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Analog Devices Inc. LTC1598LCG#TRPBF
- Part No.:
- LTC1598LCG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1598LCG#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,114
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Product details
Overview
LTC1598LCG#TRPBF from Analog Devices (formerly Linear Technology) is an 8-channel, 12-bit micropower sampling ADC with integrated multiplexer, operating from a single 2.7V–3.6V supply and drawing only 160µA typical supply current at 10.5ksps. It features separate MUXOUT/ADCIN pins for flexible signal conditioning, auto-shutdown to 1nA between conversions, and SPI/MICROWIRE-compatible 4-wire serial interface. It is used in battery-operated remote data acquisition systems requiring high-resolution analog sensing with ultra-low power.
For engineers reviewing the LTC1598LCG#TRPBF datasheet, LTC1598LCG#TRPBF pinout, LTC1598LCG#TRPBF application, or LTC1598LCG#TRPBF equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative parts - all grounded in the official Linear Technology LTC1594L/LTC1598L datasheet (15948lfb).
Technical Context
The LTC1598LCG#TRPBF integrates an 8-channel analog multiplexer, a 12-bit switched-capacitor successive-approximation ADC, sample-and-hold, and a synchronous half-duplex serial interface. Its dual chip select architecture (CSMUX and CSADC) enables independent control of multiplexer channel selection and ADC conversion timing, supporting up to 20ksps when optimized.
It supports ratiometric operation or external reference inputs from 1.5V to VCC + 0.05V, accepts analog inputs from –0.05V to VCC + 0.05V, and guarantees ±3/4 LSB max DNL and ±3 LSB max INL over temperature. The MUXOUT/ADCIN loop allows insertion of external gain or filtering stages without per-channel circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - delivers 4096 discrete output levels for precise sensor digitization. |
| Sampling Rate | 10.5 ksps maximum - supports real-time monitoring of fast-changing industrial or biomedical signals. |
| Supply Current | 160 µA typical at 10.5 ksps; drops to 1 nA in auto-shutdown - enables multi-year battery life in portable sensors. |
| Differential Nonlinearity | ±3/4 LSB max - ensures monotonic transfer function critical for closed-loop control feedback accuracy. |
| Reference Input Range | 1.5 V to VCC + 0.05 V - permits use of low-voltage references (e.g., 1.5V, 2.048V, 2.5V) to match sensor output spans. |
| Analog Input Range | –0.05 V to VCC + 0.05 V - accommodates small negative offsets or floating common-mode voltages without level-shifting. |
| Serial Interface | 4-wire SPI/MICROWIRE-compatible - interoperates with standard microcontroller peripherals without protocol translation. |
Pinout & Package
The LTC1598LCG#TRPBF is housed in a 24-pin plastic SSOP (Small Outline Package) with 0.635 mm pitch, specified for operation from 0°C to 70°C (commercial grade). Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 20–24, 1–3) | Analog multiplexer inputs | Eight independent analog input channels; selected via 3-bit address on DIN with EN bit. |
| MUXOUT (Pin 18) | Multiplexer output | Drives selected channel voltage to ADCIN; forms configurable signal conditioning loop. |
| ADCIN (Pin 17) | ADC positive input | Accepts conditioned signal from MUXOUT; high-impedance input minimizes loading. |
| COM (Pin 8) | ADC negative input / reference return | Serves as common-mode reference point for differential measurement against ADCIN. |
| VREF (Pin 16) | External reference input | Defines full-scale range; supports 1.5V–3.65V references for flexible span configuration. |
| CSMUX (Pins 6, 13) | Multiplexer chip select | Enables MUX address latching on rising edge; must be tied to CSADC for standard operation. |
| CSADC (Pin 10) | ADC chip select | Triggers sampling and conversion when pulled low; powers down ADC when high. |
| CLK (Pins 5, 12, 14) | Serial clock input | Synchronizes both MUX addressing and ADC data transfer; max 200 kHz at 2.7V. |
| DIN (Pins 7, 14) | Serial data input | Receives 4-bit channel address (EN + D2:D0); supports 3-wire mode when tied to DOUT. |
| DOUT (Pin 11) | Serial data output | Outputs 12-bit LSB-first conversion result after null bit; tri-states when CSADC is high. |
| VCC (Pins 11, 15, 16, 19) | Power supply | Single 2.7V–3.6V supply; multiple pins reduce IR drop and improve PSRR. |
| GND (Pins 4, 9) | Analog ground | Must connect directly to low-noise analog ground plane; separates digital noise from ADC core. |
Key Features
| Feature | Design Value |
|---|---|
| Separate MUX and ADC controls | Independent CSMUX/CSADC enables channel pre-selection for burst-mode sampling at up to 20ksps. |
| MUXOUT/ADCIN loop | Allows insertion of external PGA or anti-alias filter in shared path - eliminates per-channel op-amp cost and layout area. |
| Auto shutdown to 1nA | Eliminates need for external power gating; reduces average current by >99.9% during idle intervals. |
| Ratiometric operation support | Enables direct connection to resistive sensors (e.g., RTDs, potentiometers) without precision voltage references. |
| Low-voltage 1.5V full-scale capability | Permits direct interfacing with low-output transducers (e.g., thermocouples with cold-junction compensation amps). |
| 3-wire serial interface option | DIN/DOUT tie-down reduces MCU GPIO count and simplifies isolation barrier implementation. |
Applications
| Battery Monitoring | Remote Data Acquisition |
|---|---|
|
Use Scenario: Measuring individual cell voltages in multi-cell Li-ion battery packs for state-of-charge estimation. IC Role / Device Role / Timing Role: 8-channel ADC sequentially samples each cell's voltage referenced to pack ground, using COM pin for common-mode rejection. Use Value: 12-bit resolution enables detection of <1mV changes across 0–4.2V range; 160µA active current extends runtime in always-on BMS modules. |
Use Scenario: Environmental sensor node collecting temperature, humidity, and pressure data in unpowered field locations. IC Role / Device Role / Timing Role: Interfaces with multiple analog-output sensors via CH0–CH7; initiates conversion only during scheduled wake-up intervals. Use Value: 1nA shutdown current enables >5-year battery life on coin cells; SPI compatibility simplifies integration with low-power MCUs like MSP430. |
