My Inquiry
My Account
Analog Devices Inc. LTC1865LCMS#TRPBF
- Part No.:
- LTC1865LCMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1865LCMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,773
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1865LCMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 150ksps, 2-channel software-selectable multiplexed successive approximation ADC in an 8-lead MSOP package, operating from a single 2.7V–3.6V supply with 450µA typical supply current at full speed and auto-shutdown down to 10µA at 1ksps. It features true differential or single-ended analog inputs, external reference support (1V to VCC), SPI/MICROWIRE-compatible 3-wire serial interface, and integrated sample-and-hold - ideal for compact, battery-powered data acquisition systems requiring high resolution without external gain stages.
For engineers reviewing the LTC1865LCMS#TRPBF datasheet, LTC1865LCMS#TRPBF pinout, LTC1865LCMS#TRPBF application, or LTC1865LCMS#TRPBF equivalent, key selection criteria include its 16-bit no-missing-codes performance, ±8 LSB INL, 82 dB SNR, 20 kHz full linear bandwidth, and MSOP-8 footprint compatibility with pin-equivalent 12-bit LTC1860L/LTC1861L - enabling seamless resolution upgrades in space-constrained designs.
Technical Context
The LTC1865LCMS#TRPBF implements a switched-capacitor SAR architecture with internal sample-and-hold and a 2-bit configuration word shifted via SDI to select between CH0/CH1 in differential or single-ended modes. Its conversion timing is fixed at 3.7–4.66 µs, synchronized by CONV rising edge, with data output on SDO synchronized to SCK falling edge in full-duplex mode.
It supports ratiometric operation or external references up to VCC, with analog input range of 0V to VREF (differential) or 0V to VCC (single-ended when IN– grounded), and operates across 0°C to 70°C ambient. The MSOP-8 package separates AGND and DGND pins to minimize digital switching noise coupling into the analog path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage over full-scale range. |
| Sampling Rate | 150 ksps maximum - enables real-time capture of signals up to 20 kHz full linear bandwidth. |
| INL Error | ±8 LSB max - ensures accurate end-point linearity critical for precision sensor interfacing. |
| SNR | 82 dB - supports >13.3 effective number of bits (ENOB) for high-fidelity signal digitization. |
| Supply Current | 450 µA typ at 150 ksps; drops to 10 µA at 1 ksps - enables ultra-low-power operation in duty-cycled systems. |
| Analog Input Range | 0 V to VREF (differential) or 0 V to VCC (single-ended) - allows direct connection to transducers without level-shifting. |
| Reference Support | External VREF from 1 V to VCC - provides flexibility for ratiometric sensing or precision voltage referencing. |
Pinout & Package
Package: 8-lead MSOP (MS8), 3.0 mm × 3.0 mm × 0.86 mm, moisture sensitivity level 1, RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | Reference Input | Defines full-scale span; must be low-noise and bypassed to AGND with ≥1 µF capacitor. |
| CH0 (Pin 2) | Analog Input Channel 0 | Positive input for CH0 in differential mode or single-ended input referenced to GND. |
| CH1 (Pin 3) | Analog Input Channel 1 | Positive input for CH1 in differential mode or second single-ended input. |
| AGND (Pin 4) | Analog Ground | Primary analog return; must connect directly to analog ground plane with minimal impedance. |
| DGND (Pin 5) | Digital Ground | Digital return; should tie to AGND at single point to avoid ground loops. |
| SDI (Pin 6) | Serial Data Input | Receives 2-bit MUX configuration word on rising SCK edges before conversion. |
| SDO (Pin 7) | Serial Data Output | Outputs 16-bit conversion result on falling SCK edges; tri-stated when CONV high. |
| SCK (Pin 8) | Serial Clock Input | Drives synchronous full-duplex communication; supports up to 8 MHz clock frequency. |
Key Features
| Feature | Design Value |
|---|---|
| Software-selectable 2-channel MUX | Configurable via 2-bit SDI word for differential or single-ended CH0/CH1 acquisition - eliminates need for external analog switches. |
| Auto shutdown between conversions | Reduces ICC from 450 µA to 10 µA at 1 ksps - extends battery life in intermittent-sampling applications. |
| High-impedance analog inputs | ±1 µA leakage max and 12 pF input capacitance in sample mode - minimizes loading on high-Z sensors. |
| SPI/MICROWIRE-compatible interface | No minimum data transfer rate; supports DC to 8 MHz SCK - simplifies host MCU firmware integration. |
| True differential input architecture | Rejects common-mode noise on CH0/CH1 pairs - improves accuracy in noisy industrial environments. |
Applications
| Portable Instrumentation | Isolated Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeter or environmental sensor node acquiring temperature, pressure, or strain signals. IC Role / Device Role / Timing Role: Primary 16-bit ADC digitizing conditioned analog outputs from low-power op amps or bridge sensors. Use Value: 450 µA supply current at 150 ksps and auto-shutdown enable >1-year battery life in sleep-wake cycles. |
Use Scenario: Industrial PLC module with opto-isolated analog front-end measuring motor current or voltage. IC Role / Device Role / Timing Role: Isolated-side ADC converting isolated analog signals before serial transmission across barrier. Use Value: Differential input rejection and 82 dB SNR maintain measurement integrity despite ground potential differences. |
| Compact Sensor Interface | Low-Power Battery Monitoring |
|
Use Scenario: Wearable health monitor digitizing ECG or bioimpedance signals with minimal external components. IC Role / Device Role / Timing Role: High-resolution ADC directly interfacing to instrumentation amplifier outputs without gain staging. Use Value: 0 V to VREF input range and 16-bit resolution resolve microvolt-level physiological signals accurately. |
Use Scenario: Smart battery pack monitoring cell voltages and temperatures in multi-cell Li-ion systems. IC Role / Device Role / Timing Role: Precision ADC sampling shunt-based current and voltage rails under tight power budgets. Use Value: 10 µA shutdown current and 1V minimum reference support enable accurate low-voltage measurements at ultra-low quiescent power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1865LIMS#TRPBF | Same silicon, –40°C to 85°C extended temperature grade; identical pinout and electrical specs. | Required for automotive or industrial environments exceeding 70°C ambient. | Select when operating outside 0°C–70°C range; otherwise functionally interchangeable. |
| AD7980BRMZ | 16-bit, 1 MSPS, 750 µA ICC at full speed; SPI-only interface; no auto-shutdown; requires external reference. | Better speed and SNR (91 dB), but higher power and no built-in low-power management. | Choose for higher throughput where power budget allows; not drop-in due to different pinout and no CONV control. |
Compared with LTC1865LCMS#TRPBF, the LTC1865LIMS#TRPBF offers identical performance with extended temperature range, while the AD7980BRMZ trades lower power and simpler control for significantly higher speed and SNR - making it suitable for high-performance, non-battery-constrained systems.
