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Texas Instruments THS4531AIDGK
- Part No.:
- THS4531AIDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4531AIDGK.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,712
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Product details
Overview
THS4531AIDGK from Texas Instruments is an ultra-low-power, fully differential amplifier with rail-to-rail output and negative-rail input capability. It delivers 36 MHz bandwidth (G = 1 V/V), 200 V/µs slew rate, and –120 dBc THD at 1 kHz (1 VRMS), optimized for driving SAR and ΔΣ ADCs in single-supply 2.5–5.5 V systems.
For engineers reviewing the THS4531AIDGK datasheet, THS4531AIDGK pinout, THS4531AIDGK application, or THS4531AIDGK equivalent, key selection criteria include power-down current (0.5 µA), VOCM-controlled common-mode output, input voltage noise (10 nV/√Hz), and compatibility with high-channel-count, power-dense data acquisition systems.
Technical Context
The THS4531AIDGK implements a fully differential architecture with independent VOCM input enabling precise DC-coupled interface to ADCs. Its negative-rail input (down to VS– – 0.2 V) and rail-to-rail output (within 120 mV of rails) support ground-referenced single-ended sources without level-shifting.
It features dual-stage power-down control with 600 ns turn-on and 15 ns turn-off delays, and maintains 114 dB open-loop gain and ±100 µV input offset voltage across –40°C to +125°C - critical for precision low-power signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - enables operation from single Li-ion or dual AA cells without regulation. |
| Quiescent Current | 250 µA - supports battery-powered portable instrumentation with multi-day runtime. |
| Bandwidth (G = 1) | 36 MHz - sufficient for >10 MSPS ADC drivers with flat response up to 15 MHz (0.1-dB). |
| Slew Rate | 220/390 V/µs (rise/fall) - ensures faithful reproduction of fast transient signals into 2-kΩ loads. |
| THD @ 1 kHz | –129 dBc - preserves dynamic range in audio and precision measurement front-ends. |
| Input Noise | 10 nV/√Hz - minimizes added noise in low-level sensor signal chains. |
| Power-Down Current | 0.5 µA - reduces standby power by >500× versus active mode for duty-cycled systems. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, surface-mount, thermally enhanced for low-power analog applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN– | Inverting input | Accepts differential or single-ended signals; supports common-mode down to VS– – 0.2 V. |
| VIN+ | Non-inverting input | Enables standard differential gain configuration; matched impedance to VIN–. |
| VOUT– | Inverted output | Provides complementary output for true differential signaling to ADC inputs. |
| VOUT+ | Non-inverted output | Delivers rail-to-rail swing (VS– + 0.1 V to VS+ – 0.25 V) at full bandwidth. |
| VOCM | Output common-mode control | Sets differential output midpoint; 0.996 V/V gain ensures accurate DC coupling to ADC reference. |
| PD | Power-down enable | Active-high logic input; drives device into 0.5 µA sleep state with 15 ns shutdown latency. |
| VS+ | Positive supply | Accepts 2.5–5.5 V; PSRR of 108 dB suppresses supply noise from mixed-signal PCBs. |
| VS– | Negative supply / ground | Reference for all internal circuitry; tied to system ground in single-supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Eliminates even-order harmonics and rejects common-mode interference in noisy environments. |
| Rail-to-rail output + negative-rail input | Enables direct interface to ground-referenced sensors and single-supply ADCs without external biasing. |
| VOCM-controlled common-mode output | Permits precise matching to ADC input common-mode voltage, enabling DC-coupled, zero-drift signal paths. |
| Ultra-low 250 µA quiescent current | Reduces thermal load in densely packed multichannel DAQ modules and extends battery life in portable test gear. |
| 0.5 µA power-down mode | Allows dynamic power gating per channel in high-channel-count systems without sacrificing wake-up speed. |
Applications
| Low-Power SAR ADC Driver | Single-Ended to Differential Conversion |
|---|---|
Use Scenario: Driving 16-bit ADS8861 (1 MSPS) in handheld metering equipment powered by 3.3 V supply. IC Role / Device Role / Timing Role: Front-end driver providing gain, common-mode level shift, and distortion-free signal conditioning before sampling. Use Value: 36 MHz bandwidth and –129 dBc THD preserve ENOB > 15.5 bits; 250 µA current enables 10-channel design within 3 mA total analog front-end budget. | Use Scenario: Converting output of MEMS microphone (single-ended, ground-referenced) to differential signal for noise-immune routing to codec. IC Role / Device Role / Timing Role: Active balun with VOCM set to mid-supply, rejecting PCB EMI during board-level signal transport. Use Value: Negative-rail input accepts 0 V common-mode; rail-to-rail output maximizes dynamic range into 2.5 V ADC inputs. |
| High-Channel-Count Data Acquisition | Low-Power Wide-Bandwidth Signal Conditioning |
