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Texas Instruments ADS8343E/2K5
- Part No.:
- ADS8343E/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADS8343E/2K5.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,550
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Product details
Overview
ADS8343E/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, and SSOP-16 package. It supports single-ended or differential analog inputs, operates from 2.7V to 5V, and delivers 86dB SINAD at 10kHz - ideal for portable data loggers and battery-powered measurement systems.
For engineers reviewing the ADS8343E/2K5 datasheet, ADS8343E/2K5 pinout, ADS8343E/2K5 application, or ADS8343E/2K5 equivalent, key selection factors include its 16-bit resolution with no missing codes (14-bit guaranteed), shutdown mode (<15µW), 2.4MHz max external clock support, and compatibility with ADS7841/ADS8341 for design reuse in multi-channel sensing interfaces.
Technical Context
The ADS8343E/2K5 implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling true 16-bit conversion without external hold circuitry. Its 4-channel analog multiplexer supports configurable single-ended (CHx-to-COM) or differential (CHx–CHy) input modes controlled via an 8-bit serial command byte.
It uses an unbuffered external reference (0.5V to VCC/2), where LSB size scales linearly (e.g., 76µV at 2.5V VREF); gain and bipolar offset errors are specified at ±8 LSB and ±2 mV respectively over –40°C to +85°C. Power-down is triggered by SHDN pin or PD bits in the control byte, resuming valid conversion immediately on wake-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit SAR with no missing codes guaranteed to 14 bits - ensures monotonicity and avoids code gaps in precision measurement. |
| Throughput Rate | 100 kHz maximum - supports real-time sampling of audio-band and control-loop signals with 10 µs per conversion. |
| SINAD | 86 dB at 10 kHz (5 Vp-p input) - enables >14 ENOB for high-fidelity sensor digitization in noisy environments. |
| Input Configuration | 4-channel single-ended or 2-channel differential - allows flexible signal routing without external multiplexers or instrumentation amps. |
| Supply Range | 2.7 V to 5.0 V - compatible with Li-ion, 3.3 V, and 5 V system rails; quiescent current 1.2–2.0 mA depending on voltage. |
| Reference Range | 0.5 V to VCC/2 - sets full-scale span to ±VREF; enables adjustable input ranges (e.g., ±1.25 V at 2.7 V supply). |
| Package | SSOP-16 (DBQ) - 16-pin shrink small-outline package with 0.65 mm pitch; footprint-compatible with ADS7841/ADS8341. |
Pinout & Package
ADS8343E/2K5 is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch, rated for –40°C to +85°C operation. The package is moisture-sensitive level 2a per J-STD-020 and requires standard reflow handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VCC (Pins 1, 9) | Power supply input | Dual power pins reduce IR drop and improve PSRR; accepts 2.7 V to 5.0 V with <2.0 mA typical supply current. |
| CH0–CH3 (Pins 2–5) | Analog input channels | Four independent analog inputs; selected via A2–A0 bits; support single-ended (vs COM) or differential (CHx–CHy) acquisition. |
| COM (Pin 6) | Common-mode reference | Typically tied to VREF; defines common-mode voltage for single-ended inputs; must be low-impedance to minimize error. |
| SHDN (Pin 7) | Hardware shutdown control | Active-low input; reduces supply current to <15 µW when asserted; no wake-up delay - first conversion is valid. |
| VREF (Pin 8) | Unbuffered reference input | Directly drives internal CDAC; 0.5 V to VCC/2 range; input current up to 40 µA at 2.5 V; requires local 1–10 µF bypassing. |
| GND (Pins 10, 11) | Analog/digital ground | Two dedicated ground pins separate analog return paths; must be connected to low-impedance system ground plane. |
| DOUT (Pin 12) | Serial data output | Three-state CMOS output enabled only when CS is low; data valid on DCLK falling edge; MSB-first, two's complement format. |
| BUSY (Pin 13) | Conversion status indicator | Open-drain or CMOS output (configurable); goes high during conversion; used for hardware handshaking or interrupt generation. |
