My Inquiry
My Account
Analog Devices Inc. LTC1860IMS8#PBF
- Part No.:
- LTC1860IMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1860IMS8#PBF.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:613
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1860IMS8#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, single-channel, successive-approximation analog-to-digital converter with true differential input, operating on a single 5V supply at up to 250ksps sampling rate. It features auto-shutdown (1nA typical sleep current), SPI/MICROWIRE-compatible 3-wire serial interface, and MSOP-8 package. It is used in low-power portable instrumentation requiring high resolution and rail-to-rail input capability with external reference flexibility.
For engineers reviewing the LTC1860IMS8#PBF datasheet, LTC1860IMS8#PBF pinout, LTC1860IMS8#PBF application, or LTC1860IMS8#PBF equivalent, key selection criteria include guaranteed operation from –40°C to +85°C, differential input range of 0 to VREF, 72dB SNR at 100kHz, and compatibility with 1V–5V reference voltages for reduced full-scale spans.
Technical Context
The LTC1860IMS8#PBF implements a switched-capacitor SAR architecture with integrated sample-and-hold. Its conversion cycle is initiated by a rising edge on CONV, completing in 2.75–3.3µs (H-grade), followed by automatic power-down when CONV remains high. Data is clocked out on SDO synchronized to SCK falling edges, with setup/hold timing referenced to CONV transitions.
It supports ratiometric operation or external references via the VREF pin, accepts analog inputs from (GND – 0.05V) to (VCC + 0.05V), and maintains high-impedance analog inputs (±1µA leakage) with 12pF input capacitance in sample mode. Full linear bandwidth is 125kHz at S/(N+D) ≥ 68dB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with no missing codes over full temperature range. |
| Max Sampling Rate | 250ksps - enables real-time acquisition of signals up to 125kHz Nyquist bandwidth. |
| Supply Current @ 250ksps | 850µA typical - supports battery-powered systems with minimal power budget impact. |
| Sleep Current | 1nA typical between conversions - extends operational life in duty-cycled sensing applications. |
| INL Error | ±1 LSB - ensures monotonicity and accurate end-point linearity for precision measurement. |
| SNR | 72 dB - provides >11.9 effective number of bits (ENOB) for clean signal digitization. |
| Analog Input Range | 0 V to VREF differential - allows direct connection to transducer outputs without gain stages when VREF ≥ 1V. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3.0mm × 3.0mm body, 0.65mm pitch, lead-free finish, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | Reference voltage input | Defines full-scale span; supports 1V–5V externally applied reference; must be bypassed with ≥1µF tantalum to AGND. |
| IN+ (Pin 2) | Differential analog input (+) | High-impedance input sampled simultaneously with IN–; common-mode rejection improves noise immunity. |
| IN– (Pin 3) | Differential analog input (–) | Paired with IN+; zero code occurs when IN+ – IN– = 0V; enables true differential measurement. |
| GND (Pin 4) | Analog ground | Primary return path for analog circuitry; must connect directly to analog ground plane with minimal trace length. |
| CONV (Pin 5) | Convert control input | Rising edge initiates conversion; falling edge enables SDO output; high state after conversion triggers auto-shutdown. |
| SDO (Pin 6) | Serial data output | 3-wire SPI/MICROWIRE-compatible output; 12-bit result shifted MSB-first on SCK falling edge. |
| SCK (Pin 7) | Serial clock input | Master-controlled clock up to 20MHz (H-grade); synchronizes data transfer and defines timing margins. |
| VCC (Pin 8) | Positive supply | Single 4.75V–5.25V supply; requires local 1µF bypass to GND; powers both analog and digital sections. |
Key Features
| Feature | Design Value |
|---|---|
| True differential analog input | Rejects common-mode noise on IN+/IN– pair, enabling robust measurement in electrically noisy environments. |
| Auto-shutdown between conversions | Reduces average supply current to ~1nA during idle periods, critical for ultra-low-power sensor nodes. |
| Adjustable reference input (1V–5V) | Allows full-scale scaling down to 1V, eliminating need for external op-amp gain stages in low-voltage signal chains. |
| Guaranteed operation to +85°C | Validated performance across industrial temperature range, supporting deployment in non-climate-controlled enclosures. |
| MSOP-8 package with 0.65mm pitch | Enables compact PCB layouts while maintaining manufacturability and thermal performance (θJA = 210°C/W). |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitoring units measuring temperature, pressure, and humidity over extended field deployments. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs from MEMS sensors and thermistors with 12-bit resolution and low quiescent current. Use Value: 1nA shutdown current extends battery life to multi-year intervals; differential input rejects EMI from nearby motors or RF sources. |
Use Scenario: DIN-rail mounted condition monitoring modules acquiring vibration and current signatures from factory machinery. IC Role / Device Role / Timing Role: High-fidelity front-end ADC capturing transient waveforms at 250ksps for FFT-based fault analysis. Use Value: 72dB SNR and ±1 LSB INL ensure accurate amplitude and harmonic content capture; 125kHz full linear bandwidth preserves signal integrity. |
| Medical Wearables | Isolated Remote Acquisition |
Use Scenario: Compact ECG or pulse oximetry patches requiring miniaturized, low-power signal conditioning. IC Role / Device Role / Timing Role: Signal-chain ADC interfacing with low-noise instrumentation amplifiers and driving low-power microcontrollers via SPI. Use Value: MSOP-8 footprint minimizes board area; 850µA active current enables continuous sampling without thermal throttling. |
