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Texas Instruments ADS7884SDBVT
- Part No.:
- ADS7884SDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS7884SDBVT.pdf
- Description:
- IC ADC 10BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:720
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Product details
Overview
ADS7884SDBVT from Texas Instruments is a 10-bit, 3-MSPS SAR analog-to-digital converter in a 6-pin SOT-23 package, featuring zero latency, ±0.3 LSB INL/DNL, 61.7 dB SINAD at 100 kHz, and operation from 2.7 V to 5.5 V supply. It serves as a high-speed, micro-power ADC for precision signal acquisition in battery-powered motor control sensors and optical networking interfaces.
For engineers reviewing the ADS7884SDBVT datasheet, ADS7884SDBVT pinout, ADS7884SDBVT application, or ADS7884SDBVT equivalent, key selection criteria include its 48-MHz serial interface timing, unipolar 0–VDD input range, 1 µA powerdown current, 30 MHz full-power bandwidth, and guaranteed no-missing-codes performance across –40°C to 125°C.
Technical Context
The ADS7884SDBVT implements a capacitor-based successive approximation register (SAR) architecture with integrated sample-and-hold, sampling on the falling edge of CS and outputting 10-bit MSB-first data over a 16-clock frame (2 leading zeros + 10 data bits + 4 trailing zeros). Its conversion time is 224–240 ns at 5 V with 48-MHz SCLK.
It supports glueless interfacing with microprocessors and DSPs via CMOS-level CS, SCLK, and SDO signals; digital inputs tolerate up to 5.5 V regardless of VDD (2.7–5.5 V), easing mixed-supply system integration and relaxing power-up sequencing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes for high-fidelity digitization of analog sensor or signal chain outputs. |
| Sample Rate | 3 MSPS maximum - enables real-time capture of fast transients in motor current sensing and closed-loop control systems. |
| SINAD / THD | 61.7 dB / –81 dB at 100 kHz - ensures accurate amplitude and harmonic fidelity for baseband radio and optical sensor applications. |
| INL / DNL | ±0.3 LSB - guarantees monotonicity and linearity critical for precision measurement in medical instrumentation and industrial feedback loops. |
| Supply Range | 2.7 V to 5.5 V - supports direct connection to Li-ion battery rails (3.0–3.6 V) or 5-V system buses without level-shifting. |
| Power Dissipation | 6.8 mW at 3 V / 2.5 MSPS - enables continuous high-speed acquisition in energy-constrained portable devices. |
| Input Bandwidth | 30 MHz (–3 dB) - accommodates wideband signals from optical detectors and RF front-end baseband converters. |
Pinout & Package
ADS7884SDBVT is housed in a 6-pin SOT-23 (DBV) package, measuring 2.9 mm × 1.6 mm × 1.0 mm, rated for –40°C to 125°C operation and optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply and internal reference | Supplies core logic and ADC reference; unipolar full-scale range is 0 V to VDD, eliminating external reference need. |
| GND | Analog/digital ground reference | Common return for all analog and digital signals; must be low-impedance and star-connected to minimize noise coupling. |
| VIN | Analog input | Single-ended unipolar input accepting 0–VDD; requires source impedance ≤200 Ω for specified INL/SINAD performance. |
| SCLK | Serial clock input | Drives data output timing; supports up to 48 MHz; falling edges clock out data bits and control state transitions. |
| SDO | Serial data output | 3-state CMOS output delivering 10-bit MSB-first data; driven only when CS is low and enters high-Z when CS goes high. |
| CS | Chip select (active-low) | Initiates sampling on falling edge; controls conversion start, data output enable, and powerdown entry/exit timing windows. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Sampling and conversion begin immediately on CS falling edge-no pipeline delay-enabling deterministic timing in closed-loop systems. |
| Wide digital input voltage tolerance | Digital inputs accept up to 5.5 V even at 2.7-V VDD, allowing direct interfacing with 5-V microcontrollers without level shifters. |
| Ultra-low powerdown current | 1 µA shutdown current minimizes quiescent drain during idle periods in battery-operated data loggers and portable diagnostics. |
| No missing codes guaranteed | Ensures monotonic transfer function across full temperature and supply range-critical for safety-critical motor control and medical monitoring. |
| High-speed serial interface | 48-MHz SCLK support enables compact 2-wire (CS + SCLK) communication, reducing PCB routing complexity vs. parallel ADCs. |
Applications
| Motor Current Sensing | Optical Network Monitoring |
|---|---|
|
Use Scenario: Real-time sampling of shunt voltage in IGBT gate drivers for field-oriented control (FOC) of BLDC motors. IC Role / Device Role / Timing Role: High-speed, low-latency ADC capturing current waveforms at 3 MSPS to feed PWM update cycles. Use Value: ±0.3 LSB INL ensures accurate torque estimation; 30 MHz bandwidth captures switching harmonics; 6.8 mW dissipation avoids thermal derating in compact inverters. |
Use Scenario: Digitizing photodiode output in DWDM channel power monitors for MEMS-based optical switches. IC Role / Device Role / Timing Role: Precision unipolar ADC converting analog photocurrent into digital telemetry for FPGA-based calibration. Use Value: 61.7 dB SINAD preserves dynamic range for low-light detection; 2.7–5.5 V supply range matches optical module LDO outputs; SOT23 footprint saves board area. |
| Battery-Powered Instrumentation | Medical Sensor Front-End |
|
Use Scenario: Portable ECG or pulse oximeter acquiring analog bio-signals with minimal power budget. IC Role / Device Role / Timing Role: Low-power SAR ADC enabling continuous 3-MSPS sampling while maintaining >100-hour battery life on coin cell. Use Value: 1 µA powerdown current extends standby time; 10-bit resolution meets AHA clinical accuracy requirements; small SOT23 package fits wearable form factors. |
