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Texas Instruments ADS8344E/2K5G4
- Part No.:
- ADS8344E/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADS8344E/2K5G4.pdf
- Description:
- IC ADC 16BIT SAR 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,058
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Product details
Overview
ADS8344E/2K5G4 from Texas Instruments is a 16-bit, 8-channel SAR analog-to-digital converter with synchronous serial interface, ±0.05% gain error, 84 dB SINAD, and 100 kHz throughput rate. It operates from a single 2.7V–5V supply, supports single-ended or differential input configurations, and features on-chip multiplexer and shutdown mode for battery-powered data acquisition systems.
For engineers reviewing the ADS8344E/2K5G4 datasheet, ADS8344E/2K5G4 pinout, ADS8344E/2K5G4 application, or ADS8344E/2K5G4 equivalent, key selection considerations include its QSOP-20 package, 250 mW absolute max power dissipation, –40°C to +85°C industrial temperature range, and compatibility with external or internal clock modes for flexible system integration.
Technical Context
The ADS8344E/2K5G4 implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling precise 16-bit conversion without external hold circuitry. Its 8-channel analog multiplexer supports both single-ended (8 channels referenced to COM) and differential (4 channel pairs) configurations via SGL/DIF and A2–A0 control bits.
Digital interface uses a 4-wire CMOS-compatible serial protocol (CS, DCLK, DIN, DOUT) with BUSY signaling and 24-clock-cycle conversion timing in external clock mode. Power management includes auto power-down (PD1/PD0 = 00), internal clock mode (PD1=1, PD0=0), and SHDN pin control-enabling <15 µW shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision measurement |
| Throughput Rate | 100 kHz - enables real-time sampling of signals up to ~40 kHz (Nyquist-limited) |
| SINAD | 84 dB - corresponds to ~13.7 effective bits at 10 kHz input, critical for dynamic signal fidelity |
| Gain Error | ±0.05% - ensures accurate full-scale scaling across temperature (–40°C to +85°C) |
| Supply Range | 2.7 V to 5 V - supports direct interfacing with Li-ion, 3.3 V, and 5 V logic domains |
| Reference Range | 0.5 V to VCC - allows flexible input span setting (e.g., 0–2.5 V or 0–5 V) without external buffers |
| Power Dissipation | 10 mW at 100 kHz / +5 V - enables thermally constrained portable instrumentation designs |
Pinout & Package
ADS8344E/2K5G4 is packaged in QSOP-20 (DBQ), a 20-pin, 0.64 mm pitch, surface-mount package with 7.2 mm × 4.4 mm footprint and 1.0 mm max height-optimized for space-constrained PCB layouts in portable test equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog Input Channels | Eight single-ended inputs or four differential pairs; selected via A2–A0 and SGL/DIF control bits |
| COM | Analog Ground Reference | Sets zero-code voltage in single-ended mode; must be connected to system ground or stable reference point |
| SHDN | Shutdown Control | Active-low input; reduces supply current to <15 µW when asserted, preserving battery life |
| VREF | External Reference Input | Unbuffered input driving CDAC array; sets full-scale range (0 V to VREF); requires low-noise source |
| +VCC (Pins 12, 20) | Power Supply | Dual power pins reduce IR drop and improve PSRR; accepts 2.7–5 V with 250 mW absolute max dissipation |
| GND (Pins 13, 14) | Analog/Digital Ground | Separate ground pins minimize coupling between analog and digital return paths |
| DIN/DOUT | Serial Data I/O | CMOS-level, overvoltage-tolerant (to +5.5 V); DOUT high-impedance when CS = HIGH |
| CS | Chip Select | Active-low enable; controls DOUT tri-state and initiates control byte latching on rising DCLK edge |
| DCLK | Serial Clock | Drives data transfer and (in external mode) conversion timing; fDCLK = 24 × fSAMPLE |
| BUSY | Conversion Status | Active-low open-drain output indicating acquisition/conversion in progress; used for polling or interrupt |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 8-channel multiplexer | Reduces external component count and board area in multi-sensor systems; eliminates need for external analog switches |
| Internal sample-and-hold | Removes requirement for external S/H circuitry; simplifies layout and improves acquisition timing consistency |
| Configurable clock mode (internal/external) | Internal clock relieves MCU timing burden; external clock enables deterministic, high-throughput streaming |
| Low-power shutdown (<15 µW) | Extends battery life in portable DAQ and PDA applications; fast wake-up (<1 µs) preserves measurement responsiveness |
| Single 2.7–5 V supply operation | Eliminates dual-supply design complexity and associated regulators; compatible with common embedded power rails |
Applications
| Data Acquisition Systems | Test & Measurement Equipment |
|---|---|
Use Scenario: Multi-channel voltage monitoring in environmental sensor nodes logging temperature, pressure, and humidity. IC Role / Device Role / Timing Role: Primary ADC capturing synchronized samples from 8 analog sensors via internal multiplexer and serial interface. Use Value: 16-bit resolution and 84 dB SINAD ensure detection of sub-millivolt signal changes across wide dynamic ranges. | Use Scenario: Portable oscilloscope front-end digitizing analog waveforms up to 40 kHz bandwidth. IC Role / Device Role / Timing Role: High-fidelity sampling engine with internal S/H and configurable clock mode for jitter-sensitive capture. Use Value: 100 kHz throughput and low aperture jitter (100 ps) preserve time-domain integrity of transient signals. |
| Industrial Process Control | Battery-Powered Systems |
