My Inquiry
My Account
Analog Devices Inc. DC1783A-B
- Part No.:
- DC1783A-B
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1783A-B.pdf
- Description:
- BOARD SAR ADC LTC2378-16
- Quantity:
- Payment:
- Shipping:
Inventory:2,588
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2378-16 from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps successive approximation register (SAR) analog-to-digital converter with ±0.5 LSB INL max, 97 dB SNR at 2 kHz, and fully differential ±VREF input range (2.5 V to 5.1 V). It operates from a single 2.5 V supply, consumes 13.5 mW at full speed, and features digital gain compression (DGC) for single-supply amplifier interfacing - used in high-speed data acquisition and precision instrumentation.
For engineers reviewing the LTC2378-16 datasheet, LTC2378-16 pinout, LTC2378-16 application, or LTC2378-16 equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation, internal conversion clock, SPI-compatible daisy-chain interface, 125°C extended temperature support, and DGC-enabled 0.5 V to 4.5 V input swing with 5 V reference.
Technical Context
The LTC2378-16 implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, achieving zero-cycle latency and no pipeline delay. Its internal oscillator eliminates external clock dependency, while auto power-down scales current draw with sampling rate - 13.5 µW at 1 kSPS.
Digital gain compression (DGC) remaps the ADC's transfer function so zero-scale shifts from 0 V to 0.1·VREF and full-scale from VREF to 0.9·VREF, enabling rail-to-rail input signal conditioning using only a single positive supply for the driving amplifier - preserving full 16-bit resolution without analog attenuation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels with guaranteed no missing codes. |
| Sampling Rate | 1 Msps - supports real-time capture of signals up to 34 MHz input bandwidth (–3 dB). |
| SNR | 97 dB (typ, fIN = 2 kHz, VREF = 5 V) - enables >15.8 effective bits under typical conditions. |
| INL | ±0.5 LSB (max) - ensures monotonicity and accurate end-point linearity for calibration-critical systems. |
| Power @ 1 Msps | 13.5 mW (VDD = 2.5 V) - low dissipation suitable for thermally constrained or battery-assisted instrumentation. |
| Digital Gain Compression | Enabled via REF/DGC pin grounded - redefines full-scale input range to 0.1·VREF to 0.9·VREF, allowing single-supply driver amplifiers. |
| Operating Temperature | –40°C to +125°C (H-grade) - qualified for industrial and harsh-environment embedded control. |
Pinout & Package
Available in 16-lead MSOP and 4 mm × 3 mm DFN packages; both feature exposed thermal pad (GND) for enhanced thermal performance. DFN package includes Pin 17 (exposed pad) soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog inputs | Accept ±VREF fully differential signal; input capacitance 45 pF (sample mode), RON ≈ 40 Ω. |
| REF | Reference voltage input | Supports 2.5 V to 5.1 V external reference; requires 47 µF X5R ceramic decoupling. |
| REF/DGC | Reference/Digital Gain Compression control | Tied to GND to enable DGC; tied to REF to disable - selects between full ±VREF or compressed 0.1–0.9·VREF input range. |
| CNV | Convert trigger input | Rising edge initiates conversion and powers up ADC; no minimum pulse width required. |
| BUSY | Conversion status indicator | Active-high open-drain output signals conversion in progress; logic referenced to VDD. |
| SDO, SCK, RDL/SDI | SPI-compatible serial interface | 2's complement 16-bit output; supports 1.8 V–5 V I/O; daisy-chain mode enabled via CHAIN pin. |
| VDD, OVDD, GND | Analog/digital supplies & ground | VDD = 2.375–2.625 V (2.5 V nominal); OVDD = 1.71–5.25 V (sets I/O logic level); multiple GND pins for noise isolation. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay / zero cycle latency | Enables deterministic real-time sampling - critical for closed-loop control and time-triggered acquisition. |
| Digital Gain Compression (DGC) | Eliminates need for negative supply in front-end amplifiers while retaining full 16-bit ENOB - reduces BOM count and board area. |
| Internal conversion clock | Removes requirement for external timing circuitry - simplifies layout and improves jitter immunity in noisy environments. |
