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Analog Devices Inc. LTC1598LIG#TRPBF
- Part No.:
- LTC1598LIG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1598LIG#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,861
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Product details
Overview
LTC1598LIG#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. It delivers ±3/4 LSB max DNL, 10.5 ksps sampling rate, and auto-shutdown to 1 nA between conversions. Its MUXOUT/ADCIN loop enables external signal conditioning for battery-powered remote data acquisition systems.
For engineers reviewing the LTC1598LIG#TRPBF datasheet, LTC1598LIG#TRPBF pinout, LTC1598LIG#TRPBF application, or LTC1598LIG#TRPBF equivalent, key selection criteria include guaranteed 2.7V operation, SPI/MICROWIRE/QSPI-compatible 4-wire serial interface, 8-channel analog input leakage ≤±200 nA, and full-temperature-range (–40°C to +85°C) performance validation.
Technical Context
The LTC1598LIG#TRPBF integrates an 8-channel analog multiplexer, 12-bit switched-capacitor successive approximation ADC, and sample-and-hold - all controlled via separate CSMUX and CSADC inputs. Its break-before-make channel switching (tOPEN = 125–350 ns) prevents transient coupling during channel changes.
It supports ratiometric operation or external reference (1.5V–VCC+0.05V), accepts analog inputs from –0.05V to VCC+0.05V, and achieves 68 dB SNR and 80 dB SFDR at 1 kHz. The MUXOUT/ADCIN loop allows insertion of PGA or antialiasing filters without per-channel circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - ensures monotonic transfer function for precision measurement. |
| Sampling Rate | 10.5 ksps maximum - supports real-time monitoring of fast-changing sensor signals. |
| Supply Current | 160 µA typ during conversion; drops to 1 nA in auto-shutdown - enables multi-year battery life in low-duty-cycle systems. |
| Differential Nonlinearity | ±3/4 LSB max - guarantees accurate code transitions across full scale for calibration-critical applications. |
| Reference Range | 1.5V to VCC + 0.05V - permits use of low-voltage references (e.g., 1.5V, 2.048V, 2.5V) while maintaining full 12-bit resolution. |
| Analog Input Range | –0.05V to VCC + 0.05V - accommodates small negative offsets and rail-to-rail sensing with 2.7V minimum supply. |
| Serial Interface | 4-wire synchronous half-duplex (CLK, CS, DIN, DOUT) - compatible with QSPI, SPI, and MICROWIRE controllers without protocol translation. |
Pinout & Package
The LTC1598LIG#TRPBF is housed in a 24-pin plastic SSOP (G package) with 0.635 mm pitch, rated for –40°C to +85°C operation (I-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 20–24, 1–3) | Analog multiplexer inputs | Eight independent high-impedance (≤±200 nA off-channel leakage) inputs selectable via 3-bit address. |
| MUXOUT (Pin 18) | Multiplexer output | Drives external signal conditioning (e.g., PGA, filter); must connect to ADCIN for standard operation. |
| ADCIN (Pin 17) | ADC positive input | Accepts conditioned signal from MUXOUT; 1 µA max input leakage ensures minimal loading on external circuitry. |
| COM (Pin 8) | ADC negative input / common-mode reference | Defines differential input reference point; requires low-noise grounding for optimal accuracy. |
| VREF (Pin 16) | External reference input | Sets full-scale range; high input resistance (2.7 MΩ when CS = VIH) minimizes reference load. |
| CSMUX / CSADC (Pins 6, 13, 10) | Independent chip select inputs | Enable separate control of multiplexer and ADC - allows one channel selection per multiple conversions to maximize throughput. |
| CLK (Pins 5, 12, 14) | Serial clock input | Synchronizes both MUX addressing and ADC result readout; supports up to 200 kHz clock frequency. |
| DIN (Pins 7, 14) | Serial data input | Receives 4-bit channel address (EN + D2:D0); DIN/DOUT may be tied together for 3-wire interface. |
| DOUT (Pin 11) | Serial data output | Outputs 12-bit LSB-first conversion result after null bit; three-states when CS 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-impedance analog ground plane to minimize noise coupling into sensitive analog paths. |
| NC (Pins 12, 13) | No connection | Not internally bonded - leave unconnected and unpopulated on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Separate MUX and ADC controls | Enables channel selection once for repeated conversions - increases effective sample rate up to 20 ksps. |
| MUXOUT/ADCIN signal conditioning loop | Allows shared PGA or antialiasing filter across all 8 channels - reduces BOM cost and board area vs. per-channel design. |
| Break-before-make channel switching | Eliminates crosstalk transients during channel changes - critical for high-fidelity multi-sensor acquisition. |
| 3-wire serial interface support | DIN/DOUT tie capability reduces MCU GPIO count and simplifies isolation barrier implementation. |
| Guaranteed operation down to 2.7V | Ensures reliable performance across full Li-ion battery discharge curve (3.0V → 2.7V) without brownout reset. |
Applications
| Remote Sensor Node | Battery Monitoring System |
|---|---|
Use Scenario: Wireless environmental sensor node measuring temperature, humidity, and pressure using 8 discrete analog sensors. IC Role / Device Role / Timing Role: 8-channel ADC digitizes sensor outputs sequentially; auto-shutdown minimizes average current draw between wake-up intervals. Use Value: 1 nA shutdown current extends coin-cell battery life beyond 5 years in low-duty-cycle deployments. | Use Scenario: Portable medical device monitoring cell voltage, current, and temperature across 8-series lithium cells. IC Role / Device Role / Timing Role: Simultaneous sampling of cell voltages referenced to common COM node; 12-bit resolution detects <366 µV changes. Use Value: ±3/4 LSB DNL ensures accurate state-of-charge estimation without per-cell calibration. |