Use Scenario: 32-channel industrial sensor node aggregating thermocouple, RTD, and strain gauge signals using shared 5 V supply. IC Role / Device Role / Timing Role: Per-channel programmable-gain amplifier and ADC interface buffer with independent power-down control. Use Value: 0.5 µA shutdown current allows >99% of channels to sleep between scans; VSSOP-8 footprint minimizes board area per channel. | Use Scenario: Preconditioning ultrasound receive path in portable medical imaging where power and size are constrained. IC Role / Device Role / Timing Role: Low-noise, wideband gain stage amplifying weak echo signals before digitization at 40 MSPS. Use Value: 10 nV/√Hz input noise and 36 MHz bandwidth maintain SNR > 72 dB across 1–10 MHz band; 200 V/µs slew rate handles fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4531IDGK | Same silicon, but specified over –40°C to +125°C (vs. –40°C to +105°C for THS4531AIDGK); identical electrical specs. | Required for extended-temperature industrial or automotive under-hood use; not needed for commercial-grade portable instruments. | Select THS4531IDGK only when full automotive temperature qualification is mandated. |
| THS4521IDGK | Higher power (1.14 mA vs. 0.25 mA), higher bandwidth (145 MHz), lower noise (4.6 nV/√Hz), but no power-down mode. | Suitable for performance-critical, mains-powered systems where power efficiency is secondary to SNR and speed. | Choose THS4521IDGK when THD < –135 dBc and bandwidth > 100 MHz are required, and 0.5 µA sleep current is unnecessary. |
Compared with THS4531IDGK and THS4521IDGK, the THS4531AIDGK uniquely balances ultra-low power (250 µA), integrated power-down (0.5 µA), and precision (±100 µV VOS) in a compact VSSOP-8 package - making it optimal for battery-operated, high-channel-count, and thermally constrained designs.
Availability
THS4531AIDGK is available at Aetrix Electronics and suitable for low-power data acquisition, portable instrumentation, and high-channel-count sensor interfaces requiring stable component supply and long-term manufacturability.
Supply support for THS4531AIDGK 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The THS4531AIDGK belongs to TI's precision, low-power differential amplifier product line - engineered specifically for energy-efficient, high-fidelity signal conditioning in space- and power-constrained data acquisition systems.
FAQ
What is the operating temperature range for the THS4531AIDGK?
The THS4531AIDGK is rated for operation from –40°C to +105°C ambient temperature. This range supports commercial and industrial applications including portable test equipment and factory-floor sensor nodes, but excludes extended-temperature automotive under-hood use - for which the THS4531IDGK variant is specified.
Does the THS4531AIDGK require external compensation components?
No, the THS4531AIDGK is internally compensated and stable for gains ≥ 1 V/V with standard 2-kΩ feedback resistors and 2-kΩ differential loads. No external capacitors or resistors are needed for unity-gain stability, simplifying layout and reducing BOM count in compact designs.
How does the VOCM pin function in the THS4531AIDGK?
The VOCM pin on the THS4531AIDGK sets the common-mode voltage of the differential outputs with 0.996 V/V gain and ±1 mV offset. When driven with a clean reference (e.g., ADC's VCM pin), it enables precise DC-coupled interfacing without level-shifting circuitry - critical for maintaining accuracy in multistage signal chains.
Can the THS4531AIDGK drive a 600-Ω differential load?
Yes, the THS4531AIDGK can drive a 600-Ω differential load while maintaining –120 dBc THD at 1 kHz and 200 V/µs slew rate, as verified in the datasheet's G071 plot (VS = 5 V, VOUT = 1 VRMS). Output balance error remains ≤ –67 dB up to 1 MHz, ensuring robust performance in legacy audio and telecom line-driver applications.
What is the typical power-down recovery time for the THS4531AIDGK?
The THS4531AIDGK exhibits a typical turn-on time delay of 600 ns - defined as the time from PD pin rising to high until VOUT reaches 90% of its final value under RL = 200 Ω. This fast wake-up enables burst-mode operation in time-sliced multichannel systems without introducing timing jitter or settling errors.
THS4531AIDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 390V/µs
- Gain Bandwidth Product:
- 27 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 250µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS4531AIDGK FAQ
1.How can I place an order for THS4531AIDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4531AIDGK 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 THS4531AIDGK reliable?
The price and inventory of THS4531AIDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4531AIDGK is usually 5 days.
3.What payment methods are accepted for THS4531AIDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4531AIDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4531AIDGK?
THS4531AIDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4531AIDGK 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 THS4531AIDGK?
For technical support, including THS4531AIDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4531AIDGK requirements.
6.How does Aetrix verify that THS4531AIDGK is sourced from the original manufacturer or authorized distributors?
All THS4531AIDGK 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 THS4531AIDGK meets industry standards.
7.What is the process for return or replacement of THS4531AIDGK?
All THS4531AIDGK units undergo pre-shipment inspection (PSI). If there is an issue with THS4531AIDGK, 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 THS4531AIDGK part is unused and in its original packaging.
Return procedure for THS4531AIDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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