My Inquiry
My Account
Analog Devices Inc. LTC2377IDE-18#PBF
- Part No.:
- LTC2377IDE-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2377IDE-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,443
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2377IDE-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 500ksps successive approximation register (SAR) analog-to-digital converter optimized for high-precision, low-power data acquisition. It operates from a single 2.5V supply, features ±VREF fully differential input range (2.5V–5.1V reference), achieves 102dB SNR and ±1.75LSB INL max, and delivers no missing codes at full 18-bit resolution - ideal for medical imaging and portable instrumentation requiring high dynamic range and thermal robustness.
For engineers reviewing the LTC2377IDE-18#PBF datasheet, LTC2377IDE-18#PBF pinout, LTC2377IDE-18#PBF application, or LTC2377IDE-18#PBF equivalent, key selection criteria include guaranteed operation from –40°C to +85°C, digital gain compression (DGC) enabling single-supply amplifier drive, SPI-compatible daisy-chain interface, internal conversion clock, and 4mm × 3mm DFN package with exposed ground pad for thermal management.
Technical Context
The LTC2377IDE-18#PBF implements a charge redistribution capacitor DAC (CDAC) architecture with differential comparator and 18-bit successive approximation logic. Conversion is initiated by a CNV rising edge, with fixed 1.5µs conversion time and no pipeline latency - enabling deterministic timing in real-time control loops.
Its dual-supply design separates analog core (VDD = 2.5V) from digital I/O (OVDD = 1.71V–5.25V), supporting 1.8V/2.5V/3.3V/5V logic levels. The REF/DGC pin selects between full ±VREF input range (DGC disabled) or compressed 0.1×VREF to 0.9×VREF range (DGC enabled), directly impacting front-end amplifier biasing and power architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 distinct output codes with guaranteed no missing codes across temperature. |
| Sampling Rate | 500ksps - supports real-time capture of signals up to 250kHz Nyquist bandwidth without undersampling. |
| SNR | 102dB (typ, fIN = 2kHz, VREF = 5V) - enables >16.5 effective number of bits (ENOB) in high-fidelity measurement systems. |
| INL | ±1.75LSB (max) - ensures monotonicity and linearity critical for closed-loop control and calibration-critical instrumentation. |
| Power Dissipation | 6.8mW at 500ksps - allows battery-powered operation with <14µA average current per conversion cycle. |
| Digital Gain Compression | Enabled via REF/DGC = GND - maps zero/full-scale to 0.1×VREF/0.9×VREF, eliminating need for negative supply in driver amplifiers. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-environment embedded applications. |
| Reference Range | 2.5V to 5.1V - provides flexibility in system-level voltage scaling and noise budget allocation. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed thermal pad (Pin 17), rated for –40°C to +85°C operation. Exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog input pair | Accepts ±VREF fully differential signal; 45pF sampling capacitance and 40Ω switch RON define settling requirements for driving circuitry. |
| REF | Reference voltage input | Defines full-scale range; requires 47µF X5R ceramic decoupling close to pin for low-noise ADC performance. |
| REF/DGC | Reference/Digital Gain Compression control | Logic-low enables DGC mode (0.1–0.9×VREF range); logic-high disables DGC (±VREF range). |
| CNV | Convert trigger input | Rising-edge–initiated conversion; powers up ADC and starts acquisition phase with deterministic 1.5µs conversion time. |
| BUSY | Conversion status indicator | Active-high open-drain output signaling conversion in progress; used for timing synchronization or interrupt generation. |
| RDL/SDI | Serial bus enable / daisy-chain data input | Function depends on CHAIN pin state: enables SDO (CHAIN = low) or accepts serial input (CHAIN = high). |
| SDO | Serial data output | 2's complement 18-bit result shifted MSB-first on SCK rising edges; supports daisy-chain readout of multiple devices. |
| VDD | Analog core supply | 2.5V ±62.5mV supply; bypassed with 10µF ceramic capacitor to minimize analog noise coupling into conversion. |
| OVDD | Digital I/O supply | 1.71V–5.25V logic interface supply; sets VIH/VIL thresholds and drives SDO/SCK/RDL/SDI levels independently of VDD. |
| GND (Pins 3,6,10,16) | Analog/digital ground reference | Multiple dedicated ground pins reduce ground bounce; exposed pad (Pin 17) is mandatory ground connection for thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay, no cycle latency | Enables deterministic real-time response in closed-loop systems - conversion completes within fixed 1.5µs after CNV edge. |
| Digital Gain Compression (DGC) | Eliminates need for negative supply in input driver amplifiers by compressing full-scale range to 0.1–0.9×VREF, simplifying power architecture. |
| SPI-compatible daisy-chain mode | Allows synchronous readout of multiple LTC2377IDE-18#PBF devices using single SCK/SDO lines - reduces PCB routing complexity and host GPIO count. |
| Internal conversion clock | Removes external clock source dependency and jitter sensitivity, easing layout and improving SNR stability across temperature and supply variation. |
| Auto power-down between conversions | Reduces average power to 6.8µW at 500sps sample rate - extends battery life in intermittent-sampling applications like portable diagnostics. |
| Guaranteed operation to 85°C | Validated performance over full industrial temperature range without derating - suitable for enclosed enclosures or high-ambient environments. |
Applications
| Medical Imaging Signal Chain | Portable High-Speed Data Logger |
|---|---|
Use Scenario: Digitizing low-amplitude, high-frequency ultrasound echo signals in handheld diagnostic equipment. IC Role / Device Role / Timing Role: Primary SAR ADC capturing 500ksps differential sensor outputs with 102dB SNR to preserve tissue contrast resolution. Use Value: DGC mode enables single 5.5V supply for LT6350 driver, reducing BOM count and board area while maintaining 18-bit fidelity. |
