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Analog Devices Inc. LTC2377IDE-16#PBF
- Part No.:
- LTC2377IDE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2377IDE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,306
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Product details
Overview
LTC2377IDE-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–5.1V). It operates from a single 2.5V supply, consumes only 6.8mW at full speed, and features digital gain compression (DGC) to enable single-supply amplifier driving. It is used in high-speed data acquisition systems requiring precision, low power, and wide dynamic range.
For engineers reviewing the LTC2377IDE-16#PBF datasheet, LTC2377IDE-16#PBF pinout, LTC2377IDE-16#PBF application, or LTC2377IDE-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation, daisy-chain SPI interface compatibility, internal conversion clock, −40°C to +85°C industrial temperature rating, and DGC-enabled 0.5V–4.5V input range with 5V reference.
Technical Context
The LTC2377IDE-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, achieving no pipeline delay and zero cycle latency. Its internal oscillator eliminates external clock dependency, while auto power-down between conversions scales power dissipation with sampling rate.
Digital gain compression (DGC) is controlled via the REF/DGC pin: grounded enables 10%–90% full-scale mapping (e.g., 0.5V–4.5V for VREF = 5V), preserving 16-bit resolution without requiring negative supply for driver amplifiers. The SPI-compatible serial interface supports 1.8V–5V I/O logic and daisy-chain mode for multi-ADC synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels with guaranteed no missing codes across temperature. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth with no throughput bottleneck. |
| SNR | 97dB (typ, fIN = 2kHz, VREF = 5V) - supports >15.8 effective bits (ENOB) for high-fidelity signal digitization. |
| INL | ±0.5LSB (max) - ensures monotonicity and accurate end-point linearity critical for closed-loop control and metrology. |
| Power Consumption | 6.8mW at 500ksps - allows battery-powered portable instrumentation with minimal thermal impact. |
| Input Range | ±VREF fully differential (2.5V–5.1V) - accommodates flexible signal conditioning topologies and wide dynamic range inputs. |
| DGC Function | Enabled by grounding REF/DGC - shifts full-scale to 0.1×VREF to 0.9×VREF, enabling single 5.5V-supply amplifier operation. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17 = GND), rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CHAIN | Chain mode selector | Low = normal SPI mode (RDL/SDI = bus enable); high = daisy-chain mode (RDL/SDI = serial data input). |
| 2 - VDD | Analog core supply | 2.375V–2.625V supply powering SAR core and reference buffer; requires 10µF ceramic bypass to GND. |
| 4,5 - IN+, IN− | Differential analog inputs | Accept ±VREF swing; input capacitance 45pF (sample), 5pF (hold); common-mode range = VREF/2 ± 0.1V. |
| 7 - REF | Reference voltage input | 2.5V–5.1V external reference; decoupled with 47µF X5R ceramic capacitor at pin. |
| 8 - REF/DGC | DGC enable/control | Tied to GND enables digital gain compression; tied to REF disables DGC and restores full ±VREF range. |
| 9 - CNV | Convert trigger | Rising edge initiates conversion and powers up ADC; no external timing circuitry required due to internal oscillator. |
| 11 - BUSY | Conversion status indicator | High during conversion; low when result ready on SDO - enables precise timing of data reads without polling. |
| 12 - RDL/SDI | Mode-dependent I/O | In normal mode: bus enable for SDO tri-state; in chain mode: serial data input from upstream ADC. |
| 13 - SCK | Serial clock input | Supports up to 100MHz clock (10ns period); MSB-first output on SDO synchronized to rising edge. |
| 14 - SDO | Serial data output | 2's complement 16-bit result; tri-state controlled by RDL in normal mode; driven in chain mode only after BUSY goes low. |
| 15 - OVDD | Digital I/O supply | 1.71V–5.25V logic supply; sets VIH/VIL thresholds; bypassed with 0.1µF capacitor to GND. |
| 3,6,10,16 - GND | Analog/digital ground | Multiple dedicated GND pins minimize ground bounce; exposed pad (Pin 17) must be soldered to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay / zero cycle latency | Enables deterministic real-time control loops and immediate post-conversion processing without FIFO buffering. |
| Internal conversion clock | Eliminates need for external timing components, simplifying layout and reducing BOM count in space-constrained designs. |
| Digital gain compression (DGC) | Allows use of single-supply op-amps (e.g., LT6350 from +5.5V) while retaining full 16-bit resolution and ENOB. |
| Guaranteed operation to 85°C | Validated performance across full industrial temperature range (–40°C to +85°C), suitable for embedded and field-deployed systems. |
| SPI-compatible daisy-chain mode | Enables synchronous sampling of multiple LTC2377IDE-16#PBF devices using one SCK and shared CNV, reducing controller GPIO count. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing low-noise sensor outputs (e.g., photodiode arrays, pressure transducers) in portable ultrasound or patient monitors. IC Role / Device Role / Timing Role: Primary high-resolution ADC capturing analog front-end signals at up to 500ksps with minimal latency and thermal drift. Use Value: 97dB SNR and ±0.5LSB INL ensure diagnostic-grade fidelity; DGC simplifies analog front-end design by eliminating dual-supply op-amps. |
Use Scenario: High-accuracy voltage/current measurement in PLC analog input modules operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision SAR ADC interfacing with isolated signal conditioners and reporting via industrial Ethernet or CAN. Use Value: Guaranteed 16-bit no-missing-codes operation over –40°C to +85°C ensures long-term calibration stability; SPI daisy-chain supports multi-channel synchronized sampling. |