| 1.8 V–5 V I/O compatibility | Interoperates directly with FPGA, MCU, or ASIC I/O banks across voltage domains without level shifters. |
| Guaranteed operation to 125°C | Validated performance over full H-grade temperature range - suitable for engine control, downhole, or industrial motor drives. |
Applications
| Medical Imaging Signal Chain | High-Speed ATE Test Equipment |
|---|---|
|
Use Scenario: Digitizing low-noise, wide-dynamic-range sensor outputs from ultrasound transducer arrays or MRI gradient monitoring circuits. IC Role / Device Role / Timing Role: Primary high-fidelity ADC capturing analog front-end signals at up to 1 Msps with minimal added noise or distortion. Use Value: 97 dB SNR and –122 dB THD preserve weak signal integrity; DGC simplifies ±15 V op-amp interfacing using single 5.5 V rail. |
Use Scenario: High-throughput parametric testing of semiconductor devices requiring precise DC and AC characterization. IC Role / Device Role / Timing Role: Core digitizer in automated test head, synchronized to pattern generator clocks with sub-microsecond latency. Use Value: No missing codes and ±0.5 LSB INL ensure measurement repeatability; daisy-chain SPI allows multi-channel parallel readout without additional GPIO. |
| Portable Precision Instrumentation | Industrial Process Monitoring |
|
Use Scenario: Battery-powered handheld analyzers measuring pH, dissolved oxygen, or chromatographic peaks with microvolt-level resolution. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC operating at adaptive sample rates (1 kSPS to 1 MSPS) to extend runtime. Use Value: 13.5 µW power at 1 kSPS and auto power-down reduce quiescent load; 16-bit resolution captures subtle chemical response gradients. |
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensors in PLC I/O modules deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Isolated analog input channel ADC with robust ESD-tolerant inputs and validated 125°C operation. Use Value: Guaranteed specs over –40°C to +125°C eliminate derating concerns; differential inputs reject common-mode noise from 4–20 mA loop coupling. |
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 | 18-bit, 5 MSPS, 2.5 V supply, no DGC, requires external reference buffer; higher power (34 mW @ 5 MSPS). | Better resolution and speed but lacks integrated DGC and requires more complex analog front-end design. | Choose AD7960 when >16-bit ENOB and >1 MSPS throughput are mandatory, and system power budget permits. |
| ADS8860IRGET | 16-bit, 1 MSPS, 2.5–5 V supply, SPI interface, no DGC, lower SNR (92.5 dB), smaller 3 mm × 3 mm VQFN package. | Lower cost and footprint, but lacks DGC and 125°C rating; SNR and THD less suited for metrology-grade applications. | Choose ADS8860 for space-constrained, cost-sensitive designs where DGC and extended temperature are not required. |
Compared with AD7960BCPZ and ADS8860IRGET, the LTC2378-16 uniquely balances 16-bit accuracy, 1 MSPS speed, ultra-low distortion, and DGC-enabled single-supply drive - making it optimal for compact, thermally demanding, or analog-front-end-simplified systems.
Availability
LTC2378-16 is available at Aetrix Electronics and suitable for medical imaging, industrial process control, and portable instrumentation requiring stable component supply, long-term lifecycle assurance, and guaranteed extended-temperature availability.
Supply support for LTC2378-16 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 LTC2378-16 belongs to ADI's precision SAR ADC product line, engineered for applications demanding high dynamic range, low power, and simplified analog signal chain design - especially where thermal resilience and driver supply simplification are critical.
FAQ
What is the maximum recommended reference voltage for the LTC2378-16?
The LTC2378-16 supports a reference voltage range of 2.5 V to 5.1 V. The absolute maximum rating for the REF pin is 6 V, but operation above 5.1 V is not characterized or guaranteed. For optimal SNR and linearity, 5.0 V is commonly used - delivering 152 µV per LSB and enabling the full 97 dB SNR specification. Using VREF = 5.1 V does not improve resolution and may degrade performance due to increased internal noise coupling.
