My Inquiry
My Account
Analog Devices Inc. LTC1594LIS#TRPBF
- Part No.:
- LTC1594LIS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1594LIS#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,753
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1594LIS#TRPBF from Analog Devices (formerly Linear Technology) is a 3V, 12-bit, 4-channel micropower sampling ADC with integrated multiplexer and serial interface. It delivers 10.5ksps sampling rate, ±3/4 LSB DNL, 160µA typical supply current during conversion, and auto-shutdown to 1nA between conversions. It operates from 2.7V to 3.6V and supports ratiometric or external reference configurations - ideal for battery-powered sensor data acquisition in industrial monitoring systems.
For engineers reviewing the LTC1594LIS#TRPBF datasheet, LTC1594LIS#TRPBF pinout, LTC1594LIS#TRPBF application, or LTC1594LIS#TRPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance over –40°C to +85°C, separate MUX/ADC control via CSMUX and CSADC, SPI/MICROWIRE/QSPI-compatible 4-wire serial interface, and direct high-impedance analog input capability down to 1.5V full-scale span.
Technical Context
The LTC1594LIS#TRPBF integrates a switched-capacitor successive-approximation ADC with on-chip sample-and-hold and a 4-channel analog multiplexer. Its architecture enables independent control of multiplexer channel selection (via CSMUX/DIN) and ADC conversion timing (via CSADC), supporting flexible sequencing such as single-channel multi-conversion bursts at up to 20ksps.
It features a dedicated MUXOUT-to-ADCIN loop for external signal conditioning (e.g., PGA or antialiasing), supports unipolar transfer function only, and maintains specified linearity (±3/4 LSB DNL) and dynamic performance (68dB S/(N+D), 80dB SFDR) across its full operating temperature range (–40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit, guaranteed no missing codes - ensures monotonicity and full code coverage for precision measurement. |
| Sampling Rate | 10.5ksps maximum - supports real-time monitoring of fast-changing sensor signals like temperature transients or vibration. |
| Supply Current | 160µA typ during conversion; 1nA typ in auto-shutdown - enables multi-year operation on coin-cell batteries. |
| Differential Nonlinearity | ±3/4 LSB max - preserves accuracy in closed-loop control applications requiring sub-0.1% error budgets. |
| Operating Voltage | 2.7V to 3.6V - compatible with standard 3V Li-ion, Li-SOCl₂, and regulated 3.3V rails without level-shifting. |
| Reference Input Range | 1.5V to VCC + 0.05V - allows use of low-voltage references (e.g., 1.5V, 2.048V, 2.5V) to maximize resolution for low-span sensors. |
| Serial Interface | 4-wire synchronous half-duplex (CS, CLK, DIN, DOUT); SPI/MICROWIRE/QSPI-compatible - simplifies host MCU integration with minimal GPIO usage. |
Pinout & Package
Package: 16-pin narrow SO (SO-16), RoHS-compliant, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 (Pins 1–4) | Analog multiplexer inputs | Accept 0V to VCC + 0.05V signals; high-impedance (≤1µA leakage) enables direct connection to resistive sensors or thermistors. |
| ADCIN (Pin 5) | Positive ADC input | Connects to MUXOUT for standard operation; accepts conditioned or filtered signals when used with external PGA/filter in MUXOUT–ADCIN loop. |
| VREF (Pin 6) | Reference voltage input | Defines full-scale range; supports external references or ratiometric use with supply-sensed references. |
| COM (Pin 7) | Negative ADC input | Common-mode reference point; must be low-noise and tied to clean analog ground for accurate differential measurements. |
| GND (Pin 8) | Analog ground | Primary return path for analog circuitry; requires dedicated low-impedance plane to minimize noise coupling. |
| CSADC (Pin 9) | ADC chip select | Active-low enable for ADC sampling/conversion; powers down ADC and tristates DOUT when high. |
| CSMUX (Pin 10) | MUX chip select | Active-low enable for multiplexer channel selection; decoupled from CSADC to allow independent MUX/ADC control. |