Use Scenario: Distributed sensor networks using opto-isolated or transformer-coupled serial links to acquire analog data from hazardous zones. IC Role / Device Role / Timing Role: Isolated-side ADC converting sensor outputs before transmitting digitized data across galvanic barrier. Use Value: Single-supply 5V operation simplifies isolated power design; 3-wire interface reduces isolation channel count versus parallel bus alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, serial-output ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1864CMS8#PBF | 16-bit resolution, same 250ksps rate, identical MSOP-8 package and pinout, but higher supply current (1.3mA typ). | Used where higher resolution outweighs power penalty; not drop-in due to different code width and timing margins. | Select LTC1864CMS8#PBF only when ENOB > 12-bit is required and system can accommodate higher power and revised firmware handling. |
| ADS7822U | 12-bit, 250ksps, SO-8 package, 2.7–5.25V supply, but no differential input-only pseudo-differential with internal MUX. | Targeted at cost-sensitive, single-ended designs; lacks true differential rejection and adjustable reference flexibility. | Choose ADS7822U for simpler, lower-cost implementations where common-mode noise is negligible and reference is fixed at VCC. |
Compared with LTC1860IMS8#PBF, LTC1864CMS8#PBF trades power efficiency for resolution, while ADS7822U sacrifices differential input integrity and reference programmability for broader supply range and lower unit cost-neither is pin-compatible nor functionally interchangeable without hardware or firmware revision.
Availability
LTC1860IMS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and medical wearables requiring stable component supply, guaranteed industrial temperature operation, and long-term production continuity.
Supply support for LTC1860IMS8#PBF 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 acquired Linear Technology in 2017 and maintains its precision analog product lines, including high-performance data converters, with global manufacturing and quality systems certified to ISO 9001 and IATF 16949.
The LTC1860IMS8#PBF belongs to Linear's µPower SAR ADC family, designed specifically for space-constrained, battery-operated systems demanding high resolution, low standby current, and robust analog input architecture.
FAQ
What is the operating temperature range of the LTC1860IMS8#PBF?
The LTC1860IMS8#PBF is specified for operation from –40°C to +85°C (I-grade), validated across this full industrial temperature range for parameters including INL, SNR, and supply current. This rating is confirmed in the "Order Information" table and "Operating Temperature Range" section of the datasheet, and applies specifically to the IMS8#PBF variant.
Does the LTC1860IMS8#PBF support true differential input?
Yes, the LTC1860IMS8#PBF supports true differential input via dedicated IN+ and IN– pins. The transfer function measures the voltage difference (IN+ – IN–), delivering a zero code at 0V differential and full scale at VREF – 1LSB. This is explicitly defined in the "Analog Inputs" section and functional block diagram, distinguishing it from pseudo-differential or single-ended architectures.
Can the LTC1860IMS8#PBF operate with a 1V reference voltage?
Yes, the LTC1860IMS8#PBF supports reference voltages from 1V to 5V on the VREF pin, enabling full-scale spans as low as 1V. This is stated in the "Reference Input" section and confirmed in the "Recommended Operating Conditions" table, allowing direct digitization of low-amplitude sensor outputs without external gain.
What is the maximum clock frequency supported by the LTC1860IMS8#PBF?
The LTC1860IMS8#PBF supports a maximum SCK frequency of 20MHz for H-grade parts; for the I-grade LTC1860IMS8#PBF, the maximum is 16.7MHz. This value is specified in the "Recommended Operating Conditions" table under fSCK and is tied to the device grade, not ambient temperature alone.
How does the auto-shutdown feature work on the LTC1860IMS8#PBF?
The LTC1860IMS8#PBF automatically enters ultra-low-power shutdown (1nA typical) when the CONV pin remains high after conversion completion. A falling edge on CONV re-enables the SDO output for data readout. This behavior is documented in the "Features" list, "LTC1860 OPERATION" section, and timing diagrams, and is intrinsic to the part's internal bias and clock control logic.
LTC1860IMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- 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:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1860IMS8#PBF FAQ
1.How can I place an order for LTC1860IMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1860IMS8#PBF 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 LTC1860IMS8#PBF reliable?
The price and inventory of LTC1860IMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1860IMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1860IMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1860IMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1860IMS8#PBF?
LTC1860IMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1860IMS8#PBF 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 LTC1860IMS8#PBF?
For technical support, including LTC1860IMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1860IMS8#PBF requirements.
6.How does Aetrix verify that LTC1860IMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1860IMS8#PBF 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 LTC1860IMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1860IMS8#PBF?
All LTC1860IMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1860IMS8#PBF, 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 LTC1860IMS8#PBF part is unused and in its original packaging.
Return procedure for LTC1860IMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1860IMS8#PBF 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…
