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Texas Instruments ADS7886SDCKT
- Part No.:
- ADS7886SDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ADS7886SDCKT.pdf
- Description:
- IC ADC 12BIT SAR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,261
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Product details
Overview
ADS7886SDCKT from Texas Instruments is a 12-bit, 1-MSPS successive-approximation register (SAR) analog-to-digital converter with integrated sample-and-hold, operating from 2.35 V to 5.25 V supply, delivering 72.25-dB SINAD and –84-dB THD at 100 kHz input, and consuming only 3.9 mW at 3-V supply - deployed in battery-powered data acquisition and motor current sensing.
For engineers reviewing the ADS7886SDCKT datasheet, ADS7886SDCKT pinout, ADS7886SDCKT application, or ADS7886SDCKT equivalent, this page delivers verified electrical specs, SC70-6 package mapping, functional mode timing, power-down behavior, and real-world interface constraints for high-speed micro-power ADC selection.
Technical Context
The ADS7886SDCKT implements a capacitor-based SAR architecture with zero-latency conversion, sampling on the falling edge of CS and outputting 12-bit MSB-first serial data over SDO synchronized to SCLK. Its internal reference is derived directly from VDD, supporting unipolar 0–VDD input range without external reference components.
It supports two functional modes: normal operation (16-clock cycle, 1-MSPS throughput) and power-down mode (entered between 2nd and 10th SCLK falling edge), with 1 µA quiescent current and 1 µs wake-up time. Digital inputs tolerate up to 5.25 V regardless of VDD level, easing mixed-supply interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - provides 4096 discrete output codes for precision measurement applications. |
| Sample Rate | 1 MSPS - enables real-time capture of signals up to 500 kHz (Nyquist-limited) in closed-loop control systems. |
| SINAD / THD | 72.25 dB / –84 dB at 100 kHz - ensures high-fidelity digitization for optical sensor and baseband RF signal chains. |
| Supply Range | 2.35 V to 5.25 V - supports direct connection to Li-ion battery rails (3.0–4.2 V) or 5-V industrial logic domains. |
| Power Dissipation | 3.9 mW at 3 V / 1 MSPS - enables continuous operation in thermally constrained handheld medical instruments. |
| Input Bandwidth | 15 MHz (–3 dB) - accommodates fast transient signals in motor bus voltage monitoring without external anti-aliasing filter complexity. |
| Power-Down Current | 1 µA - reduces system standby power in duty-cycled sensor nodes where ADC is active <1% of time. |
Pinout & Package
The ADS7886SDCKT is packaged in a 6-pin SC70 (DCK) footprint measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable instrumentation and optical modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply and internal reference source | Supplies core logic and sets full-scale ADC range (0 to VDD); must be decoupled with 1-µF + 10-nF capacitors placed adjacent to pin. |
| GND | Analog and digital ground reference | Single ground plane required; separates noisier digital return paths from sensitive analog input traces to preserve INL performance. |
| VIN | Analog input signal node | Unipolar single-ended input; requires low-impedance drive (<200 Ω) or buffer (e.g., OPA365) to meet specified AC performance. |
| SCLK | Serial clock input | Accepts up to 20-MHz CMOS clock; falling edges control data output timing and conversion sequencing. |
| SDO | Serial data output | 3-state open-drain compatible output; drives MSB-first 12-bit word preceded by four leading zeros; level referenced to VDD. |
| CS | Chip select (active-low) | Falling edge initiates sampling and conversion; rising edge during power-down window (2nd–10th SCLK) forces low-power state. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Sampling triggered precisely on CS falling edge - eliminates pipeline delay critical for real-time feedback in motor control loops. |
| Wide digital input voltage tolerance | Digital inputs accept up to 5.25 V independent of VDD - enables direct interface with 5-V microcontrollers while powered from 2.35-V battery rails. |
| Integrated sample-and-hold | No external hold capacitor required - simplifies BOM and layout for miniature DAQ systems targeting <3 mm² board area. |
| Low acquisition time | 325 ns - allows full settling of input transients before conversion start, reducing need for aggressive external filtering. |
| High ESD robustness | ±3000-V HBM rating - ensures reliability during automated PCB assembly and field handling in industrial environments. |
Applications
| Motor Current Sensing | Optical Sensor Interface |
|---|---|
Use Scenario: Real-time phase current measurement in BLDC motor drives using shunt resistor and op-amp conditioning. IC Role / Device Role / Timing Role: ADC digitizes amplified shunt voltage at 1-MSPS with zero latency to feed current loop controller. Use Value: 12-bit resolution and 15-MHz input bandwidth capture fast current spikes during commutation without aliasing. | Use Scenario: Digitizing photodiode or MEMS mirror position feedback in DWDM optical switching modules. IC Role / Device Role / Timing Role: High-SNR front-end ADC converting analog position or intensity signals for closed-loop optical alignment. Use Value: 72.25-dB SINAD preserves dynamic range needed to resolve sub-micron displacement changes in optical path length. |
| Battery-Powered DAQ | Medical Instrumentation |
