MCP3553 Output Noise V (V) IN Total Unadjusted Error = 2.7V). DD © 2007 Microchip Technology Inc. ...

Page 9

... IN FIGURE 2-20: Total Unadjusted Error (TUE) vs. Input Voltage (V = 5.0V). REF (V) REF FIGURE 2-21: Maximum TUE vs. V © 2007 Microchip Technology Inc 2.5V 0V REF SS . Unless otherwise noted, graphs apply to entire MCP3550/1/3 family -50 -25 1.5 2 2.5 FIGURE 2-22: Temperature. 5 4.5 4 3 ...

Page 10

... MCP3550-50, MCP3550/1 100 2.5 3 3.5 4 4.5 V (V) DD FIGURE 2-25 DS21950D-page 2.5V 0V REF SS 160 MCP3550-60, MCP3553 140 120 100 5.5 -50 -25 FIGURE 2-26 / REF IN IN MCP3550-50, MCP3550 100 125 Temperature (°C) I vs. Temperature. DD © 2007 Microchip Technology Inc. ...

Page 11

... the power supply pin for the analog and digital DD circuitry within the MCP3550/1/3. This pin requires an appropriate bypass capacitor of 0.1 µF. The voltage on © 2007 Microchip Technology Inc. I/O/P I Reference Voltage Analog Input Pin I Non-inverting Analog Input Pin I Inverting Analog Input Pin ...

Page 12

... When the device is not converting, it auto- matically goes into Shutdown mode and, while in this mode, consumes less than 1 µA. Reference Input Conversion Bit Digital Third-Order Stream ΔΣ Decimation 4 Modulator Filter (SINC ) Clock Internal Oscillator Output Code Code SPI 3-wire Interface © 2007 Microchip Technology Inc. ...

Page 13

... Ratio and L is the order of the filter. The MCP3550-50 device has the main filter notch located at 50 Hz. For the MCP3550-60 device, the notch is located at 60 Hz. The MCP3551 device has its notch located at 55 Hz, and for the MCP3553 device, the main notch is located at 240 Hz, with an OSR of 128 ...

Page 14

... This high accuracy, combined with wide notches, will ensure that the MCP3551 will have simul- taneous 50 Hz and 60 Hz line frequency rejection and the MCP3550-50 or MCP3550-60 devices will have greater than 120 dB rejection (at either Hz) by the digital filtering, even when jitter is present ...

Page 15

... Slow settling of the input circuit will create additional gain error rule of thumb, in order to obtain 1 ppm absolute measurement accuracy, the sampling period must be 14 times greater than the input circuit RC time constant. © 2007 Microchip Technology Inc. 4.5 Voltage Reference Input Pin The MCP3550/1/3 devices accept a single-ended and ...

Page 16

... This allows all internal analog circuitry to settle to their proper operating point. This timing is typically less than 300 µs, which is negligible compared to one conversion time (e.g. 72.7 ms for the MCP3551). Figure 4-6 illustrates the conditions for a power-up and power-down event under typical start-up conditions ...

Page 17

... FIGURE 5-1: Typical Serial Device Communication and Example Digital Output Codes for Specific Analog Input Voltages. © 2007 Microchip Technology Inc. Bit 21 to bit 0 represents the output code in 22-bit binary two's complement. Bit 21 is the sign bit and is logic ‘0’ when the differential analog input is positive and logic ‘ ...

Page 18

... The most recent conversion data will always be available in the Output register. When the device exits Shutdown, there is an internal power-up delay that must be observed. Sleep x24 Hi CONV CONV Shutdown Hi-Z Shutdown x24 Hi-Z © 2007 Microchip Technology Inc. ...

Page 19

... Int. Osc t CONV Hi-Z SDO/RDY FIGURE 5-4: RDY Functionality in Single Conversion Mode. © 2007 Microchip Technology Inc. MCP3550/1/3 5.4 Continuous Conversion Mode , If no rising edge of CS occurs during any given conver- CONV sion per Figure 5-2, a subsequent conversion will take place and the contents of the previous conversion will be overwritten ...

Page 20

... Continuous Conversion mode, with internal conversions continuously occurring. This mode can be entered by having CS low during power-up or changing low position after power-up low at power- up, the first conversion of the converter is initiated approximately 300 µs after the power supply has stabilized. DS21950D-page 20 © 2007 Microchip Technology Inc. ...

Page 21

... FIGURE 5-7: SPI Communication – Mode 0,0. © 2007 Microchip Technology Inc. In SPI mode 1,1, data is read using only 24 clocks or three byte transfers. The data ready bit must be read by testing the SDO/RDY line prior to a falling edge of the clock ...

Page 22

... 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. DS21950D-page 22 Example: e 3553E 3 715256 Examples: MCP3551E e SN^^ 0715 3 256 © 2007 Microchip Technology Inc. ...

Page 23

... 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 ...

Page 24

... NOM MAX 8 1.27 BSC – 1.75 – – – 0.25 6.00 BSC 3.90 BSC 4.90 BSC – 0.50 – 1.27 1.04 REF – 8° – 0.25 – 0.51 – 15° – 15° Microchip Technology Drawing C04-057B © 2007 Microchip Technology Inc. ...

Page 25

... Original Release of this Document. Revision B (October 2005) • Changed LSb refefences to LSB. Revision C (December 2005) • Added MCP3550-50, MCP3550-60 references throughout this document. Revision D (January 2007) • This update includes revisions to the packaging diagrams. © 2007 Microchip Technology Inc. MCP3550/1/3 DS21950D-page 25 ...

Page 26

... MCP3550/1/3 NOTES: DS21950D-page 26 © 2007 Microchip Technology Inc. ...

Page 27

... MSOP. c) MCP3550-60-E/SN: Extended Temp., 8LD SOIC. d) MCP3550/1T-60E/SN:Tape and Reel, Extended Temp., 8LD SOIC. a) MCP3551-E/MS: Extended Temp., 8LD MSOP. b) MCP3551T-E/MS: Tape and Reel, Extended Temp., 8LD MSOP. c) MCP3553-E/SN: Extended Temp., 8LD SOIC. d) MCP3553T-E/SN: Tape and Reel, Extended Temp., 8LD SOIC. DS21950D-page 27 ...

Page 28

... MCP3550/1/3 NOTES: DS21950D-page 28 © 2007 Microchip Technology Inc. ...

Page 29

... Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, 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: 886-3-572-6459 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 © 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 Tel: 33-1-69-53-63-20 ...

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