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Texas Instruments ADS7888SDCKT
- Part No.:
- ADS7888SDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ADS7888SDCKT.pdf
- Description:
- IC ADC 8BIT SAR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:246
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Product details
Overview
ADS7888SDCKT from Texas Instruments is an 8-bit, 1.25-MSPS successive-approximation register (SAR) analog-to-digital converter in a 6-pin SC70 package. It features zero latency, unipolar input range (0 V to VDD), ±0.15 LSB INL, 49.5 dB SINAD at 100 kHz, and operates from 2.35 V to 5.25 V supply - optimized for battery-powered sensor interfaces and high-speed closed-loop control.
For engineers reviewing the ADS7888SDCKT datasheet, ADS7888SDCKT pinout, ADS7888SDCKT application, or ADS7888SDCKT equivalent, this page delivers verified electrical specs, validated SC70 package mapping, confirmed timing behavior at 25 MHz SCLK, and real-world use cases in optical sensing and motor current monitoring - all derived from TI's production-grade SLAS468A datasheet.
Technical Context
The ADS7888SDCKT implements a capacitor-based SAR architecture with integrated sample-and-hold, sampling on the falling edge of CS and outputting 8-bit MSB-first data over a 3-wire SPI-compatible serial interface (CS, SCLK, SDO). Its conversion completes in 480 ns at 25 MHz SCLK, with acquisition time of 206 ns and aperture delay of 5 ns.
It supports wide-supply operation (2.35–5.25 V), exhibits rail-to-rail unipolar input range referenced to VDD, and includes power-down mode drawing only 1 µA (SCLK off). Digital inputs tolerate up to 5.25 V regardless of VDD level - enabling interoperability with mixed-voltage systems without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes; sufficient for cost-sensitive sensor digitization where high dynamic range is not required. |
| Sample Rate | 1.25 MSPS - supports real-time capture of signals up to ~600 kHz (Nyquist-limited), suitable for motor current feedback loops. |
| INL / DNL | ±0.15 LSB / ±0.1 LSB - ensures monotonicity and minimal code-width variation; critical for accurate linear transducer readout. |
| SINAD / THD | 49.5 dB / –67.5 dB at 100 kHz - defines usable signal bandwidth (~10-bit ENOB); adequate for optical sensor and baseband applications. |
| Supply Range | 2.35 V to 5.25 V - enables direct connection to Li-ion (3.0–4.2 V), 3.3-V, or 5-V system rails without regulation overhead. |
| Power-Down Current | 1 µA - extends battery life in duty-cycled measurement systems such as portable medical instrumentation. |
| Input Bandwidth | 15 MHz (–3 dB) - supports fast step response (160 ns) and overvoltage recovery, essential for transient-rich industrial sensing. |
Pinout & Package
ADS7888SDCKT is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply and internal reference | Supplies core logic and ADC reference; unipolar full-scale range is 0 V to VDD - no external reference needed. |
| 2 - GND | Analog and digital ground reference | Single ground pin serves both domains; requires low-impedance connection to minimize noise coupling into SAR core. |
| 3 - VIN | Analog input | Unipolar single-ended input; source impedance ≤200 Ω recommended to maintain specified INL/DNL performance. |
| 4 - SCLK | Serial clock input | Drives internal state machine; supports up to 25 MHz - enables 1.25 MSPS throughput with 16-clock cycle per conversion. |
| 5 - SDO | Serial data output | 3-state, MSB-first output; transitions to high-impedance after 16th SCLK falling edge to avoid bus contention. |
| 6 - CS | Chip select (active-low) | Initiates sampling on falling edge; must remain low for full 16-clock cycle; minimum pulse width 25 ns at 3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Eliminates pipeline delay - output reflects sampled value within one serial frame; critical for real-time control feedback. |
| Rail-to-rail digital input tolerance | Digital inputs accept up to 5.25 V regardless of VDD (as low as 2.35 V), simplifying interface with 5-V microcontrollers or FPGAs. |
| Integrated sample-and-hold | Removes need for external SHA; reduces BOM count and layout area while maintaining 15 MHz input bandwidth. |
| Low-power power-down mode | 1 µA quiescent current with SCLK disabled - enables microamp-level sleep states in battery-operated data loggers. |
| Wide temperature range | Specified from –40°C to +125°C - supports deployment in automotive engine compartments and industrial motor drives. |
Applications
| Optical Sensor Interface | Motor Current Monitoring |
|---|---|
|
Use Scenario: Digitizing output of photodiode amplifiers or MEMS-based optical switches in DWDM systems. IC Role / Device Role / Timing Role: High-speed, low-latency ADC capturing analog photocurrent signals with minimal added noise. Use Value: 15 MHz input bandwidth and 49.5 dB SINAD preserve signal fidelity across optical channel monitoring bands. |
Use Scenario: Sampling shunt voltage in digital motor drives for real-time current loop control. IC Role / Device Role / Timing Role: Single-ended 8-bit ADC synchronized to PWM cycles via CS-triggered sampling. Use Value: Zero-latency operation ensures current feedback aligns precisely with switching events, improving torque stability. |
| Battery-Powered Medical Instrumentation | High-Speed Closed-Loop Control |
|
