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Analog Devices Inc. LTC2389CLX-16#PBF
- Part No.:
- LTC2389CLX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2389CLX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:115
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Product details
Overview
LTC2389CLX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 2.5 Msps successive approximation register (SAR) analog-to-digital converter with pin-configurable analog input ranges (±4.096 V fully differential, 0–4.096 V pseudo-differential unipolar, ±2.048 V pseudo-differential bipolar), 96.0 dB SNR (fully differential), ±1 LSB INL (max), and integrated 4.096 V reference. It operates from a single 5 V supply and targets high-speed, wide-dynamic-range data acquisition in medical imaging and industrial instrumentation.
For engineers reviewing the LTC2389CLX-16#PBF datasheet, LTC2389CLX-16#PBF pinout, LTC2389CLX-16#PBF application, or LTC2389CLX-16#PBF equivalent, key selection criteria include its no-cycle-latency parallel/serial interface, guaranteed 16-bit no-missing-codes performance, internal reference accuracy (±0.5% initial, ±20 ppm/°C max), 48-pin LQFP package, and operation across 0°C to 70°C.
Technical Context
The LTC2389CLX-16#PBF employs a precision SAR architecture with an internal oscillator that sets conversion time (245–310 ns), eliminating external timing dependencies. Its pin-configurable input range selection-via OB/2C and PD/FD pins-enables direct interfacing with fully differential, pseudo-differential unipolar, or pseudo-differential bipolar signal chains without external level-shifting circuitry.
It integrates a buffered 4.096 V reference with 2.3 kΩ output impedance and supports dual-supply operation: VDD = 4.75–5.25 V for core logic and OVDD = 1.71–5.25 V for I/O, enabling compatibility with 1.8 V, 2.5 V, 3.3 V, or 5 V digital systems. Power dissipation is 162.5 mW at full throughput, with nap/sleep modes reducing current to ≤250 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes over full temperature range. |
| Sampling Rate | 2.5 Msps - enables real-time capture of signals up to 1.25 MHz (Nyquist), suitable for FFT-based spectral analysis. |
| SNR (fully diff) | 96.0 dB typical at fIN = 2 kHz - corresponds to ~15.9 effective bits, critical for high-fidelity sensor digitization. |
| INL (max) | ±1 LSB - ensures accurate end-point linearity for calibration-sensitive applications like ATE and process control. |
| Reference Voltage | 4.096 V internal - provides exact scaling for 16-bit codes (1 LSB = 62.5 µV), eliminating external reference design burden. |
| Supply Voltages | VDD = 4.75–5.25 V; OVDD = 1.71–5.25 V - allows flexible I/O voltage selection independent of core supply. |
| Power Dissipation | 162.5 mW at 2.5 Msps - low thermal load enables dense PCB layouts without forced cooling. |
Pinout & Package
Package: 48-lead 7 mm × 7 mm plastic LQFP (LX package), RoHS-compliant, operating temperature range 0°C to 70°C.
| 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 noise immunity in high-speed sampling. |
| VDD (Pins 2, 3, 19, 40, 45, 46, 47) | Core power supply | Seven VDD pins require local 0.1 µF + 10 µF ceramic decoupling per pin group to maintain stable 5 V rail under dynamic load. |
| IN+, IN– (Pins 42, 43) | Differential analog inputs | Accept ±4.096 V, 0–4.096 V, or ±2.048 V ranges depending on OB/2C and PD/FD states; input capacitance 45 pF (sample mode). |
| OB/2C (Pin 6), PD/FD (Pin 30) | Input range & output format control | Joint configuration selects analog input range and output coding (offset binary or two's complement); no external resistors needed. |
| MODE0 (Pin 4), A1 (Pin 8) | Data interface mode selector | Set parallel (16-/8-bit) or serial (SDI/SDO/SCK) output; A1 further selects upper/lower byte in parallel mode. |
| REFOUT (Pin 47), REFIN (Pin 46), REFSENSE (Pin 45) | Internal reference interface | REFOUT delivers 4.096 V; REFIN accepts external reference; REFSENSE enables ratiometric measurement with external sensors. |
| CNVST (Pin 37) | Conversion start trigger | Edge-triggered; tCNVSTL ≥ 20 ns low pulse width required; initiates acquisition and conversion with no pipeline delay. |
| BUSY (Pin 36) | Conversion status indicator | Active-high signal asserts within 13 ns of CNVST↓ and deasserts after conversion completes (tCONV ≤ 310 ns). |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Immediate data availability after BUSY deassertion - eliminates FIFO buffering and simplifies real-time control loop timing. |
| Pin-configurable input range | Three analog input configurations selectable via two logic inputs - reduces BOM count and board space vs. discrete range-switching circuits. |
| Integrated reference buffer | Drives external circuitry (e.g., sensor excitation) without gain/phase error - avoids need for external op-amp buffer stage. |
| 1.8 V to 5 V I/O compatibility | OVDD supply independence allows direct connection to FPGA/ASIC I/O banks without level translators - lowers system cost and complexity. |
| Guaranteed operation to 70°C | Specified performance maintained across commercial temperature range - validated for industrial environments without derating. |
Applications
| Medical Ultrasound Beamforming | High-Speed Industrial DAQ |
|---|---|
Use Scenario: Digitizing echo return signals from phased-array transducers at multi-MHz rates for real-time beam synthesis. IC Role / Device Role / Timing Role: Primary ADC capturing 16-bit samples at 2.5 Msps with <310 ns conversion time and zero pipeline latency. Use Value: 96 dB SNR preserves weak echo amplitude resolution; pin-configurable ±4.096 V range matches transducer receiver output swing without attenuation. |
Use Scenario: Simultaneous sampling of multiple sensor channels (strain gauges, thermocouples, accelerometers) in automated test equipment. IC Role / Device Role / Timing Role: High-precision front-end ADC with integrated 4.096 V reference ensuring consistent scaling across channels. Use Value: ±1 LSB INL and no missing codes guarantee traceable metrology-grade measurements; 48-pin LQFP enables compact multi-channel PCB layout. |
