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Analog Devices Inc. LTC2377CDE-16#TRPBF
- Part No.:
- LTC2377CDE-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2377CDE-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,587
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Product details
Overview
LTC2377CDE-16#TRPBF 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 - used in high-speed data acquisition systems requiring precision, low power, and thermal robustness up to 70°C.
For engineers reviewing the LTC2377CDE-16#TRPBF datasheet, LTC2377CDE-16#TRPBF pinout, LTC2377CDE-16#TRPBF application, or LTC2377CDE-16#TRPBF 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#TRPBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, supporting true bipolar ±VREF input sampling without pipeline latency. Its internal oscillator eliminates external clock dependency, and auto power-down between conversions scales current draw from 2.7mA at 500ksps to 0.9µA in standby.
Digital gain compression (DGC) is controlled via the REF/DGC pin: grounding it remaps zero-scale from 0V to 0.1·VREF and full-scale from VREF to 0.9·VREF, enabling rail-to-rail amplifier drive from a single 5.5V supply while preserving full 16-bit resolution and 97dB SNR performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels with guaranteed no missing codes. |
| Sampling Rate | 500ksps - supports real-time capture of signals up to 250kHz Nyquist bandwidth. |
| SNR | 97dB (typ, fIN = 2kHz, VREF = 5V) - enables >15.8 effective bits of dynamic range. |
| INL | ±0.5LSB (max) - ensures monotonicity and accurate end-point linearity for calibration-critical systems. |
| Power Consumption | 6.8mW at 500ksps - achieves 13.6µW per sample, critical for portable instrumentation. |
| Reference Range | 2.5V to 5.1V - allows flexible system-level scaling and compatibility with standard voltage references. |
| Digital I/O Voltage | 1.8V to 5V (OVDD) - supports direct interfacing with mixed-voltage microcontrollers and FPGAs. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed thermal pad (Pin 17), rated for 0°C to 70°C operation. Exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Selects daisy-chain mode (high) or normal bus-enable mode (low); determines RDL/SDI function. |
| VDD (2) | Analog supply | 2.5V ±62.5mV supply; powers core ADC and reference buffer; requires 10µF ceramic bypass. |
| GND (3,6,10,16) | Analog/digital ground | Common return for analog inputs, reference, and digital logic; multiple pins reduce ground impedance. |
| IN+, IN– (4,5) | Differential analog inputs | Accept ±VREF fully differential signal; 45pF input capacitance and 40Ω switch resistance define acquisition settling behavior. |
| REF (7) | Reference voltage input | 2.5V–5.1V external reference; decoupled with 47µF X5R capacitor for noise immunity. |
| REF/DGC (8) | Reference/DGC mode select | Ground to enable DGC (0.1–0.9×VREF input range); tie to REF to disable DGC (±VREF range). |
| CNV (9) | Convert trigger | Rising-edge initiated conversion; powers up ADC and starts acquisition phase with no latency. |
| BUSY (11) | Status indicator | Active-high open-drain output signaling conversion in progress; synchronizes host read timing. |
| RDL/SDI (12) | Data/control input | In normal mode: bus enable; in chain mode: serial data input for daisy-chained ADCs. |
| SCK (13) | Serial clock | Up to 100MHz SPI clock; rising-edge sampled; defines SDO timing and data rate. |
| SDO (14) | Serial data output | 2's complement 16-bit result shifted MSB-first on SCK rising edges; supports daisy-chain readout. |
| OVDD (15) | I/O supply | 1.71V–5.25V logic supply; sets voltage thresholds for all digital pins; bypass with 0.1µF capacitor. |
| GND (17) | Exposed thermal pad | DFN-specific ground connection; mandatory soldering to PCB ground plane for thermal dissipation and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Eliminates need for negative supply in driving amplifiers by compressing full-scale input to 0.1–0.9×VREF, enabling single 5.5V supply operation with preserved 16-bit resolution. |
| No Cycle Latency | Immediate conversion start on CNV edge with deterministic 1.5µs tCONV; supports real-time closed-loop control without pipeline delay artifacts. |
| SPI-Compatible Daisy-Chain Mode | Enables multi-ADC synchronization and reduced GPIO count via cascaded SDO→SDI routing without additional control lines. |
| Internal Conversion Clock | Removes requirement for external timing circuitry; simplifies layout and improves jitter immunity in noise-sensitive environments. |
| Auto Power-Down Between Conversions | Reduces average power proportionally to sampling rate - drops to 6.8µW at 500sps - ideal for battery-powered wake-on-event systems. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing low-noise sensor outputs (e.g., photodiode arrays, piezoelectric transducers) in portable ultrasound or CT front-ends. IC Role / Device Role / Timing Role: Primary high-fidelity ADC capturing analog waveforms at 500ksps with 97dB SNR and ±0.5LSB INL for quantitative image reconstruction. Use Value: Enables detection of sub-millivolt physiological signals without amplification-induced distortion, directly supporting FDA-cleared diagnostic accuracy requirements. | Use Scenario: High-precision monitoring of temperature, pressure, and flow sensors in PLC analog input modules operating in harsh factory environments. IC Role / Device Role / Timing Role: Isolated, thermally stable ADC interfacing with industrial-grade op-amps and references across –40°C to 70°C ambient range. Use Value: Guarantees 16-bit no-missing-codes operation and 94.6dB minimum SINAD over full temperature range, ensuring traceable metrology compliance (IEC 61000-6-2/4). |
| Portable Test Equipment | Automated Test Equipment (ATE) |
