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Texas Instruments TLV0834CDR
- Part No.:
- TLV0834CDR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV0834CDR.pdf
- Description:
- IC ADC 8BIT SAR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,734
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Product details
Overview
TLV0834CDR from Texas Instruments is a 4-channel, 8-bit successive-approximation analog-to-digital converter (ADC) with serial control 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 designed for embedded sensor signal acquisition in space-constrained industrial and portable systems.
For engineers reviewing the TLV0834CDR datasheet, TLV0834CDR pinout, TLV0834CDR application, or TLV0834CDR equivalent, this page provides verified technical context, package-specific pin functions, real-world use scenarios, and validated alternative options for 3-V ADC selection in microprocessor-interfaced data acquisition systems.
Technical Context
The TLV0834CDR implements a sample-data-comparator SAR architecture with an integrated 4-channel analog multiplexer controlled via a 5-bit serial address word. Its serial DI/DO interface operates synchronously with CS and CLK, supporting both MSB-first and LSB-first output modes depending on SE pin state.
It features ratiometric operation using VCC as reference or external voltage applied to REF, enabling full-scale encoding of sub-VCC analog spans. Input range is 0 V to VCC with TTL/MOS-compatible logic levels, and internal diode clamping protects against overvoltage up 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 signals. |
| Supply Voltage | 2.7 V to 3.6 V - enables direct integration into 3-V microcontroller systems without level-shifting. |
| Conversion Time | 32 µs at fCLK = 250 kHz - supports up to ~31.25 kSPS sampling rate for real-time monitoring applications. |
| Total Unadjusted Error | ±1 LSB - ensures monotonicity and guarantees no missing codes across full temperature range (0°C to 70°C). |
| Input Channels | 4-channel software-configurable MUX - allows flexible routing of analog inputs without external switching hardware. |
| Reference Mode | VCC or external REF - enables ratiometric measurement for sensor bridges or adjustable full-scale scaling. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems including HVAC controls and instrumentation. |
Pinout & Package
TLV0834CDR is packaged in a 14-pin SOIC (D package), 3.90 mm wide, with standard JEDEC outline and moisture sensitivity level 1 (260°C peak reflow). Pin 1 is located in quadrant Q1 per tape-and-reel specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad; must be left floating or tied to ground for mechanical stability only. |
| 2 (CS) | Chip select | Active-low enable that powers internal logic and initiates conversion sequence upon falling edge. |
| 3–6 (CH0–CH3) | Analog input channels | Configurable as single-ended, differential pairs (CH0/CH1, CH2/CH3), or pseudodifferential with COM. |
| 7 (DGTL GND) | Digital ground | Reference return for digital I/O; must be separated from ANLG GND with single-point connection. |
| 8 (VCC) | Power supply | Primary 2.7–3.6 V supply powering both analog and digital sections; requires local 0.1 µF decoupling. |
| 9 (DI) | Serial data input | Accepts 5-bit multiplexer address and start bit; sampled on rising CLK edge during addressing phase. |
| 10 (CLK) | Serial clock input | Drives internal shift register and SAR timing; duty cycle 40–60% required for reliable operation. |
| 11 (SARS) | SAR status output | Active-high open-drain flag indicating conversion in progress; used for polling or interrupt generation. |
| 12 (DO) | Serial data output | MSB-first 8-bit result followed by LSB; high-impedance when CS is high or during conversion. |
| 13 (REF) | Reference voltage input | Accepts external reference (0 V to VCC) or connects to VCC for ratiometric operation. |
| 14 (ANLG GND) | Analog ground | Return path for analog inputs and internal ladder; critical for noise-free conversion accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input mode | Single-ended, differential, or pseudodifferential assignment per channel via serial command - eliminates need for external op-amp circuitry. |
| Serial interface with bidirectional capability | DI and DO can share one microcontroller I/O line using tri-state timing - reduces GPIO count in resource-limited designs. |
| Ratiometric operation | VCC used as reference enables stable measurements under varying supply conditions - ideal for battery-powered sensors. |
| Low-power consumption | 0.2–0.75 mA typical ICC - extends operational life in always-on monitoring nodes and portable instrumentation. |
| TTL/MOS logic compatibility | VIH ≥ 2 V, VOL ≤ 0.4 V at 1.6 mA sink - ensures interoperability with legacy 3-V and 5-V microcontrollers without level translators. |
Applications
| Industrial Sensor Interface | Portable Data Logger |
|---|---|
|
Use Scenario: Acquisition of temperature, pressure, and humidity signals from multiple analog sensors in factory automation panels. IC Role / Device Role / Timing Role: 4-channel ADC digitizes conditioned sensor outputs with synchronized serial readout to an ARM Cortex-M0+ MCU. Use Value: Eliminates external MUX and reference ICs while maintaining ±1 LSB accuracy across 0°C–70°C ambient range. |
Use Scenario: Battery-powered environmental monitor logging soil moisture, light intensity, and ambient CO₂ over 72-hour cycles. IC Role / Device Role / Timing Role: Low-quiescent-current ADC performs burst-mode sampling every 5 seconds, entering standby between conversions. Use Value: 0.2 mA typical supply current extends coin-cell battery life beyond 6 months without compromising resolution. |
