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Analog Devices Inc. LTC1598CG#TRPBF
- Part No.:
- LTC1598CG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1598CG#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 24SSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC1598CG#TRPBF from Analog Devices (formerly Linear Technology) is an 8-channel, 12-bit micropower sampling ADC with integrated multiplexer, serial I/O interface, and auto-shutdown capability. It operates on a single 5V supply, draws 320μA typical supply current during conversion at 16.8ksps, and powers down to 1nA between conversions. Its high-impedance analog inputs, 1.5V–5V reference range, and separate MUXOUT/ADCIN pins enable direct sensor interfacing in battery-powered remote data acquisition systems.
For engineers reviewing the LTC1598CG#TRPBF datasheet, LTC1598CG#TRPBF pinout, LTC1598CG#TRPBF application, or LTC1598CG#TRPBF equivalent, key selection criteria include guaranteed ±3/4 LSB DNL, SPI/MICROWIRE/QSPI-compatible 4-wire serial interface, 24-pin SSOP package, 16.8ksps maximum sampling rate, and operation across 0°C to 70°C industrial temperature range.
Technical Context
The LTC1598CG#TRPBF integrates an 8-channel analog multiplexer, 12-bit switched-capacitor successive-approximation ADC, sample-and-hold, and synchronous serial interface - all on a single die. Its dual chip-select architecture (CSMUX and CSADC) allows independent control of multiplexer channel selection and ADC conversion timing, enabling optimized throughput up to 20ksps in multi-conversion sequences.
It supports ratiometric operation with external reference voltages from 1.5V to VCC + 0.05V, accepts analog inputs from –0.05V to VCC + 0.05V, and features break-before-make switching with 35–160ns tOPEN to prevent channel crosstalk. The MUXOUT/ADCIN loop permits external signal conditioning such as PGA or antialias filtering before digitization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - ensures monotonic transfer function for precision measurement applications. |
| Differential Nonlinearity | ±3/4 LSB max - guarantees monotonicity and supports accurate linear interpolation in sensor calibration. |
| Sampling Rate | 16.8 ksps max - enables real-time monitoring of fast-changing analog signals like motor currents or vibration. |
| Supply Current | 320 μA typ during conversion; 1 nA in auto-shutdown - extends battery life in portable instrumentation. |
| Reference Range | 1.5 V to VCC + 0.05 V - allows flexible scaling for low-voltage sensors without external amplification. |
| Serial Interface | 4-wire SPI/MICROWIRE/QSPI compatible - simplifies host MCU integration with standard peripheral drivers. |
| Operating Temperature | 0°C to 70°C - qualified for industrial embedded systems where ambient conditions exceed consumer-grade limits. |
Pinout & Package
Package: 24-pin Plastic SSOP (G package), 0.150" wide body, JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH4 (Pins 20–24) | Analog multiplexer input | Five of eight analog input channels; CH0–CH4 are routed to internal MUX; CH5–CH7 are on Pins 1–3. |
| CH5–CH7 (Pins 1–3) | Analog multiplexer input | Remaining three analog input channels; full 8-channel selection supported via 3-bit address. |
| MUXOUT (Pin 18) | Multiplexer output | Drives selected analog channel to external circuitry or directly to ADCIN - enables external gain/filtering. |
| ADCIN (Pin 17) | ADC positive input | Accepts conditioned signal from MUXOUT; tied internally to MUXOUT for basic operation. |
| COM (Pin 8) | ADC negative input | Common-mode reference for differential measurement; must be low-noise and referenced to GND. |
| VREF (Pin 16) | Reference voltage input | Sets full-scale range; supports external references from 1.5V to 5.5V for ratiometric or absolute measurements. |
| CSMUX (Pins 6, 13) | Multiplexer chip select | Controls MUX channel selection independently; allows pre-selecting channel before conversion trigger. |
| CSADC (Pin 10) | ADC chip select | Triggers sampling and conversion; powers down ADC and tri-states DOUT when high. |
| DIN (Pins 7, 14) | Serial data input | Receives 4-bit channel address (EN + D2:D0); multiple DIN pins support parallel routing flexibility. |
| DOUT (Pin 11) | Serial data output | Shifts out 12-bit conversion result LSB-first; tri-stated when CSADC is high. |