Use Scenario: Battery-powered field recorder capturing vibration, temperature, and strain data from industrial assets. IC Role / Device Role / Timing Role: Low-power 18-bit ADC performing burst-mode acquisition with auto power-down between samples. Use Value: 6.8mW active power and 0.9µA shutdown current extend runtime; daisy-chain support enables multi-channel expansion without added MCU interfaces. |
| Industrial Process Control Loop | ATE Test Instrumentation |
Use Scenario: Closed-loop feedback digitization in precision motor control or chemical dosing systems requiring sub-LSB linearity. IC Role / Device Role / Timing Role: Deterministic-latency ADC providing synchronized 500ksps samples to FPGA-based PID controller. Use Value: ±1.75LSB INL max and no missing codes ensure monotonic response across full scale - critical for stable loop convergence. |
Use Scenario: High-accuracy DC parametric test of semiconductor devices requiring traceable 18-bit voltage/current measurement. IC Role / Device Role / Timing Role: Metrology-grade ADC referenced to calibrated 5.000V source, delivering 38µV LSB resolution. Use Value: 102dB SNR and –124dB THD enable accurate characterization of device nonlinearities below –100dBc. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7986BCPZ-RL7 | 18-bit, 1MSPS, 11.5mW; requires external reference; no DGC; 100dB SNR (typ) | Higher speed but higher power and no integrated DGC - demands dual-supply driver and tighter noise control. | Select when throughput >500ksps is required and system can accommodate higher power and external reference design. |
| ADS8860IDRCT | 16-bit, 1MSPS, 3.3mW; internal reference; no DGC; 92dB SNR (typ); SPI-only interface | Lower resolution and SNR, but lower power and integrated reference simplify layout - lacks DGC and thermal grade. | Select for cost-sensitive, lower-precision portable applications where 16-bit resolution suffices and –40°C to +85°C is not required. |
Compared with AD7986BCPZ-RL7 and ADS8860IDRCT, the LTC2377IDE-18#PBF uniquely balances 18-bit integrity, 500ksps throughput, ultra-low power, and DGC-enabled single-supply front-end compatibility - making it optimal for thermally constrained, battery-aware, high-fidelity measurement systems.
Availability
LTC2377IDE-18#PBF is available at Aetrix Electronics and suitable for medical imaging, portable instrumentation, industrial process control, and automated test equipment requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for LTC2377IDE-18#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2377IDE-18#PBF belongs to ADI's precision SAR ADC product line, engineered for applications demanding metrology-grade accuracy, low power, and robust operation in thermally demanding environments - especially where deterministic timing and simplified analog front-end design are critical.
FAQ
What is the operating temperature range of the LTC2377IDE-18#PBF?
The LTC2377IDE-18#PBF is specified for operation from –40°C to +85°C, qualifying it for industrial and extended-environment applications. This I-grade rating is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the official datasheet, with all key parameters (INL, SNR, power) guaranteed across this full range.
Does the LTC2377IDE-18#PBF require an external reference voltage?
Yes, the LTC2377IDE-18#PBF requires an external reference voltage applied to the REF pin, with a supported range of 2.5V to 5.1V. It does not include an internal reference; the REF pin must be decoupled with a 47µF X5R ceramic capacitor placed adjacent to the pin to maintain 102dB SNR performance.
How does Digital Gain Compression (DGC) work in the LTC2377IDE-18#PBF?
In the LTC2377IDE-18#PBF, DGC is enabled by grounding the REF/DGC pin, which digitally remaps the zero-scale code from 0V to 0.1×VREF and full-scale code from VREF to 0.9×VREF. For a 5V reference, this yields a usable input range of 0.5V to 4.5V - allowing single-supply amplifiers like the LT6350 to drive the ADC without negative rails.
What package type is used for the LTC2377IDE-18#PBF?
The LTC2377IDE-18#PBF uses a 16-lead (4mm × 3mm) plastic DFN package with an exposed thermal pad (Pin 17). This package is explicitly listed in the Order Information table under "LTC2377IDE-18#PBF" and requires soldering the exposed pad to the PCB ground plane for thermal dissipation and optimal electrical performance.
Can the LTC2377IDE-18#PBF be operated with a 3.3V OVDD supply?
Yes, the LTC2377IDE-18#PBF supports OVDD from 1.71V to 5.25V, including 3.3V. At OVDD = 3.3V, digital inputs (CNV, CHAIN, RDL/SDI, SCK) recognize VIH ≥ 2.64V and VIL ≤ 0.66V, while SDO outputs VOH ≥ 3.1V and VOL ≤ 0.2V - ensuring reliable interfacing with standard 3.3V microcontrollers and FPGAs.
LTC2377IDE-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.375V ~ 2.625V
- Voltage - Supply, Digital:
- 2.375V ~ 2.625V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2377IDE-18#PBF FAQ
1.How can I place an order for LTC2377IDE-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377IDE-18#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 LTC2377IDE-18#PBF reliable?
The price and inventory of LTC2377IDE-18#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2377IDE-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2377IDE-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377IDE-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377IDE-18#PBF?
LTC2377IDE-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377IDE-18#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 LTC2377IDE-18#PBF?
For technical support, including LTC2377IDE-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377IDE-18#PBF requirements.
6.How does Aetrix verify that LTC2377IDE-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2377IDE-18#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 LTC2377IDE-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2377IDE-18#PBF?
All LTC2377IDE-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377IDE-18#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 LTC2377IDE-18#PBF part is unused and in its original packaging.
Return procedure for LTC2377IDE-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2377IDE-18#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