| Isolated Data Acquisition | Pen Screen Digitizing |
|
Use Scenario: Industrial PLC analog input module with galvanic isolation between field-side sensors and controller-side logic. IC Role / Device Role / Timing Role: ADC resides on isolated field side; serial data transmitted across optocoupler or digital isolator using 3-wire mode. Use Value: 4-wire (or 3-wire) interface avoids complex isolation of parallel buses; low power minimizes isolated-side heat generation. |
Use Scenario: Resistive touch screen controller measuring X/Y electrode voltages in handheld devices. IC Role / Device Role / Timing Role: Rapidly sequences through four analog channels (X+, X−, Y+, Y−) to compute touch position coordinates. Use Value: 10.5ksps sampling supports >100Hz touch reporting rate; MUXOUT/ADCIN loop allows on-chip averaging or filtering before digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-channel, 12-bit, micropower ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7957IRHBT | 12-bit, 8-channel SAR ADC with 1MSPS max rate; requires 5V supply or level-shifted I/O; no auto-shutdown below 10µA. | Higher speed suits motor control feedback; unsuitable for sub-µA battery-critical designs. | Select if sampling rate >100ksps is required and system can accommodate higher power and 5V interface. |
| MAX11131ETE+ | 12-bit, 8-channel SAR ADC with 500ksps rate; 2.7–3.6V supply; 350µA active current; SPI-only interface. | Higher noise floor (70dB SNR vs 68dB) and no MUXOUT/ADCIN loop limits signal conditioning flexibility. | Choose when faster throughput is needed and external PGA/filtering is implemented upstream of the ADC. |
Compared with ADS7957IRHBT and MAX11131ETE+, the LTC1598LCG#TRPBF uniquely combines sub-µA shutdown, MUXOUT/ADCIN signal conditioning flexibility, and guaranteed ±3/4 LSB DNL - making it optimal for ultra-low-power, space-constrained, and precision-sensing applications where per-channel analog front-end cost must be minimized.
Availability
LTC1598LCG#TRPBF is available at Aetrix Electronics and suitable for battery monitoring, remote data acquisition, and isolated industrial sensing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1598LCG#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, formed through the acquisition of Linear Technology in 2017.
The LTC1594L/LTC1598L family was designed by Linear Technology specifically for ultra-low-power, high-precision data acquisition in portable and remote instrumentation - emphasizing micropower operation, flexible multiplexing, and robust serial interfacing.
FAQ
What is the operating temperature range for the LTC1598LCG#TRPBF?
The LTC1598LCG#TRPBF is specified for commercial-grade operation from 0°C to 70°C. This is indicated by the "C" in the part number suffix and confirmed in the "PACKAGE/ORDER INFORMATION" section of the datasheet, where LTC1598LCG denotes the 0°C to 70°C grade. The "G" suffix refers to the SSOP package variant, not temperature grade.
Does the LTC1598LCG#TRPBF support true differential input measurements?
No, the LTC1598LCG#TRPBF does not support true differential input measurements. It is configured for unipolar operation only, with COM serving as the negative reference input for single-ended measurements relative to ADCIN. The transfer curve and specifications confirm unipolar-only behavior, and no differential input mode or dedicated IN+ / IN− pins are provided.
Can the LTC1598LCG#TRPBF operate with a 1.5V reference voltage?
Yes, the LTC1598LCG#TRPBF supports reference voltages as low as 1.5V, as explicitly stated in the "REF Input Range" specification: 1.5V to VCC + 0.05V. Using a 1.5V reference yields a full-scale range of 0–1.5V and a resolution of 366µV (1.5V / 4096), enabling direct digitization of low-output sensors without gain amplification.
How does the break-before-make interval affect channel switching in the LTC1598LCG#TRPBF?
The LTC1598LCG#TRPBF implements a guaranteed 125–350 ns break-before-make interval (tOPEN) during channel switching. This ensures all channels disconnect completely before the next selected channel connects - preventing momentary short-circuits between channels and eliminating crosstalk in high-impedance sensor networks, which is critical for accurate multi-sensor measurements.
Is the LTC1598LCG#TRPBF pin-compatible with the LTC1594L series?
No, the LTC1598LCG#TRPBF is not pin-compatible with the LTC1594L series. The LTC1598LCG#TRPBF uses a 24-pin SSOP package with dedicated pins for eight analog inputs (CH0–CH7), while the LTC1594L uses a 16-pin SO package supporting only four channels (CH0–CH3). Their pin counts, layouts, and signal assignments are fundamentally different and non-interchangeable.
LTC1598LCG#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:
- -
LTC1598LCG#TRPBF FAQ
1.How can I place an order for LTC1598LCG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1598LCG#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 LTC1598LCG#TRPBF reliable?
The price and inventory of LTC1598LCG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1598LCG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1598LCG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1598LCG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1598LCG#TRPBF?
LTC1598LCG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1598LCG#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 LTC1598LCG#TRPBF?
For technical support, including LTC1598LCG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1598LCG#TRPBF requirements.
6.How does Aetrix verify that LTC1598LCG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1598LCG#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 LTC1598LCG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1598LCG#TRPBF?
All LTC1598LCG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1598LCG#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 LTC1598LCG#TRPBF part is unused and in its original packaging.
Return procedure for LTC1598LCG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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