My Inquiry
My Account
Analog Devices Inc. LTC2305HMS#TRPBF
- Part No.:
- LTC2305HMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2305HMS#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2305HMS#TRPBF from Analog Devices (acquired Linear Technology) is a 2-channel, 12-bit successive approximation ADC with I²C-compatible serial interface, internal 2.5V reference and fully differential sample-and-hold. It delivers 73.5dB SNR, ±1 LSB integral nonlinearity, and 14ksps throughput at 1.5mW power - enabling precision analog sensing in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2305HMS#TRPBF datasheet, LTC2305HMS#TRPBF pinout, LTC2305HMS#TRPBF application, or LTC2305HMS#TRPBF equivalent, key selection criteria include its –40°C to 125°C extended temperature rating, software-selectable unipolar/bipolar input ranges, channel-to-channel isolation of –109dB, and guaranteed no missing codes across full operating range.
Technical Context
The LTC2305HMS#TRPBF implements a 12-bit SAR architecture with internal capacitive DAC and differential comparator, using an internal conversion clock for deterministic 1.3μs conversion time. Its analog input multiplexer supports single-ended (CH0/CH1 vs GND) or differential (CH0+/CH1–) configurations via 6-bit DIN word programming.
It integrates a buffered 4.096V reference output (REFCOMP) and 2.5V reference output (VREF), both requiring external bypassing (10μF + 0.1μF for REFCOMP; 2.2μF for VREF). The I²C interface operates up to 400kHz with nine selectable slave addresses plus global sync, and supports sleep mode (35μW) and nap mode (225μA) for dynamic power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes - ensures monotonic transfer function for closed-loop control accuracy. |
| Throughput Rate | 14ksps - supports real-time sampling of motor current or vibration signals up to 7kHz Nyquist bandwidth. |
| SNR | 73.5dB at 1kHz - enables >11.9 effective bits for high-fidelity sensor digitization in noisy environments. |
| INL | ±1 LSB max - limits end-point error to ±0.025% of full-scale, critical for calibrated measurement systems. |
| Supply Voltage | 4.75V to 5.25V - compatible with standard 5V industrial rails and tolerant of ±5% regulation variation. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive, industrial PLC, and high-temperature process control use. |
| Power (14ksps) | 1.5mW - allows battery operation for >1 year in low-duty-cycle remote sensors with 100mAh capacity. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), exposed pad grounded, θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 9) | Ground reference | Three dedicated ground pins minimize ground bounce; all must connect to solid ground plane. |
| SDA (Pin 2) | I²C bidirectional data line | Open-drain output during read (requires pull-up); high-impedance input during write; supports multi-master bus. |
| SCL (Pin 3) | I²C clock input | Slave-only timing interface; data latched on rising edge, shifted out on falling edge. |
| CH0 (Pin 5) | Channel 0 analog input | Configurable as single-ended (vs GND) or differential (with CH1); 55pF input capacitance requires RC filter design. |
| CH1 (Pin 6) | Channel 1 analog input | Paired with CH0 for differential mode; channel-to-channel isolation >109dB prevents crosstalk in dual-sensor systems. |
| VREF (Pin 7) | 2.5V internal reference output | Bypass with ≥2.2μF ceramic; can be overdriven by external 2.5V source for improved stability. |
| REFCOMP (Pin 8) | 4.096V reference buffer output | Bypass with 10μF + 0.1μF ceramics; disabled when VREF grounded - enables external reference substitution. |
| VDD (Pin 10) | 5V analog supply | Must be decoupled with 10μF + 0.1μF ceramics; powers analog core and reference circuitry. |
| AD1 / AD0 (Pins 11, 12) | I²C address select | Three-state inputs (LOW/HIGH/floating) set one of nine slave addresses - enables multi-device I²C bus topology. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input mode | Single-ended or differential per channel via 6-bit DIN word - eliminates external MUX hardware for flexible sensor interfacing. |
| Internal reference with buffer | Integrated 2.5V VREF and 4.096V REFCOMP reduce BOM count and PCB area - no external reference IC required. |
| Low-power sleep modes | 35μW sleep current and 225μA nap mode enable energy harvesting compatibility and ultra-low-quiescent IoT nodes. |
| High-temp grade packaging | H-grade MSOP rated –40°C to 125°C - supports deployment in engine control units, solar inverters, and factory automation without derating. |
| I²C address flexibility | Nine programmable slave addresses plus global sync - simplifies firmware development in multi-ADC systems like modular DAQ cards. |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring temperature, pressure, and flow in chemical plant PLC I/O modules. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing 4–20mA loop transmitters and thermocouple amplifiers with simultaneous sampling. Use Value: ±1 LSB INL and 73.5dB SNR ensure <0.025% measurement uncertainty across 125°C ambient range. | Use Scenario: Sampling phase currents and DC bus voltage in servo drives and BLDC inverters. IC Role / Device Role / Timing Role: High-speed acquisition of motor current feedback and voltage sensing with channel isolation >109dB. Use Value: 14ksps throughput supports 7kHz control loop bandwidth; differential CH0/CH1 configuration rejects common-mode noise from PWM switching. |
| Battery-Operated Instrumentation | Power Supply Monitoring |
