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Texas Instruments ADS8343EB/2K5
- Part No.:
- ADS8343EB/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADS8343EB/2K5.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,820
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Product details
Overview
ADS8343EB/2K5 from Texas Instruments is a 16-bit, 4-channel SAR analog-to-digital converter with synchronous serial interface, ±VREF bipolar input range, 100kHz throughput at 2.4MHz DCLK, and SSOP-16 package. It supports single-ended or differential analog inputs and operates from 2.7V to 5V supply-ideal for portable data loggers and battery-powered test equipment.
For engineers reviewing the ADS8343EB/2K5 datasheet, ADS8343EB/2K5 pinout, ADS8343EB/2K5 application, or ADS8343EB/2K5 equivalent, key selection criteria include its 86dB SINAD at 10kHz, 16-bit no-missing-codes performance, shutdown mode (<15µW), and compatibility with ADS7841/ADS8341 in SSOP-16 footprint.
Technical Context
The ADS8343EB/2K5 implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling precise 16-bit conversion without external hold circuitry. Its 4-channel multiplexer supports configurable single-ended (CHx-to-COM) or differential (CHx–CHy) input modes via SGL/DIF control bit.
It uses an external reference (0.5V to VCC/2) directly driving the CDAC array, with reference current scaling linearly with sampling rate and VREF magnitude. Digital interface operates in either external-clock mode (24–25 DCLK cycles/conversion) or internal-clock mode (PD1=1, PD0=0), with BUSY and DOUT synchronized to DCLK falling edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic output and ≥14-bit no-missing-codes performance across –40°C to +85°C. |
| Throughput Rate | 100kHz - achieved with 2.4MHz DCLK; enables real-time sampling of audio-band and sensor signals. |
| SINAD | 86dB at 10kHz (VCC=5V) - supports >14.5 ENOB for high-fidelity measurement applications. |
| Integral Linearity Error | ±6 LSB max (ADS8343EB grade) - ensures <0.01% FSR gain/offset error in precision instrumentation. |
| Supply Range | 2.7V to 5V - allows direct integration into both 3.3V and 5V systems without level-shifting. |
| Power Dissipation | 3.2mW typical at 2.7V/100kHz - enables multi-hour operation in coin-cell–powered devices. |
| Reference Range | 0.5V to VCC/2 - permits flexible full-scale input spans (e.g., ±1.25V at 2.7V or ±2.5V at 5V). |
Pinout & Package
ADS8343EB/2K5 is housed in a 16-pin SSOP (DBQ) package with 0.65mm pitch, rated for –40°C to +85°C operation. Pinout optimized for low-noise analog routing and compact PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VCC (Pins 1, 9) | Power supply input | Dual power pins reduce IR drop and improve PSRR; accepts 2.7V–5V with <3µA shutdown current. |
| CH0–CH3 (Pins 2–5) | Analog input channels | Four single-ended inputs or two differential pairs; matched impedance critical for <1LSB gain error. |
| COM (Pin 6) | Common-mode reference | Typically tied to VREF; sets common voltage for single-ended mode or negative input in differential mode. |
| SHDN (Pin 7) | Hardware shutdown control | Active-low input; reduces quiescent current to <15µW when asserted-essential for ultra-low-power sleep states. |
| VREF (Pin 8) | External reference input | Unbuffered, high-impedance node; supplies CDAC array; current scales with fSAMPLE and VREF magnitude. |
| GND (Pins 10, 11) | Analog/digital ground | Dual ground pins separate AGND/DGND paths to minimize digital switching noise coupling into analog section. |
| DOUT (Pin 12) | Serial data output | High-impedance when CS=HIGH; outputs MSB-first binary two's complement data on DCLK falling edge. |
| BUSY (Pin 13) | Conversion status indicator | Active-high open-drain output; asserts for one DCLK cycle after control byte, then remains HIGH during conversion. |
| DIN (Pin 14) | Serial data input | Latches control byte (S-A2-A1-A0-SGL/DIF-PD1-PD0) on rising DCLK edge when CS=LOW. |
| CS (Pin 15) | Chip select | Enables serial interface and initiates conversion sequence; must be held LOW for full 24-cycle transaction. |
| DCLK (Pin 16) | Serial clock input | Drives data I/O and (in external mode) SAR conversion timing; max 2.4MHz for 100kHz throughput. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit SAR with CDAC architecture | Eliminates need for external sample-and-hold; achieves 100kHz sustained throughput with 16-cycle conversion time. |
| Configurable input topology | Single-ended (CHx-to-COM) or differential (CHx–CHy) selection via SGL/DIF bit-enables flexible sensor interfacing. |
| Low-power shutdown mode | Reduces supply current to <3µA (typical) with SHDN=LOW-extends battery life in intermittent-sampling applications. |
| Pin-for-pin compatibility | Direct replacement for ADS7841 (12-bit) and ADS8341 (16-bit) in SSOP-16 footprint-simplifies design upgrades. |
| Wide reference voltage range | Supports 0.5V–2.5V VREF at 5V supply or 0.5V–1.35V at 2.7V-enables trade-off between resolution, noise, and dynamic range. |
Applications
| Portable Data Acquisition | Industrial Sensor Monitoring |
|---|---|
|
Use Scenario: Multi-channel temperature, pressure, and strain gauge readings in handheld field meters. IC Role / Device Role / Timing Role: 4-channel simultaneous sampling ADC with programmable gain and bipolar input support. Use Value: 16-bit resolution and 86dB SINAD enable sub-0.1% measurement accuracy without external amplification. |
Use Scenario: Remote monitoring of motor current, vibration, and ambient conditions in factory automation nodes. IC Role / Device Role / Timing Role: Low-power, isolated serial ADC interfacing to microcontroller over optocoupled SPI link. Use Value: 3.2mW @ 2.7V and shutdown mode allow >1-year battery life in wireless sensor transmitters. |
