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Texas Instruments ADS8343E
- Part No.:
- ADS8343E
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADS8343E.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,914
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Product details
Overview
ADS8343E from Texas Instruments is a 16-bit, 4-channel SAR analog-to-digital converter with serial interface, bipolar input range (±VREF), 100kHz throughput, and SSOP-16 package. It operates from a single 2.7V–5V supply, supports single-ended or differential inputs, and includes shutdown mode reducing power to <15µW - ideal for portable data loggers and battery-powered test equipment.
For engineers reviewing the ADS8343E datasheet, ADS8343E pinout, ADS8343E application, or ADS8343E equivalent, key selection considerations include its 16-bit resolution with 86dB SINAD at 10kHz, ±8 LSB integral linearity error over –40°C to +85°C, and compatibility with ADS7841/ADS8341 for drop-in replacement in multi-channel acquisition systems.
Technical Context
The ADS8343E implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling true 16-bit performance without external hold circuitry. Its 4-channel analog multiplexer supports configurable single-ended (CHx-to-COM) or differential (CHx vs CHy) input modes controlled via an 8-bit serial command byte.
Conversion timing is synchronized to an external DCLK (up to 2.4MHz) or optionally driven by an internal clock (PD1=1, PD0=0). The device uses binary two's complement output format, features CMOS-compatible digital I/O, and maintains specified performance across full industrial temperature range with VREF adjustable from 500mV to VCC/2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-fidelity signal digitization. |
| Throughput Rate | 100kHz - enables real-time sampling of fast transients in industrial monitoring systems. |
| SINAD | 86dB at 10kHz (VCC=5V) - ensures >14.3 effective bits for precision measurement applications. |
| Integral Linearity Error | ±8 LSB max (ADS8343E, +5V) - guarantees monotonicity and low harmonic distortion in closed-loop control. |
| Supply Range | 2.7V to 5V - supports direct integration into both 3.3V and 5V embedded systems without level-shifting. |
| Power Dissipation | 7.5–10mW at 100kHz (+5V) - enables extended battery life in handheld instrumentation. |
| Operating Temperature | –40°C to +85°C - qualified for deployment in uncontrolled industrial environments. |
Pinout & Package
ADS8343E is housed in a 16-pin SSOP (DBQ) package with 0.65mm pitch and exposed thermal pad. Pin assignments are validated per TI SBAS183C datasheet Rev. April 2003.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VCC (Pins 1, 9) | Primary power supply | Dual-supply pins enable robust decoupling; must be bypassed with 1µF + 0.1µF near each pin. |
| CH0–CH3 (Pins 2–5) | Analog input channels | Four single-ended inputs or two differential pairs; impedance matching required to avoid gain/offset drift. |
| COM (Pin 6) | Common-mode reference | Serves as return for single-ended inputs or negative leg in differential mode; typically tied to VREF. |
| SHDN (Pin 7) | Hardware shutdown control | Active-low signal reduces quiescent current to <15µW; no wake-up delay required. |
| VREF (Pin 8) | External reference voltage input | Unbuffered node setting full-scale range (±VREF); current draw varies with conversion rate and VREF value. |
| GND (Pins 10, 11) | Analog/digital ground | Separate ground pins minimize noise coupling; recommended to tie together at single point under device. |
| DOUT (Pin 12) | Serial data output | High-impedance when CS is HIGH; outputs MSB-first two's complement code on DCLK falling edge. |
| BUSY (Pin 13) | Conversion status indicator | Active-HIGH during conversion; used to synchronize host processor read timing without polling. |
| DIN (Pin 14) | Serial command input | Latches 8-bit control byte (S-A2-A1-A0-SGL/DIF-PD1-PD0) on DCLK rising edge when CS is LOW. |
| CS (Pin 15) | Chip select | Enables serial interface and initiates conversion sequence; must remain LOW for full 24-clock cycle. |
| DCLK (Pin 16) | Serial clock input | Drives data transfer and (in external mode) SAR conversion; max 2.4MHz for 100kHz throughput. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-for-pin compatibility with ADS7841/ADS8341 | Enables seamless migration or dual-sourcing in existing PCB layouts without redesign. |
| Bipolar input range (±VREF) | Supports AC-coupled sensor signals and bidirectional process variables without external op-amp level-shifting. |
| Configurable power-down modes | Three selectable states (always-on, auto power-down, internal clock) optimize power vs latency trade-offs. |
| Channel-to-channel isolation >100dB | Prevents crosstalk between simultaneously sampled channels in multi-sensor data acquisition. |
| Onboard 4-channel multiplexer | Reduces system component count and board space versus discrete ADC + MUX solutions. |
Applications
| Portable Data Logger | Industrial Process Monitor |
|---|---|
|
Use Scenario: Battery-powered field instrument recording temperature, pressure, and humidity from four sensors at 100Hz. IC Role / Device Role / Timing Role: Primary ADC acquiring synchronized samples across all channels with minimal power overhead. Use Value: 8mW typical power at +5V extends battery life beyond 12 months; shutdown mode cuts leakage to <15µW during idle intervals. |
Use Scenario: DIN-rail mounted controller measuring analog 4–20mA loop outputs from flow, level, and pH transmitters. IC Role / Device Role / Timing Role: High-accuracy front-end digitizer interfacing directly to isolated current-to-voltage stages. Use Value: ±8 LSB INL ensures <0.03% reading error across full scale; 100dB channel isolation prevents cross-channel interference in dense I/O modules. |
| Handheld Test Equipment | Medical Sensor Interface |
|