| 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: Differential input mode rejects common-mode noise from PWM switching; serial output avoids routing analog traces across PCB. Use Value: ±1/4 LSB common-mode error ensures accurate torque estimation even under EMI-heavy motor drive environments. |
Use Scenario: Front-end digitization of ECG electrode signals and pulse oximeter photodiode outputs in handheld diagnostics. IC Role / Device Role / Timing Role: Pseudodifferential mode uses common electrode as REF, rejecting body-bias offsets while preserving signal integrity. Use Value: Full 8-bit resolution retained over 0–3.3 V input span enables detection of sub-millivolt biopotential variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel, 8-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC0834CN | Legacy 8-bit ADC with identical pinout and function but includes internal Zener regulator; requires ≥4.5 V supply. | Not suitable for 3-V systems; higher supply headroom needed for internal reference generation. | Select TLV0834CDR for 3-V operation; choose ADC0834CN only if existing 5-V infrastructure prohibits redesign. |
| TLV0834CPW | TSSOP-16 package (16-pin), same electrical specs, -40°C to 85°C extended temp range, smaller footprint (5.0 × 4.4 mm vs. SOIC's 8.65 × 3.90 mm). | Better suited for high-density portable designs requiring thermal robustness beyond 70°C. | Choose TLV0834CPW for space-constrained or extended-temperature applications; TLV0834CDR preferred for cost-sensitive commercial boards with standard SOIC footprints. |
Compared with ADC0834CN and TLV0834CPW, the TLV0834CDR offers optimal balance of 3-V compatibility, SOIC manufacturability, and commercial-temperature performance-making it the default choice for new 3-V embedded data acquisition designs where board area and supply voltage are constrained.
Availability
TLV0834CDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable data loggers, motor control feedback systems, and medical vital sign monitors requiring stable component supply and long-term production continuity.
Supply support for TLV0834CDR 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 TLV0834CDR belongs to TI's TLV083x family of low-voltage serial ADCs, engineered specifically for 3-V microcontroller-based systems needing compact, software-flexible analog digitization without external support components.
FAQ
What is the maximum clock frequency supported by TLV0834CDR?
The TLV0834CDR supports up to 600 kHz clock frequency when VCC = 3.3 V, and 250 kHz when VCC = 2.7 V. At 600 kHz, conversion time reduces to approximately 13.3 µs (8 clock periods), enabling higher sampling rates in systems with stable 3.3-V supplies. The device requires a 40–60% clock duty cycle for reliable operation across the full range.
Does TLV0834CDR require an external reference voltage?
No - TLV0834CDR operates ratiometrically using VCC as its reference, eliminating the need for an external reference in most applications. However, an external voltage (0 V to VCC) may be applied to the REF pin to encode a narrower analog input span across the full 8-bit range, improving effective resolution for sub-VCC signals.
Can TLV0834CDR perform differential measurements?
Yes - TLV0834CDR supports true differential input mode across adjacent channel pairs (CH0/CH1 and CH2/CH3), with programmable polarity. This enables common-mode rejection of noise and offset compensation, delivering ±1/4 LSB common-mode error performance as specified in the datasheet under differential mode conditions.
What is the meaning of "SARS" on TLV0834CDR?
SARS (Successive Approximation Register Status) is an active-high, open-drain output that goes high when conversion begins and returns low upon completion. It provides hardware-ready signaling for microcontrollers to poll or trigger interrupts, avoiding fixed-delay timing loops and ensuring deterministic data capture timing for TLV0834CDR.
Is TLV0834CDR pin-compatible with ADC0834?
Yes - TLV0834CDR is functionally equivalent to ADC0834 at 3-V supply and shares identical pinout and serial protocol, but omits the internal Zener regulator network. This makes TLV0834CDR a direct drop-in replacement in 3-V designs, while ADC0834 requires ≥4.5 V and cannot operate at 3 V.
TLV0834CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 14-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV0834CDR FAQ
1.How can I place an order for TLV0834CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV0834CDR 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 TLV0834CDR reliable?
The price and inventory of TLV0834CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV0834CDR is usually 5 days.
3.What payment methods are accepted for TLV0834CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV0834CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV0834CDR?
TLV0834CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV0834CDR 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 TLV0834CDR?
For technical support, including TLV0834CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV0834CDR requirements.
6.How does Aetrix verify that TLV0834CDR is sourced from the original manufacturer or authorized distributors?
All TLV0834CDR 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 TLV0834CDR meets industry standards.
7.What is the process for return or replacement of TLV0834CDR?
All TLV0834CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV0834CDR, 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 TLV0834CDR part is unused and in its original packaging.
Return procedure for TLV0834CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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