Use Scenario: Portable environmental sensor node logging temperature, pressure, and gas concentration with ultra-low average power budget. IC Role / Device Role / Timing Role: Low-power ADC activated intermittently via MCU to acquire conditioned analog sensor outputs. Use Value: 1-µA power-down current extends battery life to >5 years in 1-sampling-per-minute duty cycle configurations. | Use Scenario: ECG front-end signal chain in handheld patient monitors requiring clinical-grade accuracy and compact form factor. IC Role / Device Role / Timing Role: Precision ADC capturing filtered biopotential waveforms with minimal added noise or distortion. Use Value: ±1.25 LSB INL and –84-dB THD meet AAMI EC11 requirements for diagnostic-level waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7887SDCKT | 10-bit resolution, identical SC70-6 package and pinout, same 1-MSPS rate and 2.35–5.25-V supply range. | Lower resolution suitable for cost-sensitive industrial sensors where 10-bit quantization suffices. | Select when system SNR requirements are ≤60 dB and BOM cost reduction is prioritized over precision. |
| ADS8860IDRCT | 16-bit resolution, 1-MSPS, SPI-compatible, but requires external reference and operates from 2.7–3.6 V only. | Higher precision for laboratory-grade measurements; incompatible supply and reference architecture. | Choose only if 16-bit resolution is mandatory and system can accommodate separate reference and tighter supply regulation. |
Compared with ADS7887SDCKT and ADS8860IDRCT, the ADS7886SDCKT uniquely balances 12-bit precision, ultra-low power, wide supply flexibility, and self-referenced operation - making it optimal for space- and energy-constrained embedded systems where external references or higher bit depth are unnecessary.
Availability
ADS7886SDCKT is available at Aetrix Electronics and suitable for motor current sensing, optical sensor interface, battery-powered DAQ, and medical instrumentation requiring stable component supply across automotive-grade temperature ranges (–40°C to 125°C).
Supply support for ADS7886SDCKT 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and low-power design.
The ADS7886SDCKT belongs to TI's micro-power miniature SAR ADC family, engineered for high-speed, low-energy signal acquisition in portable, industrial, and medical equipment where size, power, and accuracy are co-constrained.
FAQ
What is the maximum SCLK frequency supported by the ADS7886SDCKT?
The ADS7886SDCKT supports a maximum SCLK frequency of 20 MHz, enabling its full 1-MSPS throughput capability. At this clock rate, the conversion time is 760–800 ns, and the device outputs 12-bit data in MSB-first format with four leading zeros over the SDO line. Exceeding 20 MHz violates timing specifications and risks invalid conversions or latch-up.
Does the ADS7886SDCKT require an external voltage reference?
No, the ADS7886SDCKT does not require an external voltage reference. It uses its VDD supply as the internal reference, establishing a unipolar input range of 0 V to VDD. This simplifies design, reduces component count, and eliminates reference drift errors - though system-level accuracy remains dependent on VDD stability and noise.
How does the power-down mode function on the ADS7886SDCKT?
The ADS7886SDCKT enters power-down mode when CS goes high between the 2nd and 10th falling edge of SCLK after conversion initiation. In this state, supply current drops to 1 µA. Recovery requires a dummy CS-low cycle ≥10 SCLK edges, followed by 1 µs stabilization before valid conversion resumes. This mode is ideal for burst-mode sensing applications.
What is the input impedance and recommended driver for the VIN pin of the ADS7886SDCKT?
The ADS7886SDCKT VIN pin exhibits 21 pF input capacitance and requires a low-impedance source (<200 Ω) to achieve rated AC performance. For demanding applications, TI recommends the OPA365 op-amp as a driver due to its 50-MHz bandwidth, 4.5 nV/√Hz noise, and fast settling - ensuring full-scale step response within the 325-ns acquisition window.
Is the ADS7886SDCKT pin-compatible with other devices in the ADS78xx family?
The ADS7886SDCKT shares the same 6-pin SC70 (DCK) package and pinout with ADS7887SDCKT (10-bit) and ADS7888SDCKT (8-bit), enabling drop-in resolution scaling within the same PCB footprint. However, it is not pin-compatible with ADS7866/67/68 (DBV/SOT-23 packages) due to differing pin assignments and thermal pad configurations.
ADS7886SDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.35V ~ 5.25V
- Voltage - Supply, Digital:
- 2.35V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- SC-70-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7886SDCKT FAQ
1.How can I place an order for ADS7886SDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7886SDCKT 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 ADS7886SDCKT reliable?
The price and inventory of ADS7886SDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7886SDCKT is usually 5 days.
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4.How is shipping managed for ADS7886SDCKT?
ADS7886SDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7886SDCKT 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 ADS7886SDCKT?
For technical support, including ADS7886SDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7886SDCKT requirements.
6.How does Aetrix verify that ADS7886SDCKT is sourced from the original manufacturer or authorized distributors?
All ADS7886SDCKT 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 ADS7886SDCKT meets industry standards.
7.What is the process for return or replacement of ADS7886SDCKT?
All ADS7886SDCKT units undergo pre-shipment inspection (PSI). If there is an issue with ADS7886SDCKT, 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 ADS7886SDCKT part is unused and in its original packaging.
Return procedure for ADS7886SDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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