| Portable Spectrum Analyzers | Motor Drive Current Sensing |
Use Scenario: Real-time RF signal analysis using 32k-point FFT at 2.5 Msps sampling rate to resolve narrowband interference. IC Role / Device Role / Timing Role: High-SNR ADC feeding FPGA-based FFT engine; serial interface reduces pin count for compact handheld form factor. Use Value: 96 dB SNR and –116 dB THD enable >100 dB spurious-free dynamic range; internal oscillator relieves FPGA clock management burden. |
Use Scenario: Isolated phase-current measurement in three-phase inverters, requiring fast, precise sampling synchronized to PWM edges. IC Role / Device Role / Timing Role: Isolated ADC interface (with external isolator) capturing motor current waveforms at switching frequencies up to 20 kHz. Use Value: 2.5 Msps throughput captures >100 samples per PWM period; 0–4.096 V unipolar range matches isolated amplifier output, minimizing signal chain components. |
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, 5 Msps, requires external reference and separate VIO supply; no pin-configurable input range. | Higher resolution but demands more complex power and reference design; lacks integrated range flexibility. | Select when 18-bit resolution and 5 Msps throughput outweigh added external component count and layout effort. |
| ADS8860IPWR | 16-bit, 1 Msps, internal reference (4.096 V), SPI-only interface, 3-V supply only (AVDD/DVDD = 2.7–3.6 V). | Lower speed and narrower supply range; no parallel interface or multi-range capability. | Select for lower-power, space-constrained 3-V systems where 1 Msps suffices and range flexibility is not required. |
Compared with AD7960BCPZ-RL7 and ADS8860IPWR, the LTC2389CLX-16#PBF uniquely combines 2.5 Msps speed, 16-bit no-missing-codes integrity, pin-selectable input ranges, and integrated reference in a single 5-V-supply device - reducing total system component count and simplifying layout for mid-speed precision DAQ.
Availability
LTC2389CLX-16#PBF is available at Aetrix Electronics and suitable for medical imaging systems, industrial process control instrumentation, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2389CLX-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2389 family was designed for high-speed, high-accuracy data acquisition in space- and power-constrained systems, emphasizing integration (reference, buffer, flexible interface), ease of use (no missing codes, pin-configurable ranges), and robustness across temperature.
FAQ
What is the maximum sampling rate of the LTC2389CLX-16#PBF?
The LTC2389CLX-16#PBF achieves a maximum sampling rate of 2.5 Msps in parallel output modes. In serial mode, the maximum rate is 2.0 Msps. This is enabled by a fixed 400 ns minimum conversion cycle time (tCYC), with conversion time (tCONV) ranging from 245 ns to 310 ns. The internal oscillator ensures timing consistency without external clock dependency.
Does the LTC2389CLX-16#PBF require an external reference?
No, the LTC2389CLX-16#PBF includes a precision internal 4.096 V reference with ±0.5% initial accuracy and ±20 ppm/°C maximum temperature coefficient. It can operate fully self-contained. However, the REFIN pin allows connection of an external reference (e.g., for improved stability or different voltage), and REFSENSE supports ratiometric measurements - both options are supported without hardware modification.
What analog input ranges does the LTC2389CLX-16#PBF support?
The LTC2389CLX-16#PBF supports three pin-configurable analog input ranges: ±4.096 V fully differential, 0 V to 4.096 V pseudo-differential unipolar, and ±2.048 V pseudo-differential bipolar. These are selected using the OB/2C and PD/FD pins. Each range maintains specified performance (e.g., 96.0 dB SNR for fully differential, 93.5 dB for bipolar) without external signal conditioning.
How does the LTC2389CLX-16#PBF handle power consumption during idle periods?
The LTC2389CLX-16#PBF offers two low-power states: nap mode (PD = GND) and sleep mode (PD = OVDD). In nap mode, power-down current is ≤250 µA; in sleep mode, it drops to ≤15 µA. Both modes retain register settings and reference bias, allowing wake-up in <1 µs. At full 2.5 Msps operation, total power dissipation is 162.5 mW (32.5 mA core + 1.6 mA I/O at 5 V).
Is the LTC2389CLX-16#PBF pin-compatible with other members of the LTC2389 family?
Yes, the LTC2389CLX-16#PBF shares identical 48-pin LQFP pinout with other LTC2389-16 variants (e.g., LTC2389ILX-16#PBF) and is pin-compatible with the 18-bit LTC2389-18 family in all shared pins. MODE1, A0, and reserved pins are tied low in 16-bit operation per datasheet guidance, ensuring mechanical and electrical interoperability across temperature grades and bit-width variants.
LTC2389CLX-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2389CLX-16#PBF FAQ
1.How can I place an order for LTC2389CLX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2389CLX-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 LTC2389CLX-16#PBF reliable?
The price and inventory of LTC2389CLX-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 LTC2389CLX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2389CLX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2389CLX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2389CLX-16#PBF?
LTC2389CLX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2389CLX-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 LTC2389CLX-16#PBF?
For technical support, including LTC2389CLX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2389CLX-16#PBF requirements.
6.How does Aetrix verify that LTC2389CLX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2389CLX-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 LTC2389CLX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2389CLX-16#PBF?
All LTC2389CLX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2389CLX-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 LTC2389CLX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2389CLX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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