Use Scenario: PLC analog input module acquiring 4–20 mA loop signals from field transmitters. IC Role / Device Role / Timing Role: Precision ADC converting conditioned current-loop outputs with gain/offset calibration support. Use Value: ±0.05% gain error and –40°C to +85°C operation ensure long-term accuracy in uncontrolled factory environments. | Use Scenario: Handheld multimeter measuring DC voltage, resistance, and continuity with auto-ranging. IC Role / Device Role / Timing Role: Low-power, high-resolution ADC enabling >10-hour battery life while maintaining 5½-digit precision. Use Value: 10 mW active power and <15 µW shutdown current directly extend operating time on coin-cell or Li-ion batteries. |
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 |
|---|---|---|---|
| ADS8345E/2K5 | Same pinout, identical electrical specs, but includes internal reference (2.5 V); no external VREF required | Reduces BOM count in cost-sensitive, space-constrained designs where reference accuracy tolerance ≥0.1% is acceptable | Select ADS8345E/2K5 if eliminating external reference IC and trimming is prioritized over maximum flexibility in input span |
| ADS8325IPW | 16-bit, 1-MSPS SAR ADC in TSSOP-20; higher speed but higher power (25 mW), no on-chip multiplexer | Requires external analog switch for multi-channel use; suited for high-speed single-channel applications like motor control feedback | Choose ADS8325IPW only when >100 kHz sampling is mandatory and external multiplexing is acceptable |
Compared with ADS8344E/2K5G4, ADS8345E/2K5 offers integrated reference convenience at the cost of VREF flexibility, while ADS8325IPW trades multi-channel integration and power efficiency for raw speed-making ADS8344E/2K5G4 optimal for balanced, battery-aware, multi-sensor systems.
Availability
ADS8344E/2K5G4 is available at Aetrix Electronics and suitable for data acquisition systems, industrial process controllers, and battery-powered handheld instruments requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for ADS8344E/2K5G4 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 precision data converter innovation.
The ADS8344 product line targets portable and industrial measurement applications demanding high resolution, multi-channel flexibility, and ultra-low power-designed specifically for battery-operated DAQ, PDA, and remote sensor platforms.
FAQ
What is the maximum sampling rate supported by the ADS8344E/2K5G4?
The ADS8344E/2K5G4 supports a maximum throughput rate of 100 kHz, achieved with an external DCLK frequency of 2.4 MHz (fDCLK = 24 × fSAMPLE). This rate is maintained across the full industrial temperature range (–40°C to +85°C) and supply range (2.7 V to 5 V), as verified in the SBAS139E datasheet Electrical Characteristics tables.
Does the ADS8344E/2K5G4 require an external reference voltage?
Yes, the ADS8344E/2K5G4 requires an external reference voltage applied to the VREF pin. It accepts VREF from 0.5 V to +VCC, and the full-scale input range is 0 V to VREF. The device does not include an internal reference; reference stability and noise directly impact overall ADC accuracy and noise floor, as detailed in the Reference Input section of the SBAS139E datasheet.
Can the ADS8344E/2K5G4 operate from a 3.3 V supply?
Yes, the ADS8344E/2K5G4 is fully specified for operation from 2.7 V to 5 V, including 3.3 V nominal supplies. At +VCC = 3.3 V, it maintains 100 kHz throughput, 16-bit resolution, and all key AC/DC specifications (e.g., ±0.05% gain error, 84 dB SINAD) across –40°C to +85°C, per the +2.7 V Electrical Characteristics table in SBAS139E.
How many analog input channels does the ADS8344E/2K5G4 support, and what configurations are available?
The ADS8344E/2K5G4 supports eight analog input channels (CH0–CH7). It can be configured for either 8-channel single-ended operation (each channel referenced to the COM pin) or 4-channel differential operation (CH0–CH3 or CH4–CH7 pairs), selected dynamically via the SGL/DIF and A2–A0 control bits in the serial command byte as defined in Tables I and II of SBAS139E.
What package type is used for the ADS8344E/2K5G4, and is it RoHS compliant?
The ADS8344E/2K5G4 is supplied in a QSOP-20 package (package drawing DBQ), with dimensions 7.2 mm × 4.4 mm × 1.0 mm max. Per Texas Instruments' official packaging documentation and the SBAS139E datasheet, this variant is RoHS compliant and lead-free, meeting JEDEC J-STD-020 moisture sensitivity level 3 requirements.
ADS8344E/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 4, 8
- 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:
- 20-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8344E/2K5G4 FAQ
1.How can I place an order for ADS8344E/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8344E/2K5G4 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 ADS8344E/2K5G4 reliable?
The price and inventory of ADS8344E/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8344E/2K5G4 is usually 5 days.
3.What payment methods are accepted for ADS8344E/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8344E/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8344E/2K5G4?
ADS8344E/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8344E/2K5G4 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 ADS8344E/2K5G4?
For technical support, including ADS8344E/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8344E/2K5G4 requirements.
6.How does Aetrix verify that ADS8344E/2K5G4 is sourced from the original manufacturer or authorized distributors?
All ADS8344E/2K5G4 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 ADS8344E/2K5G4 meets industry standards.
7.What is the process for return or replacement of ADS8344E/2K5G4?
All ADS8344E/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8344E/2K5G4, 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 ADS8344E/2K5G4 part is unused and in its original packaging.
Return procedure for ADS8344E/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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