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Texas Instruments TLV0834CPWR
- Part No.:
- TLV0834CPWR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLV0834CPWR.pdf
- Description:
- IC ADC 8BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,282
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Product details
Overview
TLV0834CPWR from Texas Instruments is a 4-channel, 8-bit successive-approximation analog-to-digital converter (ADC) with serial interface, operating from 2.7 V to 3.6 V supply, delivering ±1 LSB total unadjusted error and 32 µs conversion time at 250 kHz clock. It supports single-ended, differential, and pseudodifferential input configurations and is used in sensor signal acquisition systems requiring low-voltage, space-constrained digitization.
For engineers reviewing the TLV0834CPWR datasheet, TLV0834CPWR pinout, TLV0834CPWR application, or TLV0834CPWR equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters across temperature (0°C to 70°C), and real-world design implications for microprocessor-interfaced data acquisition.
Technical Context
The TLV0834CPWR implements a sample-data-comparator architecture with internal SAR logic and a 5-bit multiplexer-address shift register. Channel selection and input mode (SGL/DIF/ODD/EVEN) are controlled via serial DI stream synchronized to CLK, with CS enabling full logic operation and SARS signaling conversion progress.
It features ratiometric operation using VCC as reference or external REF voltage, supports TTL/MOS-compatible I/O, and allows remote placement near analog sensors via noise-immune serial link. Input range is 0 V to VCC with VCC reference, and analog inputs tolerate –0.3 V to VCC + 0.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete digital codes for precise quantization of analog sensor outputs. |
| Supply Voltage Range | 2.7 V to 3.6 V - compatible with modern 3.3-V system rails and battery-powered designs. |
| Conversion Time | 32 µs at fCLK = 250 kHz - enables up to ~31.25 kSPS sampling for real-time monitoring applications. |
| Total Unadjusted Error | ±1 LSB - ensures monotonicity and eliminates missing codes without calibration. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems and industrial control panels. |
| Input Channels | 4-channel software-configurable MUX - supports flexible analog front-end routing without external switches. |
| Reference Mode | VCC or external REF - allows ratiometric measurement (e.g., resistive bridge) or fixed-scale encoding. |
Pinout & Package
TSSOP-16 package (PW), 5.0 mm × 4.4 mm body, 0.65 mm pitch, exposed pad not present, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | CH0–CH3 | Analog input channels - configurable as single-ended, differential pairs (CH0/CH1, CH2/CH3), or pseudodifferential with COM on TLV0838 (not applicable here). |
| 5 | DGTL GND | Digital ground reference - must be tied to system digital ground plane to minimize digital switching noise coupling into analog section. |
| 6 | VCC | Positive supply - powers both digital logic and internal analog circuitry; requires local 0.1-µF bypass capacitor. |
| 7 | DI | Serial data input - accepts 5-bit address word (start bit + 4-bit config) to select channel and input mode during CS low. |
| 8 | CLK | Serial clock input - controls timing of address latching and output data shifting; duty cycle 40%–60% required. |
| 9 | SARS | Status output - high during conversion, used by host processor to avoid premature DO read or new CS assertion. |
| 10 | DO | Serial data output - MSB-first (default), then LSB-first if SE is asserted (SE not present on TLV0834; pin 11 is NC). |
| 11 | REF | Reference voltage input - sets full-scale range; may be tied to VCC (ratiometric) or external precision source. |
| 12 | ANLG GND | Analog ground reference - must be star-connected to DGTL GND at single point to prevent ground loop errors. |
| 13 | CS | Chip select - active-low enable; must remain low throughout entire conversion cycle (≥32 µs at 250 kHz). |
| 14, 15, 16 | NC | No internal connection - left unconnected; no pull-up/down or routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable MUX | Single-ended, differential, or polarity-selectable inputs per channel pair - eliminates need for external analog switches or op-amp level-shifting networks. |
| Serial interface with minimal pins | DI, DO, CLK, CS, and SARS enable full control and readout over 5 wires - reduces PCB routing complexity and I/O count on microcontrollers. |
| Ratiometric operation | VCC used as reference - maintains accuracy despite supply variation, ideal for battery-operated sensor nodes where VCC drifts with charge state. |
| Low-power consumption | 0.2–0.75 mA typical ICC - extends operational life in always-on monitoring systems powered from coin cells or energy harvesters. |
| TTL/MOS logic compatibility | VIH ≥ 2 V, VOL ≤ 0.4 V at 1.6 mA - ensures interoperability with legacy 5-V MCUs and modern 3.3-V processors without level translators. |
Applications
| Industrial Sensor Interface | Portable Data Logger |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, and humidity from multiple analog transducers in factory automation cabinets. IC Role / Device Role / Timing Role: 4-channel ADC digitizing conditioned sensor outputs with shared VCC reference and serial output to ARM Cortex-M0+ MCU. Use Value: Eliminates external MUX and reference ICs; ±1 LSB error ensures repeatability across 0–70°C ambient without recalibration. |
Use Scenario: Battery-powered environmental logger capturing soil moisture, light intensity, and ambient air quality over 72-hour deployments. IC Role / Device Role / Timing Role: Low-voltage ADC acquiring 10-bit-equivalent resolution via oversampling, powered directly from 3.3-V LDO. Use Value: 2.7–3.6-V operation matches Li-ion battery discharge curve; 0.2 mA standby current extends runtime beyond 12 months per charge. |
| Motor Control Feedback | Medical Vital Sign Monitor |
|
