My Inquiry
My Account
Microchip Technology MCP3302-CI/SL
- Part No.:
- MCP3302-CI/SL
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP3302-CI/SL.pdf
- Description:
- IC ADC 13BIT SAR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:439
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCP3302-CI/SL from Microchip Technology is a 13-bit successive approximation register (SAR) analog-to-digital converter with full differential input capability, configurable for two differential or four single-ended channels, ±1 LSB INL (B-grade), 100 ksps sampling rate at 5V, and 50 nA standby current - deployed in remote sensor interfaces and battery-powered data acquisition systems.
For engineers reviewing the MCP3302-CI/SL datasheet, MCP3302-CI/SL pinout, MCP3302-CI/SL application, or MCP3302-CI/SL equivalent, key selection criteria include its SPI serial interface, dual-mode analog input configuration, industrial temperature range (–40°C to +85°C), low-power active/standby operation, and TSSOP-14 package compatibility with mixed-signal PICtail™ evaluation platforms.
Technical Context
The MCP3302-CI/SL implements a SAR architecture with integrated sample-and-hold circuitry, requiring 1.5 clock cycles for acquisition and 13 clock cycles for conversion. Its binary two's complement output includes a sign bit indicating polarity of the differential input voltage (IN+ vs. IN–).
It supports full differential or pseudo-differential operation using external biasing, with VREF programmable from 400 mV to 5V - directly scaling LSB size from 98 µV to 1.22 mV. Common-mode rejection exceeds 79 dB, and channel-to-channel crosstalk is > –110 dB, enabling high-fidelity signal capture in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 13-bit (12 data bits + sign bit): delivers 8192 distinct codes across full-scale differential input range. |
| Sampling Rate | 100 ksps at 5V supply: enables real-time monitoring of signals up to ~40 kHz (Nyquist-limited). |
| INL (B-grade) | ±1 LSB max: ensures monotonic transfer function and <0.012% full-scale linearity error over temperature. |
| Supply Range | 4.5V to 5.5V: guarantees specified performance; operation down to 2.7V possible but with degraded specs. |
| Standby Current | 50 nA typical: extends battery life in sleep-mode sensor nodes without compromising wake-up latency. |
| VREF Range | 0.4V to VDD: allows flexible scaling of input dynamic range and resolution for varying sensor outputs. |
| Interface | SPI-compatible serial interface: simplifies microcontroller integration with minimal GPIO usage and no parallel bus overhead. |
Pinout & Package
Package: 14-lead TSSOP (thin shrink small outline package), 150 mil body width, surface-mount compatible, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 | Analog Input Channels | Configurable as two differential pairs (CH0/CH1, CH2/CH3) or four single-ended inputs; absolute voltage range = VSS – 0.3V to VDD + 0.3V. |
| AGND / DGND | Analog & Digital Ground | Must be connected to same ground plane; separation compromises INL and noise performance. |
| VREF | Reference Voltage Input | Determines full-scale span (±VREF); LSB = 2×VREF/8192; requires stable, low-noise source. |
| VDD | Power Supply | 4.5–5.5V nominal; bypassed with 0.1 µF ceramic capacitor placed adjacent to pin for PSR >74 dB. |
| CS/SHDN | Chip Select / Shutdown | Active-low SPI enable; high state forces device into 1 µA max standby mode - critical for power cycling. |
| CLK | Serial Clock Input | Drives acquisition (1.5 cycles) and conversion (13 cycles); max 2.1 MHz at 5V; min 105 kHz required to prevent charge bleed. |
| DIN | Serial Data Input | Latches channel configuration on rising edge; selects differential/single-ended mode and input channel. |
| DOUT | Serial Data Output | Outputs 13-bit two's complement code MSB-first on falling clock edge; tri-state when CS high. |
Key Features
| Feature | Design Value |
|---|---|
| Full Differential Input Architecture | Rejects common-mode noise up to 79 dB, enabling accurate measurement of low-level signals in electrically noisy industrial environments. |
| User-Configurable Input Mode | Software-selectable between two differential or four single-ended channels via DIN command - eliminates hardware redesign for sensor topology changes. |
| Ultra-Low Standby Power | 50 nA typical current draw in shutdown (CS high) supports multi-year battery life in wireless sensor endpoints. |
| Bipolar Output Capability | Two's complement coding provides true bipolar range (–4096 to +4095) without external level-shifting circuitry. |
| Industrial Temperature Rating | Specified from –40°C to +85°C - validated for deployment in uncontrolled outdoor enclosures and factory-floor instrumentation. |
Applications
| Remote Sensor Interface | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Monitoring thermocouple, strain gauge, or RTD outputs in distributed environmental sensing nodes. IC Role / Device Role / Timing Role: Primary ADC capturing conditioned analog signals; SPI interface synchronizes with host MCU timing budget. Use Value: Full differential inputs reject EMI-induced common-mode offsets; ±1 LSB INL ensures calibration stability across temperature drift. |
Use Scenario: Portable soil moisture or air quality monitors powered by coin-cell or Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Low-power signal digitizer entering deep sleep between 10-second sampling intervals. Use Value: 50 nA standby current extends operational lifetime beyond 5 years; 100 ksps headroom supports burst-mode diagnostics. |
| Transducer Signal Conditioning | Industrial PLC Analog Input Module |
|
Use Scenario: Converting 4–20 mA loop signals or bridge sensor outputs in handheld test equipment. IC Role / Device Role / Timing Role: Front-end ADC with programmable gain stage replacement; handles bipolar pseudo-differential inputs. Use Value: VREF scalability (400 mV–5V) matches transducer output ranges; 79 dB CMRR suppresses 50/60 Hz mains interference. |
Use Scenario: Modular I/O card digitizing multiple 0–10 V or ±5 V field signals in programmable logic controllers. IC Role / Device Role / Timing Role: Channel-multiplexed ADC per signal path; SPI daisy-chaining reduces controller pin count. Use Value: TSSOP-14 footprint enables high-density layout; –40°C to +85°C rating meets EN 61131-2 industrial ambient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 13-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP3302-E/SL | Same silicon, extended temperature grade (–40°C to +125°C); identical pinout, timing, and electrical specs. | Required for under-hood automotive or high-ambient industrial control cabinets where >85°C operation occurs. | Select MCP3302-E/SL only if ambient exceeds +85°C; otherwise MCP3302-CI/SL offers cost-optimized industrial compliance. |
| ADS7822U | 12-bit, 200 ksps, single-supply 2.7–5.25V; SPI interface but no native differential mode - requires external instrumentation amp for differential signals. | Suitable for higher-speed, lower-resolution applications where differential signaling is handled externally. | Choose ADS7822U when sampling rate >100 ksps is mandatory and system already includes precision op-amps for signal conditioning. |
Compared with MCP3302-E/SL, the MCP3302-CI/SL trades extended temperature support for lower unit cost while retaining identical performance at ≤+85°C; versus ADS7822U, it delivers superior differential accuracy and lower power but at reduced speed and narrower supply range.
