LTC2360CTS8 - 12-Bit 100ksps SAR ADC, TSOT-23-8 | Analog Devices
MPN: LTC2360CTS8 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.18 | $6.18 |
| 10 | $5.62 | $56.20 |
| 100 | $4.95 | $495.00 |
| 500 | $4.38 | $2,190.00 |
| 1,000 | $3.92 | $3,920.00 |
| 2,500 | $3.45 | $8,625.00 |
LTC2360CTS8 Overview
A SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm: each clock cycle the internal capacitive DAC is charged from the input and then iteratively switched against a reference to resolve one additional bit. SAR ADCs are valued for low latency (one conversion in N clocks), deterministic behavior, and excellent DC accuracy with no pipeline delay, making them the natural choice for multiplexed data-acquisition channels, industrial control loops, and precision instrumentation. The LTC2360 belongs to the broader ADC IC family (SAR -> ADC -> data converter -> signal chain -> analog IC) and is widely used where board area and power are constrained.
Key features include 100 ksps sampling rate, single 3 V supply operation with 0.5 mA active supply current, automatic Nap-mode power-down that scales current with throughput, an external reference input for system-rail ratio-metric conversions, and a compact TSOT-23-8 footprint measuring roughly 2.9 mm x 1.6 mm. The device uses a simple SPI/QSPI/MICROWIRE-compatible serial interface, so it can communicate with virtually any microcontroller or DSP with as few as three digital lines. These traits let designers drop the part into densely populated PCBs without dedicated analog rails.
The architecture combines a precision input sampling network, a charge-redistribution SAR core, and an internal conversion clock; the wide external-reference range (1 V to VDD) lets the dynamic range track the system reference rather than the supply, simplifying calibration in ratiometric designs. Nap mode and shutdown reduce IDD at low throughput, which is critical for battery-powered sensors that must idle most of the time and only wake for a quick burst of conversions.
Typical applications include portable instrumentation, battery-powered sensor nodes, industrial process-control analog front ends, optical-module monitoring, and general-purpose data-acquisition boards. The TSOT-23 footprint is especially attractive for handheld medical devices and consumer audio accessories where PCB real estate is at a premium and the SPI interface simplifies integration with low-cost Cortex-M0 microcontrollers.
When designing with this part, place the supply bypass capacitor (typically 10 µF tantalum in parallel with 0.1 µF ceramic) within a few millimeters of the VDD pin and route REF analog ground back to a single system star ground. Use short, symmetric analog traces to the analog input, and avoid running the serial clock near the analog input trace to prevent digital-to-analog coupling.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes drawn from the LTC2360 family datasheet to provide practical context that is not always present on a single distributor listing.
Drop-in alternatives for LTC2360CTS8 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LTC2360CTS8 (same form factor and footprint) — differing in Package, Resolution, RoHS Status, Architecture, Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTC2361CTS8#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2362CTS8#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2360CS6#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2312HTS8-12#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2314HTS8-14#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2313HTS8-14#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
ADS7816E/250
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2360CTS8 Maximum Ratings & Electrical Characteristics
| Part Number | LTC2360CTS8 |
| Manufacturer | Analog Devices (formerly Linear Technology) |
| Series | LTC2360 |
| Converter Type | SAR (Successive Approximation Register) ADC |
| Resolution | 12 bit |
| Number of Channels | 1 |
| Sampling Rate | 100 ksps |
| Input Type | Single-ended, pseudo-differential option |
| Supply Voltage (VDD) | 2.35 V to 3.6 V |
| Supply Current (active) | 0.5 mA typical at 100 ksps |
| Reference | External, 1 V to VDD |
| Interface | SPI / QSPI / MICROWIRE-compatible serial |
| Package | TSOT-23-8 (TS8) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0 °C to +70 °C (commercial) |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Data Interface | Serial (SPI) |
| Architecture | Charge-redistribution SAR core |
LTC2360CTS8 Pin Configuration
| Pin 1 | OUT — Serial data output (SPI SDO equivalent) |
| Pin 2 | NC — Not connected (per datasheet) |
| Pin 3 | VDD — Power supply input (2.35 V to 3.6 V) |
| Pin 4 | GND — Ground return for digital I/O |
| Pin 5 | REF — External reference input (1 V to VDD) |
| Pin 6 | GND — Analog ground - tie to single system star ground |
| Pin 7 | ADCIN — Positive analog input (single-ended or + differential) |
| Pin 8 | -IN — Negative analog input for pseudo-differential mode |
| Pin 9 | EP — Exposed thermal pad - solder to ground plane for dissipation |
Typical Applications
LTC2360CTS8 is suitable for 6 applications: Portable Instrumentation and Battery Data Loggers, Industrial Process-Control Sensor Front-Ends, Optical Module Monitoring and Bias Control, Medical Sensor Patches and Wearables, Consumer Audio Accessories and USB Headsets, General Data-Acquisition Boards.
Portable Instrumentation and Battery Data Loggers
The LTC2360CTS8's 0.5 mA active supply current and Nap-mode power-down that scales IDD linearly with throughput make it an excellent fit for handheld digital multimeters and battery-powered data loggers. At a 1 ksps throughput it draws microamps, enabling multi-month coin-cell runtimes while its 100 ksps ceiling supports high-resolution spot captures during active measurement. The TSOT-23-8 package conserves PCB real estate in slim handheld enclosures.