Use Scenario: Sampling current-sense shunt voltages and hall-effect rotor position signals in BLDC motor drives. IC Role / Device Role / Timing Role: Simultaneous sampling of two differential channels (CH0/CH1, CH2/CH3) for torque and commutation timing. Use Value: Differential input mode rejects common-mode noise from PWM switching; 32 µs conversion enables 15 kHz current loop update rate. |
Use Scenario: Digitizing ECG electrode potentials and pulse oximeter photodiode outputs in handheld patient monitors. IC Role / Device Role / Timing Role: Single-ended acquisition of biopotential signals referenced to right-leg drive (RLD), with REF tied to precision bias voltage. Use Value: Input range 0 V to VCC avoids clipping of mV-level signals; ANLG/DGTL GND separation minimizes digital noise coupling into analog path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC0834CN | Identical 4-channel 8-bit SAR architecture but uses internal Zener regulator; requires ≥4.5 V supply; not 3-V compatible. | Legacy 5-V systems only; incompatible with 3.3-V or battery-powered designs due to higher VCC requirement. | Select TLV0834CPWR for 3-V operation; choose ADC0834CN only when retrofitting existing 5-V boards with no supply redesign. |
| TLV0834CDR | Same electrical specs and functionality, but in SOIC-14 package (14-pin, 8.65 mm × 3.9 mm); lead pitch 1.27 mm; no NC pins. | Better thermal performance and hand-solderability; larger footprint unsuitable for ultra-compact PCBs. | Choose TLV0834CPWR for high-density layouts; use TLV0834CDR when board assembly favors through-hole or larger reflow margins. |
Compared with ADC0834CN and TLV0834CDR, the TLV0834CPWR uniquely combines 3-V operation, TSSOP-16 compactness, and zero-cost external reference flexibility-making it optimal for next-generation portable and IoT edge nodes where voltage headroom and board area are constrained.
Availability
TLV0834CPWR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable data loggers, and motor control feedback systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLV0834CPWR 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 chain solutions.
The TLV0834CPWR belongs to TI's TLV083x family of low-voltage serial ADCs, designed specifically for cost-sensitive, space-constrained applications where 3-V operation, software-configurable inputs, and minimal external components are critical.
FAQ
What is the maximum clock frequency supported by TLV0834CPWR at 3.3 V supply?
The TLV0834CPWR supports up to 600 kHz clock frequency when VCC = 3.3 V, as specified in the recommended operating conditions table. At this rate, conversion time remains at 8 clock periods (13.3 µs), though total unadjusted error and linearity may degrade slightly outside the 250 kHz characterization condition. Always verify timing margins in your specific layout.
Does TLV0834CPWR support differential input mode, and how is it configured?
Yes, TLV0834CPWR supports differential input mode for adjacent channel pairs (CH0/CH1 and CH2/CH3). Configuration is performed via the 4-bit address word shifted into the DI pin during CS low: bits define SGL/DIF, ODD/EVEN, and polarity. The functional description confirms differential operation is fully implemented and validated for this exact part number.
Can TLV0834CPWR operate with VCC as the reference voltage, and what is the impact on accuracy?
Yes, TLV0834CPWR operates ratiometrically with VCC as reference. This preserves measurement accuracy against supply variation - e.g., ±5% VCC change causes no full-scale error shift. Total unadjusted error remains ±1 LSB across 2.7–3.6 V, as confirmed in the electrical characteristics table under "Supply-voltage variation error".
What is the function of the SARS pin on TLV0834CPWR, and how should it be used in firmware?
The SARS (Start Conversion Status) pin goes high when conversion begins and returns low upon completion. Firmware must monitor SARS (or insert fixed delay ≥32 µs at 250 kHz) before reading DO to avoid invalid data. This hardware handshake prevents race conditions more reliably than software-timed delays alone.
Is TLV0834CPWR pin-compatible with TLV0834CD or TLV0834IN packages?
No - TLV0834CPWR uses TSSOP-16 (16-pin), while TLV0834CD uses SOIC-14 and TLV0834IN uses PDIP-14. Pin count, pinout, and physical dimensions differ significantly. Direct replacement requires PCB redesign. Only TLV0834CDR and TLV0834IDR share identical SOIC-14 pin mapping; no TSSOP-16 equivalents exist in the same family.
TLV0834CPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 41k
- Number of Inputs:
- 2, 3, 4
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV0834CPWR FAQ
1.How can I place an order for TLV0834CPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV0834CPWR 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 TLV0834CPWR reliable?
The price and inventory of TLV0834CPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV0834CPWR is usually 5 days.
3.What payment methods are accepted for TLV0834CPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV0834CPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV0834CPWR?
TLV0834CPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV0834CPWR 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 TLV0834CPWR?
For technical support, including TLV0834CPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV0834CPWR requirements.
6.How does Aetrix verify that TLV0834CPWR is sourced from the original manufacturer or authorized distributors?
All TLV0834CPWR 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 TLV0834CPWR meets industry standards.
7.What is the process for return or replacement of TLV0834CPWR?
All TLV0834CPWR units undergo pre-shipment inspection (PSI). If there is an issue with TLV0834CPWR, 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 TLV0834CPWR part is unused and in its original packaging.
Return procedure for TLV0834CPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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