Availability
LTC1865LCMS#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, isolated data acquisition, and compact sensor interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1865LCMS#TRPBF 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
Analog Devices, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving industrial, automotive, communications, and healthcare markets.
The LTC1865LCMS#TRPBF belongs to Linear's precision data acquisition product line, designed specifically for low-power, high-resolution measurement in space- and energy-constrained embedded systems.
FAQ
What is the operating temperature range of the LTC1865LCMS#TRPBF?
The LTC1865LCMS#TRPBF is specified for operation from 0°C to 70°C ambient temperature. This commercial-grade variant is distinct from the LTC1865LIMS#TRPBF (–40°C to 85°C) and LTC1865LACMS#TRPBF (–40°C to 125°C). All variants share identical electrical performance and pinout within their respective temperature ranges, and thermal derating is not required up to 70°C.
Does the LTC1865LCMS#TRPBF require an external reference voltage?
Yes, the LTC1865LCMS#TRPBF requires an external reference voltage applied to the VREF pin (Pin 1) to define its full-scale range. It supports VREF from 1 V to VCC (2.7 V–3.6 V), enabling ratiometric operation with sensor bridges or precision references like the LT1460. In SO-8 packages, VREF is internally tied to VCC, but the LTC1865LCMS#TRPBF MSOP variant mandates an external VREF for full flexibility.
How does the multiplexer configuration work on the LTC1865LCMS#TRPBF?
The LTC1865LCMS#TRPBF uses a 2-bit configuration word shifted into SDI (Pin 6) during the first two SCK rising edges after CONV falls. This word selects among four modes: single-ended CH0, single-ended CH1, differential CH0–CH1, or differential CH1–CH0. The selected channel pair is sampled simultaneously, preserving common-mode rejection. No external hardware is needed - all routing is handled internally based on the SDI command.
Can the LTC1865LCMS#TRPBF operate from a 2.5V supply?
No, the LTC1865LCMS#TRPBF has a minimum supply voltage of 2.7 V per Absolute Maximum Ratings and Recommended Operating Conditions. Operation below 2.7 V may result in degraded INL, increased offset error, or failure to complete conversions reliably. For 2.5 V systems, consider the pin-compatible LTC1865LIMS#TRPBF operated at 2.7 V minimum, or evaluate alternative 16-bit ADCs rated for 2.5 V operation such as the AD7988-1.
What is the purpose of the separate AGND and DGND pins on the LTC1865LCMS#TRPBF?
The LTC1865LCMS#TRPBF separates AGND (Pin 4) and DGND (Pin 5) to isolate analog and digital return currents, minimizing noise coupling from digital switching into the sensitive analog input path. AGND must connect directly to the analog ground plane near bypass capacitors, while DGND should tie to AGND at a single point - typically near the VCC bypass cap - to prevent ground loops and preserve 16-bit accuracy in mixed-signal PCB layouts.
LTC1865LCMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 150k
- Number of Inputs:
- 2
- Input Type:
- 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1865LCMS#TRPBF FAQ
1.How can I place an order for LTC1865LCMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1865LCMS#TRPBF 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 LTC1865LCMS#TRPBF reliable?
The price and inventory of LTC1865LCMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1865LCMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1865LCMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1865LCMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1865LCMS#TRPBF?
LTC1865LCMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1865LCMS#TRPBF 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 LTC1865LCMS#TRPBF?
For technical support, including LTC1865LCMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1865LCMS#TRPBF requirements.
6.How does Aetrix verify that LTC1865LCMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1865LCMS#TRPBF 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 LTC1865LCMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1865LCMS#TRPBF?
All LTC1865LCMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1865LCMS#TRPBF, 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 LTC1865LCMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC1865LCMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1865LCMS#TRPBF 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
