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Analog Devices Inc. LTC2370CDE-16#PBF
- Part No.:
- LTC2370CDE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2370CDE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,449
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Product details
Overview
LTC2370CDE-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit pseudo-differential unipolar successive approximation register (SAR) ADC with 2 Msps throughput, ±0.85 LSB INL max, 94 dB SNR (typ), and operation from a single 2.5 V supply. It supports VREF from 2.5 V to 5.1 V and consumes only 19 mW at full speed, targeting high-speed data acquisition in medical imaging and portable instrumentation.
For engineers reviewing the LTC2370CDE-16#PBF datasheet, LTC2370CDE-16#PBF pinout, LTC2370CDE-16#PBF application, or LTC2370CDE-16#PBF equivalent, key selection criteria include guaranteed no-missing-codes at 16 bits, daisy-chain SPI interface compatibility, internal conversion clock, 1.8 V–5 V I/O voltage support, and operation up to 70°C ambient.
Technical Context
The LTC2370CDE-16#PBF implements a charge-redistribution CDAC architecture with pseudo-differential sampling, where IN+ accepts 0 V to VREF and IN– serves as a ground-sense input with ±100 mV range. Conversion is initiated by a rising edge on CNV, with no pipeline delay and fixed 322 ns conversion time.
Its SPI-compatible serial interface supports both normal mode (RDL/SDI as bus enable) and daisy-chain mode (RDL/SDI as SDI when CHAIN = high), with SDO outputting straight-binary 16-bit data MSB-first on SCK rising edges. Internal oscillator eliminates external clock dependency, and auto power-down reduces current to 0.9 µA between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels for high dynamic range digitization |
| Sampling Rate | 2 Msps - enables real-time capture of signals up to 1 MHz Nyquist bandwidth |
| INL (max) | ±0.85 LSB - ensures monotonicity and <0.0013% full-scale linearity error |
| SNR (typ) | 94 dB at fIN = 2 kHz - corresponds to ~15.6 effective bits (ENOB) under test conditions |
| Power (2 Msps) | 19 mW - achieved with 2.5 V VDD and 2.5 V OVDD, enabling low-thermal-footprint designs |
| VREF Range | 2.5 V to 5.1 V - allows flexible full-scale adjustment while maintaining 76 µV LSB (at 5 V) |
| Operating Temp | 0°C to 70°C - commercial-grade rating suitable for non-extended-environment instrumentation |
Pinout & Package
Package: 16-lead (4 mm × 3 mm) plastic DFN with exposed pad (Pin 17 = GND), θJA = 40°C/W. Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Selects daisy-chain (high) or normal bus-enable (low) operation; referenced to OVDD |
| VDD (2) | Analog supply | 2.5 V ±62.5 mV supply for core ADC; bypass with 10 µF ceramic capacitor |
| GND (3,6,10,16) | Analog/digital ground | Common reference for analog inputs, digital I/O, and REF; multiple pins reduce ground impedance |
| IN+ (4) | Pseudo-differential analog input | Accepts 0 V to VREF signal; sampled via 45 pF capacitance and 40 Ω switch RON |
| IN– (5) | Ground sense reference | ±100 mV range w.r.t. GND; must connect to system ground or remote ground sense point |
| REF (7,8) | Reference voltage input | 2.5 V–5.1 V external reference; requires 47 µF X5R ceramic decoupling at pin |
| CNV (9) | Convert trigger | Rising-edge–initiated conversion start; powers up ADC and begins acquisition phase |
| BUSY (11) | Status indicator | Active-high open-drain signal indicating conversion in progress; referenced to OVDD |
| RDL/SDI (12) | Configurable serial I/O | In normal mode: bus enable; in chain mode: serial data input for daisy-chain cascading |
| SCK (13) | Serial clock input | Drives data transfer timing; supports up to 100 MHz (10 ns period); referenced to OVDD |
| SDO (14) | Serial data output | MSB-first straight-binary 16-bit result; valid after tDSDO = 9.5 ns from SCK↑ |
| OVDD (15) | Digital I/O supply | 1.71 V–5.25 V logic interface supply; sets VIH/VIL thresholds and drives SDO/BUSY |
| GND (17) | Exposed pad ground | Thermal and electrical ground connection; mandatory soldering to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 16 bits | Guaranteed monotonic transfer function across full temperature range (0°C to 70°C) |
| Internal conversion clock | Eliminates need for external timing circuitry; simplifies layout and reduces BOM count |
| Daisy-chain SPI mode | Enables synchronous multi-ADC readout without additional GPIO or timing coordination |
| Auto power-down between conversions | Reduces idle current to 0.9 µA, scaling power linearly with sample rate for battery-sensitive systems |
| 1.8 V–5 V I/O compatibility | Interoperates directly with 1.8 V, 2.5 V, 3.3 V, and 5 V host processors without level shifters |
Applications
| Medical Imaging Data Acquisition | High-Speed Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing ultrasound echo return signals or CT detector outputs requiring >90 dB SNR and minimal latency. IC Role / Device Role / Timing Role: Primary SAR ADC capturing analog sensor outputs at 2 Msps with zero cycle latency and deterministic timing. Use Value: 94 dB SNR and ±0.85 LSB INL preserve weak signal fidelity critical for image contrast resolution and artifact suppression. | Use Scenario: Real-time monitoring of motor current/voltage waveforms or pressure transducer outputs in PLC-based control systems. IC Role / Device Role / Timing Role: High-fidelity front-end ADC interfacing with FPGA or microcontroller over SPI with daisy-chain capability for multi-channel sync. Use Value: 2 Msps throughput and no pipeline delay enable closed-loop response within sub-microsecond windows for fast-acting feedback control. |
| Portable Precision Instrumentation | Battery-Powered Test & Measurement Equipment |
