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Analog Devices Inc. LTC2377CDE-16#PBF
- Part No.:
- LTC2377CDE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2377CDE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,030
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Product details
Overview
LTC2377CDE-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with ±0.5LSB INL max, 97dB SNR at 2kHz, and fully differential ±VREF input range (2.5V to 5.1V reference). It operates from a single 2.5V supply, consumes 6.8mW at full speed, and features digital gain compression (DGC) for single-supply amplifier interfacing. It is used in high-speed data acquisition systems requiring precision, low power, and thermal stability up to 70°C.
For engineers reviewing the LTC2377CDE-16#PBF datasheet, LTC2377CDE-16#PBF pinout, LTC2377CDE-16#PBF application, or LTC2377CDE-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation, SPI-compatible daisy-chain interface, internal conversion clock, DGC-enabled 0.5V–4.5V input range with 5V reference, and 4mm × 3mm DFN package with exposed ground pad.
Technical Context
The LTC2377CDE-16#PBF implements a charge redistribution capacitor DAC (CDAC) architecture with differential comparator and 16-bit successive approximation logic. Conversion is initiated by a rising edge on CNV, with no pipeline delay and fixed 1.5µs conversion time set by an internal oscillator.
It supports two operating modes via the CHAIN pin: normal mode (RDL/SDI as bus enable) and daisy-chain mode (RDL/SDI as serial data input). The REF/DGC pin selects between full ±VREF range (REF tied) or DGC-compressed 10%–90% range (GND tied), enabling single-supply driver amplifiers without sacrificing resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes across full temperature range (0°C to 70°C). |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth with no cycle latency. |
| SNR | 97dB (typ, fIN = 2kHz, VREF = 5V) - delivers >15.8 effective bits for high-fidelity signal digitization. |
| INL | ±0.5LSB (max) - ensures accurate end-point linearity critical for closed-loop control and calibration systems. |
| Power Dissipation | 6.8mW at 500ksps - allows battery-powered or thermally constrained instrumentation without active cooling. |
| Digital I/O Voltage | 1.8V to 5V - supports direct interfacing with FPGA, microcontroller, or ASIC I/O domains without level shifters. |
| Reference Range | 2.5V to 5.1V - permits flexible system-level scaling (e.g., 5V ref yields 152µV LSB; 2.5V ref halves noise floor impact). |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed ground pad (Pin 17), RoHS-compliant, rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (CHAIN) | Chain Mode Selector | High enables daisy-chain SPI mode; low configures RDL/SDI as bus-enable input for standalone operation. |
| Pin 2 (VDD) | Analog Core Supply | 2.5V ±62.5mV supply; requires 10µF ceramic bypass to GND for stable SAR conversion performance. |
| Pins 3, 6, 10, 16 (GND) | Analog/Digital Ground | Multiple ground pins minimize ground bounce; exposed pad (Pin 17) must be soldered to PCB ground plane for thermal and noise integrity. |
| Pins 4, 5 (IN+, IN–) | Differential Analog Inputs | Accept ±VREF input range; 45pF sampling capacitance + 40Ω switch resistance defines acquisition settling behavior. |
| Pin 7 (REF) | Reference Input | 2.5V–5.1V external reference; requires 47µF X5R ceramic decoupling close to pin for low-noise ADC operation. |
| Pin 8 (REF/DGC) | Digital Gain Compression Control | Tied to GND enables DGC (0.1×VREF to 0.9×VREF input range); tied to REF disables DGC for full ±VREF range. |
| Pin 9 (CNV) | Convert Trigger | Rising-edge–sensitive; initiates acquisition and conversion; powers up device from auto-power-down state. |
| Pin 11 (BUSY) | Conversion Status Indicator | Active-high open-drain output; asserts during conversion, clears when 16-bit result is ready on SDO. |
| Pin 12 (RDL/SDI) | Serial Interface Control/Data In | In normal mode: bus enable; in chain mode: serial data input for cascaded ADC configurations. |
| Pin 13 (SCK) | Serial Clock Input | Supports up to 100MHz clock (10ns period); controls timing of SDO data output and SDI sampling. |
| Pin 14 (SDO) | Serial Data Output | 2's complement format, MSB-first; valid within 9.5ns of SCK↑; compatible with 1.8V–5V host logic levels. |
| Pin 15 (OVDD) | I/O Interface Supply | 1.71V–5.25V digital supply; sets logic thresholds for all digital pins; bypass with 0.1µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Enables single 5.5V supply for driving amplifiers by mapping full-scale input to 0.5V–4.5V (with 5V ref), eliminating need for negative rail. |
| No Missing Codes Guarantee | Ensures monotonicity across full 16-bit range at 0°C to 70°C - essential for position feedback, sensor linearization, and metrology. |
| Internal Conversion Clock | Removes external clock source dependency and jitter sensitivity; fixes tCONV at 1.5µs for deterministic timing in real-time systems. |
| Auto Power-Down | Reduces current to ≤0.9µA between conversions - cuts average power by >99% at low sample rates (e.g., 500sps → 6.8µW). |
| SPI Daisy-Chain Mode | Allows synchronous readout of multiple LTC2377 devices using one SCK/SDO pair - simplifies multi-channel PCB layout and firmware. |
Applications
| Medical Imaging Signal Chain | Portable High-Speed Data Logger |
|---|---|
Use Scenario: Digitizing low-noise CT/MRI front-end sensor outputs with wide dynamic range and strict THD requirements. IC Role / Device Role / Timing Role: Primary 16-bit SAR ADC capturing 500ksps differential analog waveforms with <–123dB THD and 97dB SNR. Use Value: DGC mode enables single-supply LT6350 driver, reducing BOM count and board area while preserving full 16-bit resolution. |
Use Scenario: Battery-powered field instrument recording vibration, acoustic, or environmental sensor data over hours. IC Role / Device Role / Timing Role: Low-power ADC sampling at adaptive rates (500ksps burst or 500sps sleep) with automatic power-down between samples. Use Value: 6.8mW active / 0.9µA standby power enables >1-year operation on a single Li-ion cell without thermal throttling. |