| CLK (Pin 11) | Serial clock input | Synchronizes DIN data capture and DOUT data output; supports up to 200kHz clock frequency at 2.7V. |
| DIN (Pin 12) | Digital input | Receives 4-bit channel address (EN + D2:D0); latched on rising CLK edge when CS is high. |
| DOUT (Pin 13) | Digital output | Outputs 12-bit conversion result LSB-first; tri-stated when CSADC is high. |
| VCC (Pin 14) | Power supply | 3V supply input; requires local 1µF bypass capacitor to GND for stable ADC operation. |
| NC (Pins 15–16) | No connection | Not internally bonded; must remain unconnected per datasheet guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Separate MUX and ADC controls | Enables channel selection once followed by multiple conversions - reduces host overhead and increases effective throughput to 20ksps. |
| MUXOUT/ADCIN loop | Allows insertion of external gain stages or filters between multiplexer and ADC - eliminates per-channel signal conditioning hardware. |
| Auto shutdown to 1nA | Minimizes quiescent power between samples - critical for energy harvesting and long-life battery systems. |
| High-impedance analog inputs | Supports direct connection to high-Z sources (e.g., thermocouples, RTDs, pH electrodes) without buffer amplifiers. |
| Reduced full-scale span (1.5V min) | Delivers 366µV LSB resolution at 1.5V reference - improves sensitivity for low-output transducers. |
Applications
| Battery Monitoring | Remote Sensor Node |
|---|---|
Use Scenario: Measuring cell voltages and pack temperature in portable medical devices or IoT asset trackers. IC Role / Device Role / Timing Role: 4-channel ADC digitizes battery voltage, current sense, thermistor, and auxiliary sensor outputs sequentially. Use Value: Micropower operation extends runtime; 12-bit resolution enables precise state-of-charge estimation within ±0.5%. | Use Scenario: Environmental sensing (temperature, humidity, pressure) in wireless field-deployed nodes powered by solar + supercapacitor. IC Role / Device Role / Timing Role: Sampling multiple analog sensors at 1–10Hz intervals, then transmitting data via LoRaWAN or NB-IoT. Use Value: 1nA shutdown current minimizes self-discharge; SPI interface simplifies MCU firmware and reduces BOM count. |
| Industrial Temperature Measurement | Isolated Data Acquisition |
Use Scenario: Cold-junction compensation and thermocouple linearization in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Digitizing thermocouple voltage referenced to cold-junction sensor, with ratiometric scaling against internal reference. Use Value: Guaranteed ±3/4 LSB DNL ensures repeatability across temperature; 2.7V minimum supply supports wide-input isolated DC-DC rails. | Use Scenario: High-voltage motor drive feedback where analog signals cross isolation barriers via optocouplers or digital isolators. IC Role / Device Role / Timing Role: Local ADC near motor phase current shunts, with serial data transmitted across isolator to main controller. Use Value: Low EMI 4-wire interface reduces isolator channel count; 160µA active current limits heat generation in confined enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, micropower, multiplexed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200ksps, 2.7–5.25V supply, SPI-only interface, no integrated MUX | Lower resolution and no on-chip multiplexer - requires external analog switch for multi-channel use. | Select when higher speed and lower cost outweigh resolution and integration needs. |
| MAX11100ETE+ | 12-bit, 100ksps, 2.7–3.6V, internal 2.048V reference, no separate MUX/ADC controls | Fixed internal reference and coupled MUX/ADC timing - less flexible for burst-mode or isolated MUX control. | Select when simplified interface and built-in reference reduce design complexity, and 100ksps is sufficient. |
Compared with ADS7822U and MAX11100ETE+, the LTC1594LIS#TRPBF uniquely combines guaranteed 12-bit linearity, true 4-channel integration with independent MUX/ADC enables, and industry-leading 1nA shutdown current - making it optimal for ultra-low-power, high-accuracy, multi-sensor embedded systems where board space and battery life are constrained.