| Medical Instrumentation | Test & Measurement Equipment |
|
Use Scenario: ECG front-end signal digitization requiring high CMRR and low input bias current. IC Role / Device Role / Timing Role: Differential-input ADC with COM-referenced architecture rejecting common-mode interference. Use Value: 100dB channel-to-channel isolation and >80dB CMRR up to 100kHz suppress electrode motion artifacts. |
Use Scenario: Benchtop multimeter or oscilloscope auxiliary channel for DC/low-frequency waveform capture. IC Role / Device Role / Timing Role: Precision 16-bit converter with calibrated reference path and low THD. Use Value: ±6 LSB INL and –95dB THD ensure traceable metrology-grade measurements per ANSI C12.20. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8341EB/2K5 | Same 16-bit SAR core and SSOP-16 package, but only 2-channel input (CH0/CH1); identical timing, power, and interface. | Reduced channel count limits use to dual-sensor or differential-only systems; not suitable for 4-channel logging. | Select when system requires only two analog inputs and board space is constrained-no firmware changes needed. |
| ADS7841E/2K5 | 12-bit resolution, same pinout and serial interface; lower power (2.5mW), but only 70dB SINAD and ±2 LSB INL. | Lower resolution and SNR restrict use to cost-sensitive industrial controls where 0.025% accuracy suffices. | Choose for legacy designs needing drop-in upgrade path with relaxed accuracy requirements and lower BOM cost. |
Compared with ADS8343EB/2K5, ADS8341EB/2K5 offers identical performance in half the channel count, while ADS7841E/2K5 trades 4-bit resolution and 16dB SINAD for lower cost and power-making each viable only where their specific channel count, accuracy, or budget constraints align.
Availability
ADS8343EB/2K5 is available at Aetrix Electronics and suitable for portable data acquisition, industrial sensor monitoring, and medical instrumentation requiring stable component supply and long-term manufacturability.
Supply support for ADS8343EB/2K5 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 ADS8343EB/2K5 belongs to TI's precision SAR ADC product line, engineered for high-resolution, low-power, multi-channel data acquisition in portable and remote sensing applications.
FAQ
What is the maximum sampling rate supported by the ADS8343EB/2K5?
The ADS8343EB/2K5 supports a maximum throughput rate of 100kHz, achievable with a 2.4MHz external DCLK and proper acquisition timing. This rate is guaranteed across the full –40°C to +85°C temperature range and 2.7V–5V supply, with conversion time fixed at 16 clock cycles plus overhead for control/data transfer.
Does the ADS8343EB/2K5 require an external reference voltage?
Yes, the ADS8343EB/2K5 requires an external reference voltage applied to the VREF pin. It accepts 0.5V to VCC/2 (e.g., 0.5V–2.5V at 5V supply), and this reference directly defines the full-scale input span (±VREF). The device does not include an internal reference, and VREF must be low-noise and well-bypassed for optimal 16-bit performance.
How does the ADS8343EB/2K5 handle power-down mode?
The ADS8343EB/2K5 supports hardware shutdown via the SHDN pin (active-low) and programmable power-down modes via PD1/PD0 bits. In SHDN mode, supply current drops below 15µW. In auto power-down mode (PD1=PD0=0), it powers down between conversions, resuming instantly with no delay-the first conversion remains fully valid.
Is the ADS8343EB/2K5 pin-compatible with other Texas Instruments ADCs?
Yes, the ADS8343EB/2K5 is explicitly specified as pin-for-pin compatible with the ADS7841 (12-bit, 4-channel) and ADS8341 (16-bit, 2-channel) in the SSOP-16 (DBQ) package. This allows direct PCB reuse and firmware adaptation when upgrading resolution or adjusting channel count without layout changes.
What input configurations does the ADS8343EB/2K5 support?
The ADS8343EB/2K5 supports both 4-channel single-ended (each CHx referenced to COM) and 2-channel differential (CH0–CH1 or CH2–CH3) input modes, selected dynamically via the SGL/DIF bit in the 8-bit control byte. Input ranges scale with VREF, enabling ±VREF bipolar operation in either configuration.
ADS8343EB/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, 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:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V, 5V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8343EB/2K5 FAQ
1.How can I place an order for ADS8343EB/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8343EB/2K5 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 ADS8343EB/2K5 reliable?
The price and inventory of ADS8343EB/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8343EB/2K5 is usually 5 days.
3.What payment methods are accepted for ADS8343EB/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8343EB/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8343EB/2K5?
ADS8343EB/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8343EB/2K5 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 ADS8343EB/2K5?
For technical support, including ADS8343EB/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8343EB/2K5 requirements.
6.How does Aetrix verify that ADS8343EB/2K5 is sourced from the original manufacturer or authorized distributors?
All ADS8343EB/2K5 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 ADS8343EB/2K5 meets industry standards.
7.What is the process for return or replacement of ADS8343EB/2K5?
All ADS8343EB/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8343EB/2K5, 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 ADS8343EB/2K5 part is unused and in its original packaging.
Return procedure for ADS8343EB/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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