| DIN (Pin 14) | Serial data input | Latches 8-bit control byte on DCLK rising edge; includes channel select (A2–A0), SGL/DIF, and PD1/PD0 bits. |
| CS (Pin 15) | Chip select | Active-low enable; initiates conversion sequence; disables DOUT/BUSY when high to allow bus sharing. |
| DCLK (Pin 16) | External serial clock | Drives data I/O and SAR conversion in external clock mode; max 2.4 MHz; timing-critical for 24-cycle conversion protocol. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-for-pin compatibility with ADS7841 and ADS8341 | Enables drop-in replacement or migration path in existing designs without PCB revision or firmware changes. |
| Configurable single-ended or differential input mode | Reduces BOM count by eliminating need for external op-amps or muxes in mixed-signal front-ends. |
| Low-power shutdown mode (<15 µW) | Extends battery life in portable instruments; wake-up latency is zero - no calibration or settling delay required. |
| Internal sample-and-hold with 1.7 µs acquisition time | Eliminates external S/H circuitry; supports anti-alias filtering before the ADC without added propagation delay. |
| CMOS-compatible serial interface with 3-wire timing | Integrates seamlessly with microcontrollers lacking dedicated SPI peripherals; tolerant to 5.5 V inputs regardless of VCC. |
Applications
| Portable Data Acquisition | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Multi-channel thermocouple and RTD monitoring in handheld field calibrators with Li-ion battery power. IC Role / Device Role / Timing Role: Primary 16-bit ADC capturing four analog sensor outputs sequentially at 10–100 Hz with programmable gain and bipolar range. Use Value: Enables 0.1°C temperature resolution using internal ±VREF scaling and eliminates external PGA or level-shifting circuitry. |
Use Scenario: Analog input module for PLC backplanes requiring isolated 4–20 mA loop receiver and voltage sensing. IC Role / Device Role / Timing Role: High-accuracy front-end digitizer interfacing with opto-isolated serial lines and precision reference buffers. Use Value: Delivers 14-bit effective resolution (ENOB) at 10 kHz while maintaining >100 dB channel-to-channel isolation for noise rejection. |
| Battery-Powered Test Equipment | Medical Vital Sign Monitor |
|
Use Scenario: Portable oscilloscope-style waveform capture in handheld multimeters with 100 kS/s sampling capability. IC Role / Device Role / Timing Role: Core sampling engine driving real-time FFT and RMS calculations on ARM Cortex-M4 MCU. Use Value: Achieves 86 dB SINAD at 10 kHz with <10 µs conversion time - sufficient for 50/60 Hz harmonics analysis and THD measurement. |
Use Scenario: ECG and bio-potential signal digitization in wearable patient monitors with ultra-low standby power. IC Role / Device Role / Timing Role: Low-noise, low-power ADC acquiring differential electrode pairs with programmable gain and DC offset cancellation. Use Value: Supports 16-bit resolution with <1 µVrms input-referred noise and shutdown current <15 µW for extended wearable runtime. |
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 |
|---|---|---|---|
| ADS8341E/2K5 | Same 16-bit SAR core and SSOP-16 package but 2-channel (not 4-channel) input; identical timing, power, and interface. | Reduced channel count limits use in multi-sensor systems; suitable for dual-input applications like differential pressure + temperature. | Select when only two analog inputs are needed - saves cost and layout area without sacrificing resolution or speed. |
| ADS7841E/2K5 | 12-bit resolution, same pinout and serial interface; lower power (1.5 mW vs 8 mW), smaller integral linearity error (±2 LSB vs ±8 LSB). | Lower resolution restricts dynamic range to ~72 dB SINAD; better suited for cost-sensitive industrial controls than precision metrology. | Choose for non-critical measurements where 12-bit accuracy suffices and board space or BOM cost is constrained. |
Compared with ADS8341E/2K5 and ADS7841E/2K5, the ADS8343E/2K5 uniquely delivers 4-channel 16-bit performance in the same SSOP-16 footprint - enabling higher channel density and precision without increasing interface complexity or PCB area.