Recommended
Industrial Process-Control Sensor Front-Ends
With its 12-bit resolution, 100 ksps sampling, and pseudo-differential analog input structure, the LTC2360CTS8 digitizes 4-20 mA loop voltages, RTD bridge outputs, and thermistor dividers in PLC and DCS modules. The external reference input lets designers ratio-metric the ADC against the excitation source for superior ratiometric accuracy, while the 2.35-3.6 V supply range accepts 24 V bus-derived LDO rails common in industrial backplanes.
Recommended
Optical Module Monitoring and Bias Control
SFP/SFP+ transceivers and DWDM line cards require low-speed auxiliary monitoring of laser bias current, TEC current, and received optical power - exactly the use case where the LTC2360CTS8 excels. Its single 3 V supply rails can be derived from the host 3.3 V bus, the SPI interface daisy-chains multiple ADCs to a single FPGA, and the 100 ksps rate comfortably tracks TEC control loops in the 1 kHz range.
Recommended
Medical Sensor Patches and Wearables
Continuous-glucose monitors, pulse-oximeter fingers, and ECG patch electrodes need an ADC that draws microamps while idle and wakes quickly for a conversion. The LTC2360CTS8's Nap-mode shutdown combines with its tiny TSOT-23-8 to deliver multi-day adhesive-patch battery life, while its 12 bits are sufficient for bio-impedance and SpO2 photodiode readings when paired with a precision transimpedance amp.
Recommended
Consumer Audio Accessories and USB Headsets
USB headsets, gaming controllers, and smart speakers often need an ADC to read microphone bias, button presses, or battery gauge voltages. The LTC2360CTS8 fits because of its small TSOT-23-8 footprint, low current at idle, and direct SPI hookup to Cortex-M0/M4 controllers used in these products. The external reference can be tied to a regulated 2.5 V rail for repeatable button-press detection across temperature.
Recommended
General Data-Acquisition Boards
Multi-channel DAQ boards built around an FPGA or microcontroller can stack multiple LTC2360CTS8 devices on independent CS lines to add economical 12-bit channels without a larger BGA ADC. The serial interface uses only three digital lines so the FPGA's pin overhead stays low, and the device's low latency (one conversion on demand) simplifies deterministic timing in NI/student-grade measurement instruments.
Recommended
Recommended Products Summary
Engineering reference data for LTC2360CTS8 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC2361CTS8 | LTC2362CTS8 | LTC2312HTS8-12 | LTC2314HTS8-14 | ADS7816E |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Package | TSOT-23-8 | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same | SOT-23-8 - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit | 12 bit |
| Sampling Rate | 100 ksps | 250 ksps | 500 ksps | 100 ksps | 200 ksps | 200 ksps |
| Supply Voltage | 2.35 V to 3.6 V | 2.35 V to 3.6 V | 2.35 V to 3.6 V | 2.35 V to 3.6 V | 2.35 V to 3.6 V | 2.7 V to 3.6 V |
| Serial Interface | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI | SPI | SPI (SCK idle high) |
| Reference Input | 1 V to VDD (external) | 1 V to VDD (external) | 1 V to VDD (external) | 2.5 V to VDD (external) | 2.5 V to VDD (external) | Internal (2.5 V typ.) |
| Operating Temperature | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Key Differentiators
- Lowest-power Nap-mode scaling within the LTC2360 family (vs LTC2362CTS8)
- Wider reference range than LTC231x family (vs LTC2312HTS8-12)
- Pin-compatible 14-bit upgrade path (vs LTC2360CS6 (6-pin SOT-23))
- Compact TSOT-23-8 package (vs ADS7816E (SOT-23-8 with internal ref))
Design Notes
Estimate: power dissipation on a single 3.3 V supply at 0.5 mA active current is roughly P = 3.3 V x 0.5 mA = 1.65 mW. The TSOT-23-8 package dissipates this easily without active cooling, but the exposed pad (Pin 9) MUST be soldered to a contiguous ground copper pour that is connected to analog ground - this both reduces thermal resistance and provides the signal-return star point for the part.
Place a 10 µF tantalum (or low-ESR ceramic such as X5R/X7R 10 µF 10 V) in parallel with a 0.1 µF ceramic bypass as close as possible to the VDD pin (within 2-3 mm). Use a separate analog ground island connected to the system ground at one point only. This isolates digital switching return currents from the ADC's quiet reference input and prevents a LSB-level increase in noise floor.
Although the LTC2360's TSOT-23-8 footprint looks like a 6-pin SOT-23 (LTC2360CS6), the pinout differs - the 8-pin part has GND on pin 4 and 6 (separate digital/analog grounds on the same pin count), and the 6-pin variant omits the NC and -IN pins. Substituting one for the other without re-spinning the layout will mis-pin REF/VCC and result in no conversion. Always match by both MPN and pin count.
Keep SCK trace short (< 50 mm) and route OUT on an internal PCB layer with adjacent ground return. If the microcontroller's SPI bus is shared with Flash memory or other peripherals, add a series 33-100 ohm terminator adjacent to the ADC's OUT pin to dampen reflections on long buses. Sample on the rising edge of SCK per the datasheet timing diagram - sampling on the falling edge risks metastability and dropped bits.
Compliance Information
TRMPBF suffix confirms RoHS-compliant lead-free finish per ADI/Linear Technology Material Declaration Data Sheet (MDDS). AEC-Q100 testing not performed - contact ADI for -I (industrial -40 to +85 °C) or automotive-qualified variants.
