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Analog Devices Inc. LTC2389ILX-16#PBF
- Part No.:
- LTC2389ILX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2389ILX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,573
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Product details
Overview
LTC2389ILX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 2.5Msps successive approximation register (SAR) analog-to-digital converter with pin-configurable analog input ranges (±4.096V fully differential, 0V–4.096V pseudo-differential unipolar, ±2.048V pseudo-differential bipolar), internal 4.096V reference (±20ppm/°C max), and 96.0dB SNR (fully differential). It operates from a single 5V supply, delivers no missing codes at 16 bits, and targets high-speed data acquisition in industrial process control and medical imaging systems.
For engineers reviewing the LTC2389ILX-16#PBF datasheet, LTC2389ILX-16#PBF pinout, LTC2389ILX-16#PBF application, or LTC2389ILX-16#PBF equivalent, key selection criteria include guaranteed operation to 85°C, ±1LSB INL (max), no pipeline delay, parallel/serial interface flexibility, and internal reference buffer enabling direct sensor interfacing without external level-shifting circuitry.
Technical Context
The LTC2389ILX-16#PBF implements a true SAR architecture with internal oscillator-based timing, eliminating external clock synchronization requirements. Its conversion time is fixed at 245–310ns, with zero cycle latency in parallel modes and no pipeline delay-enabling deterministic real-time sampling for closed-loop control.
Pin configuration via MODE0, OB/2C, and PD/FD selects between three analog input ranges and output data formats (offset binary/two's complement), while A0/A1 configure parallel bus segmentation. The device supports 1.8V–5V I/O voltages via separate OVDD rail, decoupling digital interface voltage from core VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full 65,536-code dynamic range with no missing codes across temperature. |
| Sampling Rate | 2.5Msps - enables real-time capture of signals up to 1.25MHz Nyquist bandwidth. |
| SNR | 96.0dB (fully differential) - translates to effective resolution of ~15.7 bits at 2kHz input. |
| INL | ±1LSB (max) - ensures monotonicity and accurate end-point linearity for precision measurement. |
| Reference | Internal 4.096V ±0.5% initial accuracy, ±20ppm/°C tempco - eliminates need for external reference and buffer in most applications. |
| Power | 162.5mW at 2.5Msps - achieves 65µW per sample, supporting thermally constrained high-density designs. |
| Temperature Range | –40°C to +85°C - qualified for industrial environments without derating. |
Pinout & Package
48-pin 7mm × 7mm plastic LQFP package (LX) with exposed thermal pad (Pin 49 = GND). Pin count and layout match industry-standard footprint for drop-in compatibility with other 48-lead LQFP ADCs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,17,20,35,41,44,48) | Ground reference | Multiple dedicated ground pins minimize ground bounce and improve PSRR in high-speed conversion. |
| VDD (Pins 2,3,19,40,45,46,47) | Core analog/digital supply | 7 independent 5V supply pins require local 0.1µF + 10µF ceramic decoupling per pin group. |
| OVDD (Pin 18) | I/O interface supply | 1.71V–5.25V rail powers all digital outputs and inputs, enabling mixed-voltage system interfacing. |
| IN+, IN– (Pins 42,43) | Differential analog inputs | Support ±4.096V fully differential mode; CMRR ≥70dB ensures rejection of common-mode noise. |
| REFOUT, REFIN, REFSENSE (Pins 38,39,40) | Reference interface | Internal 4.096V reference available at REFOUT; REFIN accepts external reference; REFSENSE enables ratiometric sensing. |
| CNVST (Pin 37) | Conversion start trigger | Edge-triggered sampling; tCNVSTH ≥200ns ensures reliable setup for 2.5Msps operation. |
| BUSY (Pin 36) | Conversion status indicator | Active-high signal asserts during conversion and deasserts 13ns after completion-enables precise timing coordination. |
| PD/FD (Pin 34) | Input range & format control | Combined with OB/2C, selects among three analog input ranges and output coding schemes (offset binary/two's complement). |
Key Features
| Feature | Design Value |
|---|---|
| Pin-configurable input range | Single hardware configuration supports ±4.096V, 0–4.096V, or ±2.048V inputs-eliminates redesign when signal chain topology changes. |
| No pipeline latency | Zero-cycle-latency parallel interface enables immediate readout after BUSY deassertion-critical for deterministic control loops. |
| Internal reference buffer | Integrated buffer drives external RC filters directly-removes need for discrete op-amp buffering in anti-aliasing networks. |
| Nap/sleep power-down | Reduces current to ≤250µA during idle periods-extends battery life in portable instrumentation and reduces thermal load in dense PCB layouts. |
| Parallel + serial interface | MODE0 pin selects between 16-bit parallel bus (D0–D15) or SPI-compatible serial interface (SDI/SDO/SCK)-maximizes host MCU flexibility. |
Applications
| Medical Imaging Signal Chain | Industrial Process Control DAQ |
|---|---|
|
Use Scenario: Digitizing CT/MRI detector front-end signals with wide dynamic range and low distortion. IC Role / Device Role / Timing Role: Primary high-speed ADC capturing analog sensor outputs with 96dB SNR and <1LSB INL for quantitative image reconstruction. Use Value: Enables 16-bit fidelity at 2.5Msps without external reference or driver amplifiers-reducing BOM count and board area in space-constrained scanner modules. |
Use Scenario: High-accuracy monitoring of pressure, temperature, and flow sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision SAR ADC with internal reference and ±1LSB INL ensuring traceable metrology-grade measurements across –40°C to +85°C. Use Value: Eliminates calibration drift from external references and supports direct connection to industrial sensors via configurable input ranges. |
| Automated Test Equipment (ATE) | High-Speed Instrumentation |