Use Scenario: Pocket-sized multimeter capturing transient waveforms with 16-bit resolution and user-selectable input ranges. IC Role / Device Role / Timing Role: Core sampling engine supporting both single-ended (voltage) and differential (current shunt) measurement modes. Use Value: Software-configurable SGL/DIF bit allows one hardware design to serve multiple measurement functions; SSOP-16 footprint fits compact enclosures. |
Use Scenario: Patient-worn vital sign monitor digitizing ECG, respiration, and skin conductance signals with low noise and galvanic isolation. IC Role / Device Role / Timing Role: Isolated analog input stage converting biopotential signals referenced to patient-specific common-mode voltage. Use Value: COM pin flexibility enables adaptive common-mode biasing; 86dB SINAD preserves diagnostic fidelity in low-amplitude physiological signals. |
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 | Same 16-bit SAR core and pinout, but 2-channel (not 4-channel) input mux; identical timing, power, and accuracy specs. | Applicable where only two analog inputs are required; reduces channel count but retains same software interface and layout compatibility. | Select ADS8341E when system requires fewer than four analog inputs and board space or BOM cost optimization is critical. |
| ADS7841E | 12-bit resolution (vs 16-bit), 5V-only supply (2.7–5.25V for ADS8343E), same SSOP-16 package and pinout; lower power (3.5mW). | Suitable for cost-sensitive applications where 12-bit resolution suffices (e.g., basic voltage monitoring); lacks bipolar input support. | Choose ADS7841E for non-critical measurements where resolution >12-bit is unnecessary and 5V-only operation is acceptable. |
Compared with ADS8341E and ADS7841E, the ADS8343E provides higher resolution and channel count at the cost of increased power and complexity - making it optimal for precision multi-sensor systems requiring full 16-bit fidelity and flexible input configuration.
Availability
ADS8343E is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and medical sensor interfaces requiring stable component supply across long production lifecycles.
Supply support for ADS8343E 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 industrial-grade ICs.
The ADS8343E belongs to TI's precision SAR ADC product line, engineered for high-resolution, low-power, multi-channel data acquisition in portable and harsh-environment applications.
FAQ
What is the maximum sampling rate supported by the ADS8343E?
The ADS8343E achieves a maximum throughput rate of 100kHz, corresponding to a minimum conversion time of 10µs. This requires an external DCLK frequency of 2.4MHz (24 cycles per conversion) and is fully specified across the –40°C to +85°C temperature range with VCC = 5V and VREF = 2.5V. At lower supply voltages (e.g., 2.7V), the 100kHz rate remains valid per SBAS183C Electrical Characteristics tables.
Does the ADS8343E support differential input configurations?
Yes, the ADS8343E supports differential inputs via its 4-channel multiplexer. When the SGL/DIF bit in the control byte is set LOW, the device configures selected channels (e.g., CH0 and CH1) as a differential pair. The input span becomes the difference between CHX and COM, delivering true differential rejection with >100dB channel-to-channel isolation at 50kHz as measured in the datasheet.
How does the ADS8343E handle power management in battery-operated systems?
The ADS8343E offers three hardware-configurable power-down modes via PD1/PD0 bits. In auto power-down (PD1=PD0=0), it draws <3µA between conversions. With SHDN pin asserted LOW, quiescent current drops below 15µW. These features enable ultra-low average power in intermittent-sampling applications - for example, a 1Hz wakeup cycle yields sub-µA average current while preserving full 16-bit performance on demand.
What reference voltage range is compatible with the ADS8343E?
The ADS8343E accepts an external reference voltage (VREF) from 500mV to VCC/2. At VCC = 5V, this allows VREF from 0.5V to 2.5V; at VCC = 2.7V, the range is 0.5V to 1.35V. The full-scale input span is always ±VREF, so a 1.25V reference yields ±1.25V bipolar range. Reference current scales with VREF and sampling rate - e.g., ~13µA typical at 2.5V/100kHz.
Is the ADS8343E pin-compatible with other Texas Instruments ADCs?
Yes, the ADS8343E is explicitly documented as pin-for-pin compatible with the ADS7841 and ADS8341. All three share identical SSOP-16 (DBQ) packaging, identical pin functions (including +VCC, GND, CH0–CH3, COM, SHDN, VREF, DCLK, CS, DIN, DOUT, BUSY), and overlapping timing and electrical specifications - enabling direct substitution in existing designs where channel count or resolution requirements change.
ADS8343E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for ADS8343E through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8343E 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 reliable?
The price and inventory of ADS8343E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8343E is usually 5 days.
3.What payment methods are accepted for ADS8343E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8343E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8343E?
ADS8343E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8343E 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?
For technical support, including ADS8343E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8343E requirements.
6.How does Aetrix verify that ADS8343E is sourced from the original manufacturer or authorized distributors?
All ADS8343E 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 meets industry standards.
7.What is the process for return or replacement of ADS8343E?
All ADS8343E units undergo pre-shipment inspection (PSI). If there is an issue with ADS8343E, 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 part is unused and in its original packaging.
Return procedure for ADS8343E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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