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Analog Devices Inc. LTC2370IDE-16#PBF
- Part No.:
- LTC2370IDE-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2370IDE-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,558
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Product details
Overview
LTC2370IDE-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 2Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply. It delivers 94dB typical SNR, ±0.85LSB max INL, and guaranteed no missing codes across its 0V to VREF input range (VREF = 2.5V–5.1V), making it suitable for high-speed data acquisition in portable instrumentation and industrial process control.
For engineers reviewing the LTC2370IDE-16#PBF datasheet, LTC2370IDE-16#PBF pinout, LTC2370IDE-16#PBF application, or LTC2370IDE-16#PBF equivalent, key selection considerations include its 2Msps throughput with zero cycle latency, internal conversion clock, daisy-chain SPI interface supporting 1.8V–5V logic, and guaranteed operation from –40°C to +85°C in the 4mm × 3mm DFN package.
Technical Context
The LTC2370IDE-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling the pseudo-differential IN+/IN– inputs during acquisition and performing binary-search conversion against VREF fractions. Its internal oscillator eliminates external clock dependency, and auto power-down between conversions scales dissipation with sample rate.
It supports two operational modes via the CHAIN pin: normal mode (RDL/SDI acts as bus enable) and daisy-chain mode (RDL/SDI becomes serial data input). The SPI-compatible interface outputs straight-binary 16-bit codes MSB-first on SDO, with timing validated for OVDD = 1.71V–5.25V and guaranteed tSCK ≤ 10ns (100MHz SCK).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full-scale quantization into 65,536 discrete levels with no missing codes. |
| Sampling Rate | 2Msps - enables real-time capture of signals up to 1MHz Nyquist bandwidth without pipeline delay. |
| SNR | 94dB typ at fIN = 2kHz - corresponds to ~15.6 effective bits (ENOB) for high-fidelity signal digitization. |
| INL | ±0.85LSB max - ensures monotonicity and linearity critical for precision measurement applications. |
| Power Dissipation | 19mW at 2Msps - enables battery-operated designs with minimal thermal impact in compact layouts. |
| Reference Range | VREF = 2.5V to 5.1V - allows flexible full-scale adjustment while maintaining 76µV LSB size at 5V reference. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17), thermally connected to GND. Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode select input | High enables daisy-chain SPI mode (RDL/SDI = SDI); low enables normal mode (RDL/SDI = bus enable). |
| VDD (2) | Analog supply | 2.5V ±62.5mV supply; bypassed with 10µF ceramic capacitor to GND for noise suppression. |
| GND (3,6,10,16) | Ground reference | Four dedicated GND pins minimize ground bounce; exposed pad (Pin 17) must be soldered to PCB ground. |
| IN+ (4) | Pseudo-differential analog input (+) | Accepts 0V to VREF with respect to IN–; input capacitance = 45pF in sample mode. |
| IN– (5) | Pseudo-differential analog input (–) | Common-mode sense node; input range ±100mV w.r.t. GND; ties to remote ground or system ground plane. |
| REF (7,8) | Reference voltage input | Dual-pinned for low-inductance connection; requires 47µF X5R ceramic decoupling close to pins. |
| CNV (9) | Convert trigger | Rising edge initiates acquisition and conversion; powers up device if in auto power-down state. |
| BUSY (11) | Status indicator | Active-high open-drain output signaling conversion in progress; synchronized to CNV edge. |
| RDL/SDI (12) | Serial interface control/data | Function depends on CHAIN state: bus enable (low) or serial data input (high) for daisy-chain cascading. |
| SCK (13) | Serial clock input | Accepts 100MHz max clock (tSCK ≤ 10ns); defines timing for SDO data output and SDI sampling. |
| SDO (14) | Serial data output | MSB-first straight-binary 16-bit result; valid within 9.5ns of SCK↑ (CL = 20pF). |
| OVDD (15) | I/O supply | 1.71V–5.25V digital interface supply; sets VIH/VIL thresholds and drives SDO/BUSY/RDL levels. |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Delivers first valid conversion result within one sampling period (500ns), eliminating pipeline delay for real-time control loops. |
| Auto power-down | Reduces current to 0.9µA between conversions, enabling ultra-low average power in burst-sampling applications. |
| Daisy-chain SPI mode | Allows synchronous readout of multiple LTC2370IDE-16#PBF devices using a single SCK/SDO line, minimizing interconnect count. |
| Internal conversion clock | Removes need for external timing circuitry; simplifies layout and improves jitter immunity versus external clock solutions. |
| Wide OVDD range | Supports direct interfacing with 1.8V, 2.5V, 3.3V, and 5V host processors without level shifters. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from ultrasound transducer front-ends or CT detector arrays requiring high dynamic range and low distortion. IC Role / Device Role / Timing Role: Primary high-speed ADC capturing baseband RF or sensor signals at 2Msps with 94dB SNR and –112dB THD. Use Value: Enables detection of weak physiological signals amid noise floor; 16-bit resolution preserves contrast detail in reconstructed images. | Use Scenario: Real-time sampling of pressure, temperature, or flow sensor outputs in PLC-based automation systems with strict latency requirements. IC Role / Device Role / Timing Role: High-accuracy data acquisition node feeding FPGA or microcontroller with deterministic 500ns conversion cycle time. Use Value: Eliminates pipeline delay for closed-loop response times <1µs; ±0.85LSB INL ensures calibration stability over temperature. |
| Portable Test Equipment | Battery-Powered Data Loggers |