Use Scenario: Portable ECG or glucose meter front-end digitizing low-amplitude biopotential signals. IC Role / Device Role / Timing Role: Low-power, rail-to-rail ADC interfacing directly to op-amp output stages. Use Value: 1 µA power-down current and 2.35 V minimum supply extend operating time on coin-cell or LiPo batteries. |
Use Scenario: Real-time position/velocity feedback in servo controllers using Hall-effect or resolver sensors. IC Role / Device Role / Timing Role: Fast 1.25 MSPS ADC feeding FPGA or DSP for sub-microsecond loop updates. Use Value: 480 ns conversion time and deterministic 16-clock interface enable tight timing margins in <1 µs control cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7868IDBVR | 1.2-V to 3.6-V supply range; 300-KSPS max rate; 6-pin SOT-23 only; ±0.3 LSB INL. | Better suited for ultra-low-voltage (e.g., 1.8-V) battery systems but lacks 1.25-MSPS speed and 5-V tolerance. | Select when operating below 2.35 V or requiring lower supply current at reduced throughput. |
| ADS7886IDCKT | 10-bit resolution; same 1.25-MSPS rate; identical SC70-6 package; ±0.35 LSB INL; 61 dB SINAD. | Provides higher precision for applications needing >8-bit linearity (e.g., calibrated sensor outputs). | Choose when resolution and dynamic performance outweigh cost sensitivity - shares footprint and interface compatibility. |
Compared with ADS7888SDCKT, ADS7868IDBVR trades speed and voltage flexibility for lower-voltage operation, while ADS7886IDCKT offers higher resolution and SNR in the same package - enabling drop-in upgrades where precision is prioritized over cost or power.
Availability
ADS7888SDCKT is available at Aetrix Electronics and suitable for optical networking, motor control, battery-powered instrumentation, and high-speed closed-loop systems requiring stable component supply, guaranteed traceability, and long-term lifecycle support.
Supply support for ADS7888SDCKT 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 ADS788x family was engineered for space-constrained, power-sensitive applications demanding fast, reliable digitization - including portable medical devices, industrial sensors, and communications infrastructure.
FAQ
What is the maximum SCLK frequency supported by ADS7888SDCKT?
The ADS7888SDCKT supports up to 25 MHz SCLK across its full supply range (2.35 V to 5.25 V), enabling its rated 1.25-MSPS throughput. At this clock rate, conversion time is 480 ns, and timing parameters such as setup/hold times remain within specification - confirmed in Section 8.7 of the SLAS468A datasheet.
Does ADS7888SDCKT require an external reference voltage?
No, ADS7888SDCKT does not require an external reference. It uses VDD as its internal reference, resulting in a unipolar input range of 0 V to VDD. This eliminates external reference components and simplifies layout - a key advantage for compact, cost-sensitive designs.
What is the power consumption of ADS7888SDCKT at 3 V and 1.25 MSPS?
At 3 V supply and 1.25-MSPS throughput, ADS7888SDCKT draws 2 mA typical supply current, equating to 3.8 mW power dissipation. This value is measured under static conditions with SCLK active and includes both analog and digital circuitry - per Electrical Characteristics Table 8.6 in the datasheet.
Can ADS7888SDCKT interface directly with a 5-V microcontroller?
Yes, ADS7888SDCKT accepts digital input voltages up to 5.25 V regardless of VDD level (as low as 2.35 V), allowing direct connection to 5-V logic without level shifters. However, its SDO output swing remains VDD-referenced - so output levels scale with VDD, not input voltage.
What package type is ADS7888SDCKT supplied in, and what are its dimensions?
ADS7888SDCKT is supplied in a 6-pin SC70 (DCK) package with nominal body dimensions of 2.00 mm × 1.25 mm. This ultra-small outline enables high-density routing in portable and wearable electronics - distinct from the larger SOT-23 option used in other variants like ADS7888DBVT.
ADS7888SDCKT 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:
- 8
- Sampling Rate (Per Second):
- 1.25M
- 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:
- -
ADS7888SDCKT FAQ
1.How can I place an order for ADS7888SDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7888SDCKT 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 ADS7888SDCKT reliable?
The price and inventory of ADS7888SDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7888SDCKT is usually 5 days.
3.What payment methods are accepted for ADS7888SDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7888SDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7888SDCKT?
ADS7888SDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7888SDCKT 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 ADS7888SDCKT?
For technical support, including ADS7888SDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7888SDCKT requirements.
6.How does Aetrix verify that ADS7888SDCKT is sourced from the original manufacturer or authorized distributors?
All ADS7888SDCKT 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 ADS7888SDCKT meets industry standards.
7.What is the process for return or replacement of ADS7888SDCKT?
All ADS7888SDCKT units undergo pre-shipment inspection (PSI). If there is an issue with ADS7888SDCKT, 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 ADS7888SDCKT part is unused and in its original packaging.
Return procedure for ADS7888SDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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