Use Scenario: Digitizing amplified EEG or EMG signals in handheld diagnostic tools requiring FDA-grade linearity. IC Role / Device Role / Timing Role: Precision ADC providing monotonic, no-missing-codes conversion for regulatory-compliant waveform reconstruction. Use Value: ±0.3 LSB INL/DNL satisfies IEC 60601-2-51 linearity thresholds; –40°C to 125°C rating supports sterilization and ambient operation; GND-isolated layout simplifies noise mitigation. |
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 |
|---|---|---|---|
| ADS7885SDBVT | 8-bit resolution, ±0.15 LSB INL, 49.8 dB SINAD, same 3-MSPS rate and SOT23-6 package | Lower precision but lower power (5.4 mW at 3 V); suitable where 8-bit resolution suffices for cost-sensitive industrial sensors | Select ADS7885SDBVT when SNR >49 dB and 256-level quantization meet system requirements and BOM cost is prioritized. |
| ADS7867IDBVR | 10-bit, 1-MSPS max, 1.2–3.6 V supply, 8-pin SOIC, ±0.5 LSB INL, 1.8 µA powerdown | Slower speed, wider supply range, larger package; better suited for ultra-low-voltage embedded systems than high-bandwidth apps | Choose ADS7867IDBVR only if operating below 2.7 V or requiring SOIC hand-solderability-do not use for 3-MSPS or SOT23-space-constrained designs. |
Compared with ADS7884SDBVT, ADS7885SDBVT trades resolution and AC performance for lower cost and marginally lower power, while ADS7867IDBVR sacrifices speed and package size for sub-2.7-V compatibility-neither is pin-compatible, and both require PCB layout changes.
Availability
ADS7884SDBVT is available at Aetrix Electronics and suitable for motor current sensing, optical network monitoring, and battery-powered instrumentation requiring stable component supply, extended temperature operation, and verified TI production lot traceability.
Supply support for ADS7884SDBVT 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, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and industrial-grade IC design.
The ADS7884SDBVT belongs to TI's micro-power miniature SAR ADC family, engineered for high-speed, low-latency digitization in space- and energy-constrained applications such as motor drives, optical modules, and portable medical devices.
FAQ
What is the maximum sample rate supported by the ADS7884SDBVT?
The ADS7884SDBVT supports a maximum throughput rate of 3 MSPS when operated with a 48-MHz SCLK and VDD between 3.6 V and 5.5 V. At lower supply voltages (2.7–3.6 V), the maximum rate is 2.5 MSPS. This is confirmed in the SLAS567 datasheet timing specifications and applies directly to the ADS7884SDBVT device under specified temperature and supply conditions.
Does the ADS7884SDBVT require an external reference voltage?
No, the ADS7884SDBVT uses its VDD pin as the internal reference, establishing a unipolar input range of 0 V to VDD. No external reference is needed, simplifying BOM and layout. This is explicitly stated in the "Analog Input" section of the datasheet and validated across all operating conditions for the ADS7884SDBVT.
What is the power consumption of the ADS7884SDBVT at 3 V and 2.5 MSPS?
At VDD = 3.0 V and 2.5-MSPS throughput, the ADS7884SDBVT draws 2.25–3.0 mA, resulting in 6.8 mW typical power dissipation. This value is measured and specified in the "Power Supply Requirements" table of the SLAS567 datasheet and applies directly to the ADS7884SDBVT in normal operation mode.
Can the ADS7884SDBVT interface with a 5-V microcontroller while powered from 3 V?
Yes-the ADS7884SDBVT digital inputs (CS, SCLK) tolerate voltages up to 5.5 V regardless of VDD, so a 5-V MCU can drive them directly even when ADS7884SDBVT is powered from 3 V. However, SDO output levels remain referenced to VDD (3 V), requiring level translation if the MCU reads SDO.
What is the guaranteed integral nonlinearity (INL) specification for the ADS7884SDBVT?
The ADS7884SDBVT has a guaranteed INL of ±0.3 LSB over temperature (–40°C to 125°C) and supply (2.7–5.5 V), as specified in the "SYSTEM PERFORMANCE" table of the SLAS567 datasheet. This value is tested and ensured for every ADS7884SDBVT unit, supporting precision applications like medical instrumentation and closed-loop control.
ADS7884SDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 3M
- 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:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7884SDBVT FAQ
1.How can I place an order for ADS7884SDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7884SDBVT 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 ADS7884SDBVT reliable?
The price and inventory of ADS7884SDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7884SDBVT is usually 5 days.
3.What payment methods are accepted for ADS7884SDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7884SDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7884SDBVT?
ADS7884SDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7884SDBVT 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 ADS7884SDBVT?
For technical support, including ADS7884SDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7884SDBVT requirements.
6.How does Aetrix verify that ADS7884SDBVT is sourced from the original manufacturer or authorized distributors?
All ADS7884SDBVT 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 ADS7884SDBVT meets industry standards.
7.What is the process for return or replacement of ADS7884SDBVT?
All ADS7884SDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS7884SDBVT, 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 ADS7884SDBVT part is unused and in its original packaging.
Return procedure for ADS7884SDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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