| Portable Test Equipment | Automated Test Equipment (ATE) |
Use Scenario: Handheld oscilloscopes or multimeters requiring high resolution, low power, and compact form factor. IC Role / Device Role / Timing Role: Core ADC delivering fast acquisition with battery-friendly 6.8mW consumption at full speed. Use Value: Auto power-down between conversions reduces average current to µW level during idle periods, extending battery life significantly. |
Use Scenario: Channel-per-pin ATE systems demanding simultaneous sampling, high linearity, and repeatable test repeatability. IC Role / Device Role / Timing Role: High-speed, low-latency ADC with deterministic timing for time-critical parametric testing. Use Value: No cycle latency and internal clock guarantee jitter-free sampling windows; daisy-chain mode enables tight inter-channel skew control (<1ns). |
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, 2.5V supply, no DGC, LVDS interface (not SPI), higher power (43mW) | Higher resolution/speed but requires LVDS FPGA interface and dual supplies for drivers; no DGC simplifies analog design less than LTC2377IDE-16#PBF | Select when >16-bit resolution and >500ksps throughput are mandatory; avoid if SPI interface or low-power portability is required. |
| ADS8860IDRCT | 16-bit, 1MSPS, 2.5–5V supply, SPI interface, no DGC, 1.8V–3.3V I/O only, lower SNR (92.5dB) | Higher speed but lacks DGC and industrial temp grade; SNR and INL specs looser (±1.25LSB INL, 92.5dB SNR) | Select for cost-sensitive, high-volume consumer applications where DGC and extended temp are not needed; verify driver supply constraints. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2377IDE-16#PBF uniquely balances 500ksps speed, 97dB SNR, SPI compatibility, DGC-enabled single-supply drive, and industrial temperature support-making it optimal for portable, precision, and thermally demanding embedded data acquisition.
Availability
LTC2377IDE-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring systems, and portable test equipment requiring stable component supply, guaranteed 16-bit performance, and long-term industrial temperature reliability.
Supply support for LTC2377IDE-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 LTC2377IDE-16#PBF belongs to ADI's legacy Linear Technology precision SAR ADC family, designed specifically for applications demanding high resolution, low power, and robust operation in space- and power-constrained embedded systems.
FAQ
What is the operating temperature range of the LTC2377IDE-16#PBF?
The LTC2377IDE-16#PBF is rated for operation from –40°C to +85°C, meeting industrial temperature requirements. This range is validated across all key specifications including INL (±0.5LSB max), SNR (97dB typ), and power consumption (6.8mW at 500ksps). The DFN package's exposed pad enhances thermal performance under sustained load.
Does the LTC2377IDE-16#PBF require an external clock source?
No, the LTC2377IDE-16#PBF includes an internal oscillator that sets conversion timing, eliminating the need for an external clock. This simplifies system design and improves timing robustness. The SCK pin is used only for serial data transfer and supports up to 100MHz, independent of conversion timing.
How does Digital Gain Compression (DGC) work in the LTC2377IDE-16#PBF?
DGC in the LTC2377IDE-16#PBF is enabled by grounding the REF/DGC pin (Pin 8), which digitally remaps the full-scale input range from ±VREF to 0.1×VREF to 0.9×VREF. For VREF = 5V, this yields a 0.5V–4.5V input window, allowing single-supply amplifiers like the LT6350 to drive the ADC without negative rails while preserving full 16-bit resolution.
Can the LTC2377IDE-16#PBF be used in daisy-chain configuration?
Yes, the LTC2377IDE-16#PBF supports daisy-chain mode via the CHAIN pin (Pin 1). When pulled high, RDL/SDI becomes a serial data input, and SDO outputs the concatenated results of multiple devices. This enables synchronized sampling across several LTC2377IDE-16#PBF units using a single CNV and SCK, reducing controller resource usage.
What is the absolute maximum input voltage on the IN+ and IN− pins of the LTC2377IDE-16#PBF?
The absolute maximum analog input voltage on IN+ and IN− is (GND – 0.05V) to (REF + 0.05V), per the datasheet's electrical characteristics table. Exceeding this range risks damage or latch-up. The recommended operating range is ±VREF differential with common-mode centered at VREF/2 ± 0.1V, ensuring optimal linearity and noise performance.
LTC2377IDE-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2377IDE-16#PBF FAQ
1.How can I place an order for LTC2377IDE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2377IDE-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 LTC2377IDE-16#PBF reliable?
The price and inventory of LTC2377IDE-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 LTC2377IDE-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2377IDE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2377IDE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2377IDE-16#PBF?
LTC2377IDE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2377IDE-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 LTC2377IDE-16#PBF?
For technical support, including LTC2377IDE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2377IDE-16#PBF requirements.
6.How does Aetrix verify that LTC2377IDE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2377IDE-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 LTC2377IDE-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2377IDE-16#PBF?
All LTC2377IDE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2377IDE-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 LTC2377IDE-16#PBF part is unused and in its original packaging.
Return procedure for LTC2377IDE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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