| Industrial Process Controller ADC | ATE Digital Pattern Generator Feedback |
Use Scenario: Closed-loop servo control in PLC modules where precise analog feedback (current/voltage/position) must be sampled synchronously. IC Role / Device Role / Timing Role: Deterministic-latency ADC with no pipeline delay, triggered by real-time CPU or FPGA CNV pulse. Use Value: ±0.5LSB INL and guaranteed no-missing-codes ensure accurate PID computation and prevent control instability. |
Use Scenario: Capturing waveform fidelity of high-speed digital pattern generators during production test. IC Role / Device Role / Timing Role: Reference-grade ADC validating DAC output linearity, noise, and harmonic distortion at 2kHz–250kHz. Use Value: 97dB SNR and –123dB THD meet Class A ATE accuracy requirements; SPI daisy-chain supports parallel multi-channel validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7960BCPZ-RL7 | 18-bit, 5Msps, 2.5V supply, no DGC, LVDS interface, higher power (43mW), larger 40-lead LFCSP package. | Targeted at ultra-high-resolution imaging or spectral analysis where speed and bit depth outweigh power and interface constraints. | Select AD7960BCPZ-RL7 only if >16-bit resolution and >500ksps throughput are mandatory; not drop-in due to interface, power, and layout incompatibility. |
| ADS8860IDRCT | 16-bit, 1MSPS, 2.5–5V supply, SPI interface, no DGC, 10mW at 1MSPS, 10-lead VSSOP package. | Optimized for compact, cost-sensitive portable instruments where 1MSPS is needed but DGC and thermal grade are secondary. | Choose ADS8860IDRCT for higher speed in space-constrained designs; LTC2377CDE-16#PBF remains preferred for DGC, lower power at 500ksps, and extended temp support. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2377CDE-16#PBF uniquely balances 500ksps speed, 97dB SNR, DGC-enabled single-supply drive, and 6.8mW power in a thermally robust DFN - making it optimal for portable, industrial, and medical systems demanding precision without design complexity.
Availability
LTC2377CDE-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable high-speed data loggers, and industrial process controllers requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for LTC2377CDE-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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2377-16 belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding high resolution, low power, and robust operation in thermally demanding environments - including portable instrumentation and industrial control.
FAQ
What is the operating temperature range for the LTC2377CDE-16#PBF?
The LTC2377CDE-16#PBF is specified for 0°C to 70°C ambient operation. This "C-grade" temperature range is validated per the datasheet's absolute maximum and electrical characteristics tables, and applies specifically to the DFN package variant marked "CDE". It is distinct from the I-grade (–40°C to 85°C) and H-grade (–40°C to 125°C) versions.
Does the LTC2377CDE-16#PBF require an external clock source?
No, the LTC2377CDE-16#PBF uses an internal oscillator to set conversion timing, eliminating the need for an external clock. Its fixed 1.5µs conversion time (tCONV) and deterministic 2µs minimum cycle time (tCYC) simplify system timing design and reduce jitter sensitivity compared to externally clocked ADCs.
How does Digital Gain Compression (DGC) work in the LTC2377CDE-16#PBF?
In the LTC2377CDE-16#PBF, DGC is enabled by grounding the REF/DGC pin (Pin 8). This remaps the full-scale input range from ±VREF to 0.1×VREF to 0.9×VREF - e.g., 0.5V to 4.5V with a 5V reference - allowing single-supply amplifiers like the LT6350 to drive the ADC without a negative rail while retaining full 16-bit code utilization.
What package type and pin count does the LTC2377CDE-16#PBF use?
The LTC2377CDE-16#PBF uses a 16-lead plastic DFN package measuring 4mm × 3mm with an exposed ground pad (Pin 17). This compact, thermally efficient package is distinct from the MSOP variant and is optimized for high-density PCB layouts in portable and industrial equipment.
Is the LTC2377CDE-16#PBF pin-compatible with other variants in the LTC2377-16 family?
Yes - all LTC2377-16 variants (CDE, IDE, HMS, CMS, IMS) share identical pinouts and footprints across DFN and MSOP packages. The LTC2377CDE-16#PBF is mechanically and electrically pin-compatible with LTC2377IDE-16#PBF and LTC2377HMS-16#PBF, enabling drop-in replacement for temperature grade upgrades without PCB changes.
LTC2377CDE-16#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:
- 16
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2377CDE-16#PBF FAQ
1.How can I place an order for LTC2377CDE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377CDE-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 LTC2377CDE-16#PBF reliable?
The price and inventory of LTC2377CDE-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 LTC2377CDE-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2377CDE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377CDE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377CDE-16#PBF?
LTC2377CDE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377CDE-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 LTC2377CDE-16#PBF?
For technical support, including LTC2377CDE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377CDE-16#PBF requirements.
6.How does Aetrix verify that LTC2377CDE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2377CDE-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 LTC2377CDE-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2377CDE-16#PBF?
All LTC2377CDE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377CDE-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 LTC2377CDE-16#PBF part is unused and in its original packaging.
Return procedure for LTC2377CDE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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