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Analog Devices Inc. LTC2370CMS-16#PBF
- Part No.:
- LTC2370CMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2370CMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
LTC2370CMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 2 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5 V supply. It delivers 94 dB SNR (typ), ±0.85 LSB INL (max), and guaranteed no missing codes at full 16-bit resolution, with VREF programmable from 2.5 V to 5.1 V. Its low 19 mW power consumption and internal conversion clock make it suitable for high-speed portable instrumentation and medical imaging front-ends.
For engineers reviewing the LTC2370CMS-16#PBF datasheet, LTC2370CMS-16#PBF pinout, LTC2370CMS-16#PBF application, or LTC2370CMS-16#PBF equivalent, key selection criteria include guaranteed 16-bit linearity over temperature, daisy-chain SPI interface compatibility with 1.8–5 V logic, absence of pipeline latency, and operation up to 125°C in H-grade variants - all critical for precision data acquisition in space-constrained, thermally demanding systems.
Technical Context
The LTC2370CMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling the pseudo-differential input (IN+–IN−) during acquisition and performing binary-search conversion without pipeline delay. Its internal oscillator fixes tCONV at 278–322 ns, eliminating external clock dependency while enabling deterministic 500 ns minimum cycle time.
It supports two operational modes via the CHAIN pin: normal mode (RDL/SDI as bus enable) and daisy-chain mode (RDL/SDI as serial data input), allowing synchronous multi-ADC readout. The analog input features 45 pF sampling capacitance and 40 Ω switch on-resistance, requiring careful drive circuit design to meet 16-bit settling within 165 ns acquisition time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and full-scale quantization granularity of 76 µV at 5 V reference. |
| Sampling Rate | 2 Msps - enables real-time capture of signals up to 1 MHz Nyquist bandwidth with no cycle latency. |
| SNR | 94 dB (typ, fIN = 2 kHz, VREF = 5 V) - defines effective noise floor of ≈ 1.2 µVRMS for high-fidelity signal digitization. |
| INL | ±0.85 LSB (max) - ensures absolute accuracy ≤ ±0.0013% of full scale, critical for calibrated measurement systems. |
| Power Dissipation | 19 mW at 2 Msps - enables high-throughput operation in thermally constrained battery-powered devices. |
| Reference Range | 2.5 V to 5.1 V - allows flexible dynamic range scaling and compatibility with precision references like LTC6655-5. |
| Operating Temp | 0°C to 70°C - specified for commercial-grade MSOP package (LTC2370CMS-16#PBF). |
Pinout & Package
Package: 16-lead plastic MSOP (3 mm × 4.9 mm), exposed pad not present (DFN variant has exposed GND pad; MSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Selects daisy-chain (high) or normal bus-enable (low) operation; referenced to OVDD voltage level. |
| VDD (2) | Analog core supply | 2.5 V ±62.5 mV supply; bypassed with 10 µF ceramic capacitor to ensure stable SAR conversion reference. |
| GND (3,6,10,16) | Analog/digital ground | Four dedicated GND pins minimize ground bounce and separate analog return paths from digital switching currents. |
| IN+ (4) | Pseudo-differential analog input (+) | Accepts 0 V to VREF input; sampled via 45 pF capacitor and 40 Ω switch - requires low-impedance drive for 16-bit settling. |
| IN– (5) | Pseudo-differential analog input (–) | Common-mode sense node; input range ±100 mV relative to GND - must connect directly to ground plane or remote sense point. |
| REF (7,8) | Reference voltage inputs | Dual-pin connection for low-inductance decoupling; accepts 2.5–5.1 V; draws pulsed current up to 1.3 mA at 2 Msps. |
| CNV (9) | Convert trigger input | Rising-edge–initiated conversion start; powers up ADC core and triggers acquisition phase with no setup requirement. |
| BUSY (11) | Conversion status indicator | Active-high open-drain output signaling conversion progress; timing-critical for SDO read synchronization. |
| RDL/SDI (12) | Serial interface control/data input | In normal mode: bus enable; in chain mode: serial data input - supports cascaded multi-ADC configurations. |
| SCK (13) | Serial clock input | Accepts 100 MHz max clock (10 ns period); controls SDO timing and determines maximum SPI throughput. |
| SDO (14) | Serial data output | MSB-first straight-binary output; valid 9.5 ns after SCK↑; compatible with 1.8–5 V host logic levels via OVDD. |
| OVDD (15) | I/O interface supply | 1.71–5.25 V digital supply; sets logic thresholds for all digital pins - enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 16 bits | Guaranteed monotonicity across full temperature range - eliminates code ambiguity in closed-loop control and calibration applications. |
| Internal conversion clock | Eliminates need for external timing source or clock distribution network - simplifies PCB layout and reduces jitter-sensitive components. |
| Auto power-down between conversions | Reduces idle power to 19 µW at 2 ksps - extends battery life in intermittent-sampling instrumentation without firmware intervention. |
| SPI-compatible daisy-chain mode | Enables synchronized sampling of multiple LTC2370CMS-16#PBF devices using single SCK/SCKCH line - ideal for multi-channel DAQ systems. |
| Pseudo-differential unipolar input | Rejects common-mode noise on IN+ and IN− while supporting 0 V to VREF signal swing - simplifies sensor interface versus true differential designs. |
Applications
| Medical Imaging Front-End | High-Speed Portable DAQ |
|---|---|
|
Use Scenario: Digitizing ultrasound echo signals or CT detector outputs requiring >90 dB dynamic range and minimal harmonic distortion. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs at 2 Msps with deterministic latency and no pipeline bubbles. Use Value: 94 dB SNR and –112 dB THD preserve weak echo amplitudes and tissue contrast resolution without post-processing correction. |
Use Scenario: Battery-powered field test equipment acquiring vibration, acoustic, or ECG waveforms with 16-bit fidelity. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC interfaced to ARM Cortex-M microcontroller via SPI. Use Value: 19 mW active power and auto power-down enable >8-hour runtime on 2000 mAh Li-ion battery at 100 kSPS average rate. |