Use Scenario: Handheld oscilloscopes or spectrum analyzers needing compact size, low heat, and extended battery life. IC Role / Device Role / Timing Role: Core ADC operating from single 2.5 V rail with auto power-down to minimize average current draw during idle periods. Use Value: 19 mW active power and 0.9 µA shutdown current extend runtime while maintaining 16-bit resolution and 94 dB SNR performance. | Use Scenario: Field-deployable data loggers capturing vibration, temperature, or acoustic data over hours with high accuracy. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC paired with precision reference (e.g., LTC6655-5) for stable long-duration measurements. Use Value: Guaranteed 16-bit no-missing-codes and 2.5 V–5.1 V VREF flexibility allow calibration traceability and full-scale optimization per sensor range. |
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, 2.5 V supply, SPI interface, but requires external reference and separate VIO supply | Higher resolution and speed, but larger package (32-lead LFCSP) and higher power (39 mW) | Select when ENOB >15.5 bits and >3 Msps throughput are required; verify reference and layout complexity trade-offs |
| ADS8860IDRCT | 16-bit, 1 Msps, 2.5–5 V supply, SPI, integrated reference, lower power (11 mW), no daisy-chain mode | Lower speed and no daisy-chain, but smaller 3 mm × 3 mm WSON package and simpler reference integration | Select for cost-sensitive, space-constrained designs where 1 Msps suffices and daisy-chain is unnecessary |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2370CDE-16#PBF uniquely balances 2 Msps throughput, 94 dB SNR, daisy-chain capability, and 19 mW power in a compact 4 mm × 3 mm DFN-making it optimal for multi-channel, battery-aware, high-fidelity acquisition where timing determinism and layout simplicity are prioritized.
Availability
LTC2370CDE-16#PBF is available at Aetrix Electronics and suitable for medical imaging systems, industrial process controllers, and portable instrumentation requiring stable component supply, commercial-temperature-grade reliability, and lead-free compliance.
Supply support for LTC2370CDE-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 LTC2370-16 product line was designed for high-speed, low-power, high-accuracy data acquisition in space-, power-, and noise-constrained environments-emphasizing deterministic latency, SPI interoperability, and simplified system integration.
FAQ
What is the maximum recommended VREF voltage for LTC2370CDE-16#PBF?
The LTC2370CDE-16#PBF supports VREF from 2.5 V to 5.1 V per absolute maximum ratings. Operation at 5.1 V yields the largest full-scale range and highest SNR (94 dB typical), while maintaining guaranteed 16-bit no-missing-codes performance across 0°C to 70°C. Exceeding 5.1 V risks damage and invalidates specifications.
Does LTC2370CDE-16#PBF require external clocking for conversion timing?
No. The LTC2370CDE-16#PBF integrates an internal oscillator that sets conversion time (tCONV = 278–322 ns). No external clock is needed for core ADC operation-only the SCK signal is required for serial data readout. This simplifies timing design and eliminates jitter sources from external clock distribution.
Can LTC2370CDE-16#PBF interface directly with a 1.8 V microcontroller?
Yes. The LTC2370CDE-16#PBF supports OVDD from 1.71 V to 5.25 V. When OVDD = 1.8 V, its digital I/O (SCK, SDO, BUSY, CNV, CHAIN, RDL/SDI) operate at compatible voltage thresholds (VIH = 1.44 V min, VIL = 0.36 V max), enabling direct connection to 1.8 V logic without level shifters.
What is the purpose of the exposed pad (Pin 17) on the LTC2370CDE-16#PBF DFN package?
The exposed pad (Pin 17) on the LTC2370CDE-16#PBF is electrically and thermally connected to GND. It must be soldered to a PCB ground plane to ensure proper thermal dissipation (θJA = 40°C/W) and low-impedance grounding for analog and digital sections-failure to do so degrades SNR, increases thermal resistance, and may cause instability.
How does the daisy-chain mode function on LTC2370CDE-16#PBF?
In daisy-chain mode (CHAIN = high), the LTC2370CDE-16#PBF accepts serial data on RDL/SDI and shifts its own 16-bit result out on SDO synchronously with SCK. Multiple devices can be cascaded: host SCK clocks data through all devices, with the last SDO returning the concatenated result-enabling synchronized multi-channel sampling with single GPIO control.
LTC2370CDE-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):
- 2M
- Number of Inputs:
- 1
- Input Type:
- Pseudo-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:
- -
LTC2370CDE-16#PBF FAQ
1.How can I place an order for LTC2370CDE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2370CDE-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 LTC2370CDE-16#PBF reliable?
The price and inventory of LTC2370CDE-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 LTC2370CDE-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2370CDE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2370CDE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2370CDE-16#PBF?
LTC2370CDE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2370CDE-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 LTC2370CDE-16#PBF?
For technical support, including LTC2370CDE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2370CDE-16#PBF requirements.
6.How does Aetrix verify that LTC2370CDE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2370CDE-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 LTC2370CDE-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2370CDE-16#PBF?
All LTC2370CDE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2370CDE-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 LTC2370CDE-16#PBF part is unused and in its original packaging.
Return procedure for LTC2370CDE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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