Does the LTC2378-16 require an external clock source?
No, the LTC2378-16 does not require an external clock source. It integrates an internal oscillator that sets the conversion timing, eliminating external clock dependencies and associated jitter sources. The CNV input serves only as a synchronous trigger - its rising edge initiates conversion, and the internal clock handles all timing. This simplifies system design and improves timing predictability in electrically noisy environments.
How does Digital Gain Compression (DGC) affect the input voltage range of the LTC2378-16?
When DGC is enabled (REF/DGC pin tied to GND), the LTC2378-16 maps zero-scale code to 0.1·VREF and full-scale code to 0.9·VREF, compressing the usable input range to 0.1·VREF to 0.9·VREF. With VREF = 5 V, this yields a 0.5 V to 4.5 V differential input span - providing 0.5 V headroom on each rail to allow single-supply amplifier operation (e.g., LT6350 powered from +5.5 V only), while preserving full 16-bit resolution.
Can the LTC2378-16 operate reliably at 125°C ambient temperature?
Yes, the LTC2378HMS-16 and LTC2378HDE-16 variants are fully specified and tested over –40°C to +125°C ambient temperature. Key parameters including INL (±0.5 LSB max), SNR (≥94.5 dB), and power consumption remain guaranteed across this range. Thermal design must ensure junction temperature stays below 150°C - achievable with proper PCB copper area, thermal vias, and the exposed pad (DFN) or thermal pad (MSOP) soldered to ground.
What is the purpose of the CHAIN pin on the LTC2378-16?
The CHAIN pin configures the LTC2378-16's serial interface mode. When CHAIN = LOW, RDL/SDI functions as a bus-enable input and SDO is tri-stated unless selected. When CHAIN = HIGH, RDL/SDI becomes a serial data input (SDI), enabling daisy-chain configuration where multiple LTC2378-16 devices share one SCK and SDO line - reducing host GPIO count and simplifying multi-channel synchronization in data acquisition systems.
DC1783A-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Number of A/D Converters:
- 1
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 1M
- Data Interface:
- SPI
- Input Range:
- ±VREF
- Power (Typ) @ Conditions:
- 13.5mW @ 1MSPS
- Utilized IC / Part:
- LTC2378-16
- Contents:
- Board(s)
DC1783A-B FAQ
1.How can I place an order for DC1783A-B through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1783A-B 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 DC1783A-B reliable?
The price and inventory of DC1783A-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1783A-B is usually 5 days.
3.What payment methods are accepted for DC1783A-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1783A-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1783A-B?
DC1783A-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1783A-B 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 DC1783A-B?
For technical support, including DC1783A-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1783A-B requirements.
6.How does Aetrix verify that DC1783A-B is sourced from the original manufacturer or authorized distributors?
All DC1783A-B 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 DC1783A-B meets industry standards.
7.What is the process for return or replacement of DC1783A-B?
All DC1783A-B units undergo pre-shipment inspection (PSI). If there is an issue with DC1783A-B, 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 DC1783A-B part is unused and in its original packaging.
Return procedure for DC1783A-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DC1783A-B Tags
-
1083
Adafruit Industries LLC
-
1085
Adafruit Industries LLC
-
ADS7038Q1EVM-PDK
Texas Instruments
-
ADS8688EVM-PDK
Texas Instruments
-
EVAL-AD7606C18FMCZ
Analog Devices Inc.
-
ADS1232REF
Texas Instruments
-
EVAL-AD4134FMCZ
Analog Devices Inc.
-
EVAL-AD7768FMCZ
Analog Devices Inc.
-
ADC128S102EVM
Texas Instruments
-
ADS124S08EVM
Texas Instruments
-
ADC6140EVM-PDK
Texas Instruments
-
ADS7066EVM-PDK
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