|
Use Scenario: Capturing transient waveforms during semiconductor device characterization with minimal dead time between samples. IC Role / Device Role / Timing Role: Low-latency ADC with no pipeline delay and deterministic 400ns conversion cycle-enabling tight trigger-to-acquisition timing. Use Value: Achieves 2.5Msps sustained throughput with zero missing codes, supporting FFT-based spectral analysis of fast transients. |
Use Scenario: Portable oscilloscopes and spectrum analyzers requiring high SNR, low power, and compact form factor. IC Role / Device Role / Timing Role: Core digitizer delivering 96dB SNR and 117dB SFDR for clean signal analysis up to 1.25MHz bandwidth. Use Value: Internal 4.096V reference and 162.5mW power dissipation enable battery-operated instruments with >8-hour runtime and calibrated accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7960BCPZ-RL7 | 18-bit, 5Msps, external reference only, no pin-configurable input range, requires 2.5V supply for core logic. | Higher resolution but lacks integrated reference and flexible input range-requires additional reference buffer and level-shifting circuitry. | Select when 18-bit resolution and 5Msps throughput outweigh added design complexity and cost of external support components. |
| ADS8860IPWR | 16-bit, 1Msps, internal reference (±10ppm/°C), SPI-only interface, 3V supply only, no parallel mode. | Lower speed and single-interface constraint limit use in real-time control; tighter tempco improves reference stability but lower throughput restricts bandwidth. | Select for lower-power, lower-cost applications where 1Msps is sufficient and SPI interface aligns with host processor architecture. |
Compared with AD7960BCPZ-RL7 and ADS8860IPWR, the LTC2389ILX-16#PBF uniquely combines 2.5Msps speed, pin-selectable input ranges, integrated reference with buffer, and dual parallel/serial interfaces-making it optimal for industrial DAQ systems requiring field-deployable flexibility without sacrificing precision or timing determinism.
Availability
LTC2389ILX-16#PBF is available at Aetrix Electronics and suitable for industrial process control, medical imaging equipment, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2389ILX-16#PBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2389 family was designed specifically for high-speed, high-accuracy data acquisition systems requiring low latency, flexible signal interfacing, and robust operation in harsh industrial environments.
FAQ
What is the operating temperature range for the LTC2389ILX-16#PBF?
The LTC2389ILX-16#PBF is rated for operation from –40°C to +85°C, making it suitable for industrial environments where ambient temperatures exceed commercial-grade limits. This grade is confirmed by the "I" suffix in the part number and validated across all electrical specifications in the datasheet's "l"-denoted parameters.
Does the LTC2389ILX-16#PBF require an external reference?
No, the LTC2389ILX-16#PBF includes a precision internal 4.096V reference with ±0.5% initial accuracy and ±20ppm/°C maximum temperature coefficient. External reference use is optional and supported via the REFIN pin, but the internal reference is fully functional and buffered for direct connection to anti-aliasing filters.
How does the pin configuration affect analog input range on the LTC2389ILX-16#PBF?
The LTC2389ILX-16#PBF uses OB/2C and PD/FD pins to select among three analog input ranges: fully differential (±4.096V), pseudo-differential unipolar (0V–4.096V), and pseudo-differential bipolar (±2.048V). These settings also determine output coding format (offset binary or two's complement), as defined in Table 2 of the datasheet.
What interface options does the LTC2389ILX-16#PBF support?
The LTC2389ILX-16#PBF supports both parallel and serial interfaces via the MODE0 pin. In MODE0 = 0, it provides a 16-bit parallel output (D0–D15); in MODE0 = 1, it operates as an SPI-compatible serial device with SDI, SDO, and SCK pins. Both modes share the same CNVST and BUSY timing behavior.
Is the LTC2389ILX-16#PBF pin-compatible with other members of the LTC2389 family?
Yes-the LTC2389ILX-16#PBF shares identical 48-pin LQFP pinout with other LTC2389-16 variants (e.g., LTC2389CLX-16#PBF, LTC2389HLX-16#PBF) and maintains pin compatibility with 18-bit versions (e.g., LTC2389-18) for MODE0, OB/2C, PD/FD, and data bus pins, enabling scalable design reuse across resolution grades.
LTC2389ILX-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 2.5M
- Number of Inputs:
- 1
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI, Parallel
- Configuration:
- 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 ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2389ILX-16#PBF FAQ
1.How can I place an order for LTC2389ILX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2389ILX-16#PBF 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 LTC2389ILX-16#PBF reliable?
The price and inventory of LTC2389ILX-16#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2389ILX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2389ILX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2389ILX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2389ILX-16#PBF?
LTC2389ILX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2389ILX-16#PBF 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 LTC2389ILX-16#PBF?
For technical support, including LTC2389ILX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2389ILX-16#PBF requirements.
6.How does Aetrix verify that LTC2389ILX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2389ILX-16#PBF 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 LTC2389ILX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2389ILX-16#PBF?
All LTC2389ILX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2389ILX-16#PBF, 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 LTC2389ILX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2389ILX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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