Availability
MCP3302-CI/SL is available at Aetrix Electronics and suitable for remote sensor interfaces, battery-powered data loggers, and transducer signal conditioning requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MCP3302-CI/SL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and interface ICs, with a focus on embedded control and low-power mixed-signal solutions.
The MCP3302-CI/SL belongs to Microchip's precision SAR ADC product line, designed specifically for high-accuracy, low-power data acquisition in space-constrained and energy-sensitive industrial and portable applications.
FAQ
What is the maximum sampling rate of the MCP3302-CI/SL and under what conditions is it guaranteed?
The MCP3302-CI/SL achieves a maximum sampling rate of 100 ksps when operated at VDD = 5V and FCLK = 2.1 MHz (21 × FSAMPLE). This rate is fully characterized and guaranteed over the industrial temperature range (–40°C to +85°C) with VREF = 5V and full differential input configuration. At lower supply voltages (e.g., 2.7V), the maximum rate decreases due to timing constraints.
Does the MCP3302-CI/SL support true differential input mode, and how is it configured?
Yes, the MCP3302-CI/SL supports true full differential input mode across two independent channel pairs: CH0/CH1 and CH2/CH3. Configuration is performed via the DIN serial command - setting the appropriate control bits selects differential operation, enabling simultaneous sampling of IN+ and IN– with common-mode rejection >79 dB. No external components are needed for basic differential use.
What is the meaning of the "CI" suffix in MCP3302-CI/SL, and how does it affect specification compliance?
The "CI" suffix in MCP3302-CI/SL denotes Industrial temperature grade (–40°C to +85°C) and B-grade accuracy (±1 LSB INL, ±1 LSB DNL). It confirms that the device meets all electrical specifications in DS21697F across that full temperature range. The "SL" indicates 14-lead TSSOP packaging. This grading is verified per Microchip's production test flow and is not a screening option.
Can the MCP3302-CI/SL operate with a reference voltage below 1V, and what impact does that have on resolution?
Yes, the MCP3302-CI/SL accepts VREF from 0.4V to VDD. At VREF = 400 mV, LSB size = 98 µV (2 × 0.4 V / 8192), preserving 13-bit effective resolution - though SNR and SINAD degrade slightly due to reduced signal swing. Performance remains functional and specified, making it suitable for low-voltage sensor interfaces such as MEMS accelerometers or current-sense amplifiers.
How does the CS/SHDN pin function during normal SPI communication and power management?
The CS/SHDN pin serves dual roles: pulled low to initiate SPI frame transmission and conversion, and pulled high to terminate conversion and place MCP3302-CI/SL into standby mode (IDDS ≤ 1 µA). It must be pulsed low for each conversion - it cannot remain asserted across multiple samples. This behavior enables precise power gating synchronized to measurement intervals in ultra-low-power systems.
MCP3302-CI/SL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 13
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP3302-CI/SL FAQ
1.How can I place an order for MCP3302-CI/SL through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP3302-CI/SL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP3302-CI/SL reliable?
The price and inventory of MCP3302-CI/SL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP3302-CI/SL is usually 5 days.
3.What payment methods are accepted for MCP3302-CI/SL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP3302-CI/SL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP3302-CI/SL?
MCP3302-CI/SL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP3302-CI/SL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP3302-CI/SL?
For technical support, including MCP3302-CI/SL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP3302-CI/SL requirements.
6.How does Aetrix verify that MCP3302-CI/SL is sourced from the original manufacturer or authorized distributors?
All MCP3302-CI/SL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP3302-CI/SL meets industry standards.
7.What is the process for return or replacement of MCP3302-CI/SL?
All MCP3302-CI/SL units undergo pre-shipment inspection (PSI). If there is an issue with MCP3302-CI/SL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP3302-CI/SL part is unused and in its original packaging.
Return procedure for MCP3302-CI/SL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP3302-CI/SL Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