Availability
LTC1594LIS#TRPBF is available at Aetrix Electronics and suitable for battery monitoring, remote sensor nodes, industrial temperature measurement, and isolated data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1594LIS#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1594LIS#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, designed specifically for ultra-low-power, high-accuracy sensor interfacing in space- and energy-constrained embedded systems.
FAQ
What is the operating temperature range of the LTC1594LIS#TRPBF?
The LTC1594LIS#TRPBF is specified for operation from –40°C to +85°C. This industrial-grade temperature range is confirmed in the "ORDER PART NUMBER" table and "RECOMMENDED OPERATING CONDITIONS" section of the datasheet, where the "LIS" suffix explicitly denotes the –40°C to +85°C grade. All key specifications-including DNL, gain error, and supply current-are guaranteed across this full range.
Does the LTC1594LIS#TRPBF support SPI mode with CPOL=0 and CPHA=0?
Yes, the LTC1594LIS#TRPBF supports SPI mode 0 (CPOL=0, CPHA=0). The datasheet states compatibility with QSPI, SPI, and MICROWIRE interfaces, and Figure 1 ("Operating Sequence") shows data sampled on the rising CLK edge and output on the falling CLK edge - consistent with standard SPI mode 0 timing. The device uses a 4-wire interface (CS, CLK, DIN, DOUT) and does not support 3-wire shared-DIN/DOUT in SPI mode without explicit host control of direction.
Can the LTC1594LIS#TRPBF operate with a 1.5V reference voltage?
Yes, the LTC1594LIS#TRPBF supports reference voltages as low as 1.5V. The "CONVERTER AND MULTIPLEXER CHARACTERISTICS" table specifies "REF Input Range: 1.5V to VCC + 0.05V", and the "TYPICAL PERFORMANCE CHARACTERISTICS" include plots showing linearity, gain, and offset variation vs. reference voltage down to 1.5V. At 1.5V reference, the LSB size is 366µV, enabling high-resolution measurement of low-output sensors.
How does the break-before-make interval work on the LTC1594LIS#TRPBF?
The LTC1594LIS#TRPBF implements a guaranteed break-before-make interval (tOPEN = 125–350ns) during channel switching. As described in the "APPLICATIONS INFORMATION" section, when CS falls, all channels are simultaneously disabled after tOFF delay, then the newly selected channel is enabled after tON delay - ensuring no overlap between channels. This prevents crosstalk and transient injection in multi-channel sampling, especially critical for high-impedance sensor sources.
Is the LTC1594LIS#TRPBF pin-compatible with the LTC1594CS#TRPBF?
No, the LTC1594LIS#TRPBF is not pin-compatible with the LTC1594CS#TRPBF. Both are 16-pin SO packages, but the "L" suffix denotes the low-voltage (2.7–3.6V) version with optimized micropower architecture, while the non-"L" version (e.g., LTC1594CS) is a 5V-part variant. Their absolute maximum ratings, supply current profiles, and reference input ranges differ significantly - direct substitution would risk under-voltage operation or specification violation.
LTC1594LIS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 16.8k
- Number of Inputs:
- 4
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1594LIS#TRPBF FAQ
1.How can I place an order for LTC1594LIS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1594LIS#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 LTC1594LIS#TRPBF reliable?
The price and inventory of LTC1594LIS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1594LIS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1594LIS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1594LIS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1594LIS#TRPBF?
LTC1594LIS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1594LIS#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 LTC1594LIS#TRPBF?
For technical support, including LTC1594LIS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1594LIS#TRPBF requirements.
6.How does Aetrix verify that LTC1594LIS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1594LIS#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 LTC1594LIS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1594LIS#TRPBF?
All LTC1594LIS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1594LIS#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 LTC1594LIS#TRPBF part is unused and in its original packaging.
Return procedure for LTC1594LIS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1594LIS#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…