| Isolated Industrial I/O Module | Pen-Input Digitizer |
Use Scenario: PLC analog input module with optocoupler-isolated serial interface communicating to host controller. IC Role / Device Role / Timing Role: ADC digitizes isolated field signals; 4-wire SPI compatibility enables direct connection to isolated digital isolators. Use Value: 3-wire mode (DIN/DOUT tied) reduces isolator channel count by 25%, lowering isolation component cost. | Use Scenario: Handheld tablet digitizing analog pen-tip position via resistive touch overlay with 8 electrode inputs. IC Role / Device Role / Timing Role: High-speed 8-channel scanning of X/Y electrode pairs; 10.5 ksps supports >100 Hz stylus tracking. Use Value: MUXOUT/ADCIN loop allows integration of programmable gain to accommodate varying touch pressure sensitivity. |
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 |
|---|---|---|---|
| ADS7957IRGER | 12-bit, 8-channel, SPI interface; 1 MSPS max sampling rate; 2.7V–5.25V supply; no auto-shutdown (1.5 mA active current) | Higher speed but 9,400× higher active current - unsuitable for battery operation | Select only when >100× faster sampling is required and power budget allows continuous operation. |
| MAX11131ATI+ | 12-bit, 8-channel, SPI interface; 500 ksps max; 2.7V–3.6V supply; 1.2 µA shutdown current | Similar micropower profile but lacks separate MUX/ADC controls and MUXOUT/ADCIN loop | Choose when simplified control architecture suffices and shared signal conditioning is not needed. |
Compared with ADS7957IRGER and MAX11131ATI+, the LTC1598LIG#TRPBF uniquely combines ultra-low 160 µA active current, 1 nA shutdown, and flexible MUXOUT/ADCIN signal conditioning - making it optimal for long-life, multi-sensor, battery-powered systems requiring per-channel analog processing.
Availability
LTC1598LIG#TRPBF is available at Aetrix Electronics and suitable for remote data acquisition, battery monitoring, and isolated industrial I/O requiring stable component supply across extended temperature ranges.
Supply support for LTC1598LIG#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 LTC1598LIG#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 for the LTC1598LIG#TRPBF?
The LTC1598LIG#TRPBF is specified for operation from –40°C to +85°C (Industrial grade). All key parameters - including DNL, gain error, offset error, and supply current - are guaranteed across this full range, as denoted by the "G" suffix in the datasheet specifications.
Does the LTC1598LIG#TRPBF support true differential input measurements?
No, the LTC1598LIG#TRPBF is unipolar-only and does not support true differential input mode. It measures each selected channel relative to the COM pin, which serves as the negative analog input reference. The transfer curve is permanently configured for unipolar operation (0V to VREF), as confirmed in the Applications Information section.
Can the LTC1598LIG#TRPBF operate with a 2.5V reference and 2.7V supply?
Yes, the LTC1598LIG#TRPBF supports VREF = 2.5V with VCC = 2.7V. The datasheet explicitly specifies 2.7V minimum supply and allows reference voltages from 1.5V to VCC + 0.05V. At these conditions, full 12-bit performance - including ±3/4 LSB DNL - is maintained.
How does the break-before-make interval affect channel switching in the LTC1598LIG#TRPBF?
The LTC1598LIG#TRPBF enforces a break-before-make interval (tOPEN = 125–350 ns) during channel switching. This ensures all channels disconnect completely before the next channel connects - eliminating transient coupling and crosstalk between adjacent inputs, which is essential for high-accuracy multi-sensor systems.
Is the LTC1598LIG#TRPBF pin-compatible with the LTC1594L series?
No, the LTC1598LIG#TRPBF is not pin-compatible with the LTC1594L series. The LTC1594L uses a 16-pin SO package with 4-channel routing, while the LTC1598LIG#TRPBF uses a 24-pin SSOP package with 8-channel routing and distinct pin assignments (e.g., CH4–CH7, dual CLK/CS pins). PCB layout must be redesigned for migration.
LTC1598LIG#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1598LIG#TRPBF FAQ
1.How can I place an order for LTC1598LIG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1598LIG#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 LTC1598LIG#TRPBF reliable?
The price and inventory of LTC1598LIG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1598LIG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1598LIG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1598LIG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1598LIG#TRPBF?
LTC1598LIG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1598LIG#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 LTC1598LIG#TRPBF?
For technical support, including LTC1598LIG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1598LIG#TRPBF requirements.
6.How does Aetrix verify that LTC1598LIG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1598LIG#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 LTC1598LIG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1598LIG#TRPBF?
All LTC1598LIG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1598LIG#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 LTC1598LIG#TRPBF part is unused and in its original packaging.
Return procedure for LTC1598LIG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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