| CLK (Pins 5, 12, 14) | Serial clock input | Synchronizes both MUX addressing and ADC data transfer; 320 kHz typical for 16.8 ksps operation. |
| VCC (Pins 11, 15, 16, 19) | Power supply | Single 4.5–5.5 V supply; multiple pins reduce IR drop and improve PSRR in noisy environments. |
| GND (Pins 4, 9) | Analog ground | Must connect directly to low-impedance analog ground plane to minimize noise coupling into ADC core. |
| NC (Pins 12, 13) | No connection | Not bonded; must remain unconnected to avoid parasitic coupling or ESD path issues. |
Key Features
| Feature | Design Value |
|---|---|
| Separate MUX and ADC controls | Enables channel pre-selection and burst conversion modes - increases effective throughput to 20 ksps. |
| Break-before-make switching | 35–160 ns tOPEN prevents transient coupling between channels during switching - critical for high-accuracy multi-sensor systems. |
| MUXOUT/ADCIN loop | Allows insertion of external programmable gain amplifier or RC antialias filter - eliminates per-channel signal conditioning hardware. |
| Low-power serial interface | Supports 3-wire operation (DIN/DOUT shared) - reduces MCU GPIO count and PCB routing complexity in space-constrained designs. |
| Wide reference voltage range | 1.5 V to VCC + 0.05 V - accommodates low-voltage sensors (e.g., thermocouples, RTDs) without level-shifting circuitry. |
Applications
| Battery-Operated Remote Sensors | Isolated Data Acquisition |
|---|---|
Use Scenario: Wireless environmental monitoring node measuring temperature, humidity, and CO₂ using multiple analog sensors powered by coin-cell battery. IC Role / Device Role / Timing Role: LTC1598CG#TRPBF serves as the central 8-channel analog front-end, performing sequential sampling and digitization with automatic shutdown between readings. Use Value: 1nA shutdown current and 320μA active current extend battery life beyond 5 years while maintaining 12-bit resolution across all channels. | Use Scenario: Industrial PLC module acquiring analog signals from hazardous-area transmitters via opto-isolated serial link. IC Role / Device Role / Timing Role: LTC1598CG#TRPBF digitizes isolated analog inputs; its 4-wire SPI interface crosses isolation barrier using digital isolators. Use Value: Low EMI serial interface and rail-to-rail logic compatibility simplify isolated communication design without additional level shifters. |
| Precision Battery Monitoring | Temperature Measurement Systems |
Use Scenario: Multi-cell Li-ion battery pack management system measuring cell voltages and temperatures across 8 cells. IC Role / Device Role / Timing Role: LTC1598CG#TRPBF samples each cell voltage sequentially using internal MUX, referenced to common COM node. Use Value: ±3/4 LSB DNL and 12-bit resolution enable sub-1mV cell voltage detection - critical for state-of-charge estimation accuracy. | Use Scenario: Medical thermometer array with 8 thermistor or RTD probes requiring simultaneous calibration and linearization. IC Role / Device Role / Timing Role: LTC1598CG#TRPBF digitizes conditioned analog outputs from precision op-amp circuits driving each sensor. Use Value: MUXOUT/ADCIN loop allows shared external PGA to scale all thermistor outputs to full-scale range - reducing component count by 7×. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-channel, 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-channel, 12-bit SAR ADC; 200kSPS max; 2.7–5.25V supply; SPI-only interface; no separate MUX/ADC controls. | Higher speed but lacks break-before-make switching and MUXOUT/ADCIN loop - less suitable for precision multi-sensor systems with crosstalk sensitivity. | Select ADS7822U only when higher throughput (>16.8ksps) is required and external signal conditioning is not needed. |
| MAX11131ETE+ | 8-channel, 12-bit SAR ADC; 100kSPS max; 2.7–3.6V supply; SPI interface; integrated reference; no MUXOUT/ADCIN loop. | Lower supply voltage range and fixed internal reference limit flexibility in ratiometric or wide-span sensor applications. | Choose MAX11131ETE+ for compact 3.3V systems where board space is constrained and external reference is unnecessary. |
Compared with ADS7822U and MAX11131ETE+, the LTC1598CG#TRPBF uniquely supports independent MUX/ADC control, break-before-make switching, and external signal conditioning via MUXOUT/ADCIN - making it optimal for low-power, high-accuracy, multi-sensor industrial monitoring where channel integrity and design flexibility are critical.