Availability
ADS8343E/2K5 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and battery-powered test equipment requiring stable component supply across long production lifecycles.
Supply support for ADS8343E/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 signal chains.
The ADS8343E/2K5 belongs to TI's precision SAR ADC product line, designed specifically for portable, multi-channel measurement systems demanding high resolution, low power, and compact packaging without sacrificing AC performance.
FAQ
What is the maximum sampling rate supported by the ADS8343E/2K5?
The ADS8343E/2K5 supports a maximum throughput rate of 100 kHz, achieved with a 2.4 MHz external clock and 24 clock cycles per conversion. This corresponds to a minimum conversion time of 10 µs. At lower clock frequencies or in internal clock mode, the rate scales proportionally - e.g., 50 kHz at 1.2 MHz DCLK. The ADS8343E/2K5 maintains full 16-bit specification compliance across this range.
Does the ADS8343E/2K5 require an external reference, and what voltage range is supported?
Yes, the ADS8343E/2K5 requires an external unbuffered reference applied to the VREF pin, supporting 0.5 V to VCC/2. For example, at +5 V supply, VREF may range from 0.5 V to 2.5 V; at +2.7 V, it spans 0.5 V to 1.35 V. The full-scale input range is ±VREF, and LSB size scales accordingly (e.g., 76 µV at 2.5 V). The ADS8343E/2K5 does not include an internal reference.
How does the ADS8343E/2K5 handle differential versus single-ended inputs?
The ADS8343E/2K5 configures input mode via the SGL/DIF bit in the 8-bit control byte: HIGH selects single-ended (CHx referenced to COM), LOW selects differential (e.g., CH0–CH1). In single-ended mode, COM is typically tied to VREF; in differential mode, both inputs swing ±VREF about a common-mode voltage. The ADS8343E/2K5 guarantees >100 dB channel-to-channel isolation in either configuration.
Can the ADS8343E/2K5 be powered down between conversions, and how fast does it wake up?
Yes, the ADS8343E/2K5 supports automatic power-down between conversions using PD1=PD0=0 in the control byte or by asserting the SHDN pin low. Supply current drops below 15 µW. Wake-up is instantaneous - the first conversion after wake-up is fully valid with no delay or recalibration required. The ADS8343E/2K5 resumes full performance immediately upon CS assertion.
Is the ADS8343E/2K5 pin-compatible with other devices in its family?
Yes, the ADS8343E/2K5 is explicitly pin-for-pin compatible with the ADS7841 and ADS8341, sharing identical SSOP-16 (DBQ) pinout, power sequencing, and serial interface timing. This allows direct substitution in existing layouts - for example, upgrading from 12-bit (ADS7841) to 16-bit (ADS8343E/2K5) resolution without PCB changes. The ADS8343E/2K5 retains all control and timing compatibility.
ADS8343E/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:
- Active
- 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:
- -
ADS8343E/2K5 FAQ
1.How can I place an order for ADS8343E/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8343E/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 ADS8343E/2K5 reliable?
The price and inventory of ADS8343E/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8343E/2K5 is usually 5 days.
3.What payment methods are accepted for ADS8343E/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8343E/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8343E/2K5?
ADS8343E/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8343E/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 ADS8343E/2K5?
For technical support, including ADS8343E/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8343E/2K5 requirements.
6.How does Aetrix verify that ADS8343E/2K5 is sourced from the original manufacturer or authorized distributors?
All ADS8343E/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 ADS8343E/2K5 meets industry standards.
7.What is the process for return or replacement of ADS8343E/2K5?
All ADS8343E/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8343E/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 ADS8343E/2K5 part is unused and in its original packaging.
Return procedure for ADS8343E/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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