Use Scenario: Portable multimeters and handheld environmental sensors powered by coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Low-power ADC converting sensor outputs (e.g., humidity, gas concentration) with sleep mode activation between readings. Use Value: 35μW sleep current extends battery life to >2 years in 1-sample-per-second duty cycle; internal reference eliminates calibration drift. | Use Scenario: Real-time monitoring of rail voltages (12V, 5V, 3.3V) and current in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: Simultaneous digitization of multiple supply rails using CH0/CH1 with unipolar 0–4.096V range. Use Value: Software-selectable unipolar mode enables direct connection to resistor-divider outputs; 12-bit resolution detects <10mV changes on 12V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, SPI interface, no internal reference, 200ksps max, SO-8 package | Lower resolution and different interface require firmware and layout changes; lacks temperature grade support | Select only for cost-sensitive, lower-accuracy applications where SPI is preferred and external reference is acceptable. |
| MAX11612EEE+ | 12-bit, I²C, 9.6ksps, internal 2.048V reference, –40°C to 85°C, 12-pin TDFN | Lower throughput and narrower temperature range; smaller 3mm × 3mm package but no exposed pad thermal path | Choose when board space is more critical than thermal performance and 125°C operation is not required. |
Compared with ADS7822U and MAX11612EEE+, the LTC2305HMS#TRPBF provides superior SNR (73.5dB vs ≤70dB), extended temperature capability (–40°C to 125°C), and integrated 4.096V reference buffer - making it optimal for high-reliability industrial sensing where accuracy, thermal robustness, and system integration matter most.
Availability
LTC2305HMS#TRPBF is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and battery-operated instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LTC2305HMS#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2305HMS#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for space-constrained, low-power, high-accuracy data acquisition in harsh thermal environments - emphasizing integration, reliability, and ease of system-level validation.
FAQ
What is the maximum operating temperature for the LTC2305HMS#TRPBF?
The LTC2305HMS#TRPBF is rated for continuous operation from –40°C to 125°C, validated per the H-grade specification in the official datasheet. This extended temperature range is achieved through enhanced process characterization and packaging, making LTC2305HMS#TRPBF suitable for under-hood automotive, industrial motor drives, and high-temperature process monitoring where standard commercial or industrial grade ADCs would fail.
Does the LTC2305HMS#TRPBF require external reference components?
No, the LTC2305HMS#TRPBF integrates both a 2.5V reference (VREF) and a buffered 4.096V reference (REFCOMP), eliminating the need for external reference ICs. However, proper bypassing is mandatory: VREF requires ≥2.2μF ceramic, and REFCOMP requires parallel 10μF + 0.1μF ceramics. External references may be used by grounding VREF and driving REFCOMP - but this is optional, not required, for LTC2305HMS#TRPBF operation.
How many I²C addresses does the LTC2305HMS#TRPBF support?
The LTC2305HMS#TRPBF supports nine unique I²C slave addresses via the AD1 and AD0 pins, each configurable as LOW, HIGH, or floating (three states per pin → 3² = 9 combinations). Additionally, it responds to a global address for synchronized wake-up or broadcast commands - enabling coordinated multi-device sampling without individual addressing overhead in LTC2305HMS#TRPBF-based systems.
Can the LTC2305HMS#TRPBF perform simultaneous sampling on both channels?
No, the LTC2305HMS#TRPBF uses a single SAR ADC core with an internal multiplexer; CH0 and CH1 are sampled sequentially, not simultaneously. However, its 1.3μs conversion time and fast acquisition (240ns) enable near-simultaneous sampling with minimal inter-channel skew - sufficient for most motor current and voltage monitoring applications where phase alignment within ~100ns is acceptable. True simultaneous sampling requires dual-core ADCs outside the LTC2305HMS#TRPBF family.
What is the power consumption of the LTC2305HMS#TRPBF at 1ksps?
At 1ksps throughput, the LTC2305HMS#TRPBF draws 300μA from a 5V supply, equating to 1.5mW total power. This value is explicitly specified in the datasheet under "Power Requirements" and includes active conversion, internal reference, and I²C interface circuitry. In nap mode (SLP = 0, conversion complete), current drops to 225μA; in sleep mode (SLP = 1), it falls to 35μW - confirming LTC2305HMS#TRPBF's suitability for ultra-low-power sensing nodes.
LTC2305HMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 14k
- Number of Inputs:
- 2
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Selectable Address
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 12-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2305HMS#TRPBF FAQ
1.How can I place an order for LTC2305HMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2305HMS#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 LTC2305HMS#TRPBF reliable?
The price and inventory of LTC2305HMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2305HMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2305HMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2305HMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2305HMS#TRPBF?
LTC2305HMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2305HMS#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 LTC2305HMS#TRPBF?
For technical support, including LTC2305HMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2305HMS#TRPBF requirements.
6.How does Aetrix verify that LTC2305HMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2305HMS#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 LTC2305HMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2305HMS#TRPBF?
All LTC2305HMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2305HMS#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 LTC2305HMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2305HMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2305HMS#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…