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|
Use Scenario: Real-time monitoring of motor current, pressure transducers, or thermal sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision analog input channel with guaranteed 16-bit linearity across 0°C to 70°C ambient. Use Value: ±0.85 LSB INL ensures <±0.0013% full-scale error without per-unit calibration - reducing manufacturing test overhead. |
Use Scenario: Multi-channel stimulus-response testing of RF components or power converters requiring synchronized sampling. IC Role / Device Role / Timing Role: One of multiple LTC2370CMS-16#PBF units daisy-chained for simultaneous 16-bit capture across 8+ channels. Use Value: Daisy-chain mode eliminates timing skew between channels and reduces FPGA I/O count by 50% vs. parallel interfaces. |
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, but requires external reference and separate VIO supply; no daisy-chain mode. | Higher resolution and speed, but larger footprint (32-lead LFCSP) and higher power (39 mW); lacks integrated CHAIN functionality. | Choose when 18-bit resolution and 5 Msps are mandatory, and board area/power budget allow larger package and dual supplies. |
| ADS8860IRGET | 16-bit, 1 Msps, 2.5–5 V supply, SPI interface, but only 87 dB SNR (typ) and ±1.25 LSB INL (max); no daisy-chain support. | Lower performance envelope; optimized for ultra-low power (1.5 mW at 100 kSPS) rather than high-speed fidelity. | Choose for cost-sensitive, lower-bandwidth applications where 94 dB SNR and daisy-chain are not required. |
Compared with AD7960BCPZ-RL7 and ADS8860IRGET, the LTC2370CMS-16#PBF uniquely balances 2 Msps throughput, 94 dB SNR, daisy-chain capability, and 19 mW power in a compact MSOP - making it optimal for space-constrained, multi-channel, high-fidelity acquisition where timing determinism and thermal stability are prioritized.
Availability
LTC2370CMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging front-ends, portable high-speed data acquisition, and industrial process monitoring requiring stable component supply and long-term production continuity.
Supply support for LTC2370CMS-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 belongs to ADI's precision SAR ADC product line, engineered for applications demanding high speed, low noise, and guaranteed 16-bit accuracy without missing codes - especially where thermal robustness and simplified timing are essential.
FAQ
What is the maximum sampling rate supported by the LTC2370CMS-16#PBF?
The LTC2370CMS-16#PBF supports a maximum sampling rate of 2 Msps, with a guaranteed minimum conversion cycle time of 500 ns. This rate is achievable across its full operating temperature range (0°C to 70°C) and with VDD = 2.5 V, OVDD = 1.8–5 V, and VREF ≥ 2.5 V. No pipeline latency or cycle-to-cycle variation affects throughput consistency.
Does the LTC2370CMS-16#PBF require an external reference voltage?
Yes, the LTC2370CMS-16#PBF requires an external reference voltage applied to the REF pins (7 and 8). It accepts VREF from 2.5 V to 5.1 V and draws pulsed current up to 1.3 mA at 2 Msps. For optimal performance, Linear Technology recommends the LTC6655-5 reference, which provides 0.025% initial accuracy and 2 ppm/°C drift - matching the ADC's precision requirements.
How does the daisy-chain mode work on the LTC2370CMS-16#PBF?
Daisy-chain mode is enabled by driving the CHAIN pin (1) high. In this mode, RDL/SDI becomes a serial data input, allowing multiple LTC2370CMS-16#PBF devices to share one SCK line and be read out sequentially. Each device shifts its 16-bit result into the next, enabling synchronized multi-channel acquisition without additional control lines or timing skew.
What is the significance of the pseudo-differential input architecture in the LTC2370CMS-16#PBF?
The pseudo-differential input (IN+ and IN−) rejects common-mode noise while accepting unipolar 0 V to VREF signals. IN− serves as a ground sense node (±100 mV range), not a true differential input - simplifying sensor interfacing compared to fully differential architectures. This architecture maintains 94 dB SNR and supports remote ground sensing for improved noise immunity in noisy industrial environments.
Can the LTC2370CMS-16#PBF operate with a 1.8 V I/O interface?
Yes, the LTC2370CMS-16#PBF supports 1.8 V I/O logic through its OVDD pin (15), which accepts 1.71 V to 5.25 V. All digital pins (SCK, SDO, RDL/SDI, BUSY, CNV, CHAIN) are referenced to OVDD, enabling direct interface to 1.8 V FPGAs or microcontrollers without level shifters - while maintaining full 2 Msps SPI timing compliance.
LTC2370CMS-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- 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-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2370CMS-16#PBF FAQ
1.How can I place an order for LTC2370CMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2370CMS-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 LTC2370CMS-16#PBF reliable?
The price and inventory of LTC2370CMS-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 LTC2370CMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2370CMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2370CMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2370CMS-16#PBF?
LTC2370CMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2370CMS-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 LTC2370CMS-16#PBF?
For technical support, including LTC2370CMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2370CMS-16#PBF requirements.
6.How does Aetrix verify that LTC2370CMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2370CMS-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 LTC2370CMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2370CMS-16#PBF?
All LTC2370CMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2370CMS-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 LTC2370CMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2370CMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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