Use Scenario: Battery-powered handheld oscilloscopes and multimeters requiring high dynamic range and extended runtime. IC Role / Device Role / Timing Role: Low-power SAR ADC delivering 97dB SNR at 6.8mW, with DGC enabling single-supply 5.5V amplifier biasing. Use Value: Extends battery life by 3.2× versus comparable 16-bit ADCs while maintaining >15.8 ENOB for calibrated measurement accuracy. | Use Scenario: Channelized digitizer cards in semiconductor ATE systems performing parametric testing of ICs at production speeds. IC Role / Device Role / Timing Role: High-throughput, deterministic-latency ADC synchronized across multiple channels using daisy-chain SPI mode. Use Value: Eliminates inter-channel skew and supports simultaneous sampling of up to 8 channels with shared SCK, reducing test head complexity and cost. |
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 |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, 92dB SNR, 2.5V supply, SPI interface; no DGC; 3mm × 3mm VSSOP package. | Lacks digital gain compression and has lower SNR; requires dual-supply amplifier for full ±VREF swing. | Choose when higher throughput (1MSPS) is prioritized over SNR and single-supply simplicity. |
| MAX11198ETE+ | 16-bit, 500ksps, 94.5dB SNR, 2.5V supply, SPI; includes internal reference; 16-pin TQFN (4mm × 4mm). | Integrated 4.096V reference reduces BOM count but limits input range flexibility vs. external 2.5–5.1V VREF. | Choose when reference stability and board space are critical, and fixed 4.096V scaling suffices. |
Compared with ADS8860IDRCT and MAX11198ETE+, the LTC2377CDE-16#TRPBF uniquely combines 97dB SNR, DGC-enabled single-supply drive, and deterministic 500ksps timing - making it optimal for applications where dynamic range, power efficiency, and analog interface simplicity are jointly constrained.
Availability
LTC2377CDE-16#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring systems, and portable test equipment requiring stable component supply, long-term manufacturability, and guaranteed 16-bit no-missing-codes performance.
Supply support for LTC2377CDE-16#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2377-16 product line was designed for high-accuracy, low-power data acquisition in space-constrained and thermally demanding applications - emphasizing SNR, INL, and flexible analog interface architecture over raw speed alone.
FAQ
What is the maximum sampling rate supported by the LTC2377CDE-16#TRPBF?
The LTC2377CDE-16#TRPBF supports a maximum sampling rate of 500ksps, with a guaranteed conversion time of 1.5µs and no pipeline latency. This enables real-time capture of signals with up to 250kHz bandwidth while maintaining full 16-bit resolution and ±0.5LSB INL specification across the full operating temperature range of 0°C to 70°C.
Does the LTC2377CDE-16#TRPBF require an external reference voltage?
Yes, the LTC2377CDE-16#TRPBF requires an external reference voltage applied to the REF pin, with a specified range of 2.5V to 5.1V. The device does not include an internal reference; instead, it relies on a high-stability external source (e.g., LT6657 or ADR4550) decoupled with a 47µF X5R ceramic capacitor to achieve its 97dB SNR and ±0.5LSB INL performance.
How does Digital Gain Compression (DGC) work on the LTC2377CDE-16#TRPBF?
Digital Gain Compression (DGC) on the LTC2377CDE-16#TRPBF is enabled by grounding the REF/DGC pin. This remaps the full-scale input range from ±VREF to 0.1·VREF to 0.9·VREF - for example, 0.5V to 4.5V with a 5V reference - allowing the driving amplifier to operate from a single 5.5V supply while preserving full 16-bit resolution and 97dB SNR performance.
What package type is used for the LTC2377CDE-16#TRPBF?
The LTC2377CDE-16#TRPBF uses a 16-lead plastic DFN package measuring 4mm × 3mm with an exposed thermal pad (Pin 17). This package is rated for 0°C to 70°C operation and requires the exposed pad to be soldered directly to the PCB ground plane to ensure proper thermal dissipation and low-noise performance.
Can the LTC2377CDE-16#TRPBF interface with 1.8V logic systems?
Yes, the LTC2377CDE-16#TRPBF supports 1.8V logic interfaces via its OVDD pin, which accepts supply voltages from 1.71V to 5.25V. When OVDD = 1.8V, all digital inputs (CNV, SCK, CHAIN, RDL/SDI) recognize 0.2·OVDD (0.36V) as low and 0.8·OVDD (1.44V) as high, and the SDO output drives valid logic levels compatible with 1.8V CMOS receivers - enabling seamless integration with ultra-low-voltage microcontrollers and FPGAs.
LTC2377CDE-16#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC2377CDE-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377CDE-16#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 LTC2377CDE-16#TRPBF reliable?
The price and inventory of LTC2377CDE-16#TRPBF 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#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2377CDE-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377CDE-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377CDE-16#TRPBF?
LTC2377CDE-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377CDE-16#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 LTC2377CDE-16#TRPBF?
For technical support, including LTC2377CDE-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377CDE-16#TRPBF requirements.
6.How does Aetrix verify that LTC2377CDE-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2377CDE-16#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 LTC2377CDE-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2377CDE-16#TRPBF?
All LTC2377CDE-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377CDE-16#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 LTC2377CDE-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2377CDE-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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