Use Scenario: Handheld oscilloscopes or spectrum analyzers where size, power, and AC performance are constrained by battery life and thermal envelope. IC Role / Device Role / Timing Role: Core ADC in compact signal acquisition path, paired with LT6202 driver and LTC6655-5 reference. Use Value: 19mW at full speed and 19µW at 2ksps extends runtime; 4mm × 3mm DFN reduces PCB area vs. MSOP alternatives. | Use Scenario: Environmental monitoring nodes deployed in remote locations, acquiring sensor data intermittently over years on primary cells. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated by timer or event trigger, leveraging auto power-down between samples. Use Value: Sub-µA shutdown current (0.9µA typ) minimizes quiescent drain; guaranteed –40°C to +85°C operation ensures field reliability. |
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, SPI interface; requires external reference and clock; higher power (39mW at 5Msps). | Higher resolution and speed, but larger footprint (32-lead LFCSP) and no internal clock - demands more board space and timing design effort. | Select when >16-bit ENOB or >2Msps throughput is required; avoid if minimizing BOM count or simplifying timing is prioritized. |
| ADS8860IDRCT | 16-bit, 1Msps, 2.5–5V supply, SPI interface; lower power (11mW at 1Msps); no daisy-chain mode; smaller 10-pin VSSOP package. | Lower speed and no chain mode limit multi-channel scalability; better suited for single-channel, ultra-low-power applications. | Select for cost-sensitive, single-channel systems where 1Msps suffices and PCB area is extremely constrained. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2370IDE-16#PBF uniquely balances 2Msps throughput, internal clock simplicity, daisy-chain capability, and 19mW power in a compact DFN - making it optimal for multi-channel, space-constrained industrial and portable designs requiring deterministic latency.
Availability
LTC2370IDE-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 with guaranteed –40°C to +85°C operation and long-term production continuity.
Supply support for LTC2370IDE-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 LTC2370IDE-16#PBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered for applications demanding high speed, low noise, and low power in harsh thermal environments - particularly where zero-latency conversion and simplified timing are critical.
FAQ
What is the maximum sampling frequency supported by the LTC2370IDE-16#PBF?
The LTC2370IDE-16#PBF supports a maximum sampling frequency of 2Msps, with guaranteed timing parameters including tCYC = 500ns and tCONV = 322ns max across the full –40°C to +85°C temperature range. This enables real-time capture of signals up to 1MHz bandwidth without aliasing or pipeline delay, and the LTC2370IDE-16#PBF maintains this rate with only 19mW power consumption.
Does the LTC2370IDE-16#PBF require an external clock source?
No, the LTC2370IDE-16#PBF features an internal oscillator that sets the conversion time, eliminating the need for an external clock source. This simplifies system timing design and improves jitter immunity. External SCK is still required for serial data transfer, but the core conversion timing is self-contained - a key differentiator of the LTC2370IDE-16#PBF versus many competing SAR ADCs.
Can the LTC2370IDE-16#PBF interface directly with a 1.8V microcontroller?
Yes, the LTC2370IDE-16#PBF supports 1.8V–5V logic levels via its OVDD pin. When OVDD = 1.8V, VIH = 1.44V min and VIL = 0.36V max, ensuring reliable communication with 1.8V I/O domains without level-shifting circuitry. The SDO output, BUSY indicator, and RDL/SDI input all operate referenced to OVDD, making the LTC2370IDE-16#PBF compatible with mixed-voltage systems.
What is the purpose of the CHAIN pin on the LTC2370IDE-16#PBF?
The CHAIN pin (Pin 1) configures the LTC2370IDE-16#PBF's serial interface mode: when low, RDL/SDI functions as a bus-enable input for standalone operation; when high, RDL/SDI becomes a serial data input enabling daisy-chain cascading of multiple LTC2370IDE-16#PBF devices. This allows synchronous readout of N converters using only one SCK and one SDO line - a critical feature for channel-dense data acquisition systems using the LTC2370IDE-16#PBF.
How does the LTC2370IDE-16#PBF achieve low power consumption at high speed?
The LTC2370IDE-16#PBF achieves 19mW at 2Msps through optimized analog circuit design and automatic power-down between conversions. Its internal power management reduces supply current to 0.9µA in shutdown, scaling dynamically with sample rate. Unlike pipeline ADCs, the SAR architecture avoids continuous bias current, and the LTC2370IDE-16#PBF's 2.5V-only analog supply further minimizes quiescent loss - delivering industry-leading efficiency for 16-bit, 2Msps performance.
LTC2370IDE-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-DFN (4x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2370IDE-16#PBF FAQ
1.How can I place an order for LTC2370IDE-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2370IDE-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 LTC2370IDE-16#PBF reliable?
The price and inventory of LTC2370IDE-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 LTC2370IDE-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2370IDE-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2370IDE-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2370IDE-16#PBF?
LTC2370IDE-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2370IDE-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 LTC2370IDE-16#PBF?
For technical support, including LTC2370IDE-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2370IDE-16#PBF requirements.
6.How does Aetrix verify that LTC2370IDE-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2370IDE-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 LTC2370IDE-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2370IDE-16#PBF?
All LTC2370IDE-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2370IDE-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 LTC2370IDE-16#PBF part is unused and in its original packaging.
Return procedure for LTC2370IDE-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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