Availability
LTC1598CG#TRPBF is available at Aetrix Electronics and suitable for battery-operated remote sensors, isolated data acquisition modules, and precision battery monitoring systems requiring stable component supply and long-term manufacturability.
Supply support for LTC1598CG#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 LTC1598CG#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for ultra-low-power, multi-channel sensor interfacing in space- and energy-constrained embedded systems.
FAQ
What is the operating temperature range of the LTC1598CG#TRPBF?
The LTC1598CG#TRPBF is specified for operation from 0°C to 70°C (industrial grade). This is confirmed by the "CG" suffix in the part number and documented in the Recommended Operating Conditions table of the datasheet. It is not rated for extended temperature ranges unless explicitly designated as IG (–40°C to 85°C).
Does the LTC1598CG#TRPBF support 3-wire SPI communication?
Yes, the LTC1598CG#TRPBF supports 3-wire SPI operation by tying DIN and DOUT together. The device automatically manages bus direction: it drives DOUT after CS falls and releases the line when CS rises, allowing a single bidirectional data line. This configuration requires the host MCU to switch the data pin between input and output modes.
What is the purpose of the MUXOUT and ADCIN pins on the LTC1598CG#TRPBF?
The MUXOUT and ADCIN pins form an external signal conditioning loop on the LTC1598CG#TRPBF. MUXOUT delivers the selected analog channel signal externally, allowing insertion of a PGA, filter, or level shifter before re-injection into ADCIN. This eliminates per-channel analog circuitry and enables cost-effective, flexible front-end design.
Can the LTC1598CG#TRPBF operate with a 3V supply?
No, the LTC1598CG#TRPBF is specified for 4.5V to 5.5V operation only. For 3V operation, Analog Devices offers the pin-compatible LTC1598L variant (e.g., LTC1598LG#TRPBF), which is explicitly characterized at 2.7V to 3.6V and carries the "L" suffix in its part number.
How does the auto-shutdown feature work on the LTC1598CG#TRPBF?
The LTC1598CG#TRPBF automatically enters ultra-low-power shutdown (1nA typical) whenever CSADC is high. During conversion, CSADC is pulled low to enable sampling and digitization. Between conversions, holding CSADC high disables bias circuits and places DOUT in high-impedance state - minimizing quiescent current without requiring software-controlled power sequencing.
LTC1598CG#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 16.8k
- Number of Inputs:
- 8
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 24-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1598CG#TRPBF FAQ
1.How can I place an order for LTC1598CG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1598CG#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 LTC1598CG#TRPBF reliable?
The price and inventory of LTC1598CG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1598CG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1598CG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1598CG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1598CG#TRPBF?
LTC1598CG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1598CG#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 LTC1598CG#TRPBF?
For technical support, including LTC1598CG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1598CG#TRPBF requirements.
6.How does Aetrix verify that LTC1598CG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1598CG#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 LTC1598CG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1598CG#TRPBF?
All LTC1598CG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1598CG#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 LTC1598CG#TRPBF part is unused and in its original packaging.
Return procedure for LTC1598CG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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