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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Texas Instruments TLV0834CD

Name: TLV0834CD
Brand: Texas Instruments
SKU: TLV0834CD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLV0834CD

Manufacturer:: Texas Instruments

Category:: Analog to Digital Converters (ADC)

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TLV0834CD.pdf

Description:: IC ADC 8BIT SAR 14SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TLV0834CD 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 or differential input configurations and is used in sensor signal conditioning for industrial monitoring systems.

For engineers reviewing the TLV0834CD datasheet, TLV0834CD pinout, TLV0834CD application, or TLV0834CD equivalent, key selection considerations include its SOIC-14 package, ratiometric operation with V_CC reference, software-configurable multiplexer addressing, and compatibility with TTL/MOS logic levels in microprocessor-interfaced data acquisition.

Technical Context

The TLV0834CD implements a sample-data-comparator architecture with internal successive-approximation register (SAR) and resistive ladder network. Its serial control interface uses a 5-bit shift register for channel and mode selection, with start-bit–driven addressing and MSB-first output data format.

Conversion is initiated by CS low, followed by clocked DI input containing start bit and 3–4 bit assignment word. After multiplexer settling, the SAR performs 8-clock-cycle conversion, with SARS high during active conversion and DO outputting 8-bit result MSB first, then LSB first in TLV0834-specific sequence.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	8-bit - delivers 256 discrete digital codes across full-scale input range
Supply Voltage Range	2.7 V to 3.6 V - enables direct integration into 3-V systems without level-shifting
Conversion Time	32 µs at f_CLK = 250 kHz - defines minimum sampling period for real-time sensor monitoring
Total Unadjusted Error	±1 LSB - specifies worst-case deviation from ideal transfer curve without calibration
Input Channels	4-channel multiplexer - supports sequential sampling of up to four analog sensors or signals
Reference Mode	Ratiometric or V_CC-based - eliminates need for external precision reference in cost-sensitive designs
Digital Interface	3-wire serial (CS, CLK, DI/DO) - reduces PCB routing complexity versus parallel ADCs

Pinout & Package

TLV0834CD is housed in a 14-pin SOIC (D) package with 1.27 mm pitch, 8.65 mm × 3.91 mm body size, and RoHS-compliant NiPdAu lead finish (MSL Level-1).

Pin/Terminal	Circuit Role	Design Meaning
1 (NC)	No internal connection	Unused pad; must remain unconnected to avoid parasitic coupling
2 (CS)	Chip select	Active-low enable for serial interface and internal logic; must stay low throughout conversion
3–6 (CH0–CH3)	Analog input channels	Configurable as single-ended or differential pairs (e.g., CH0/CH1); polarity assigned via serial address
7 (DGTL GND)	Digital ground	Return path for digital I/O; requires separate low-impedance connection from ANLG GND
8 (V_CC)	Power supply	Provides bias for both analog and digital sections; decoupling capacitor mandatory near pin
9 (DI)	Serial data input	Accepts start bit + channel/address bits during CS low; only sampled before conversion starts
10 (CLK)	Serial clock input	Synchronizes DI sampling and DO output; duty cycle 40–60% required for reliable operation
11 (SARS)	SAR status output	Active-high open-drain signal indicating conversion in progress; used for timing handshaking
12 (DO)	Serial data output	3-state output delivering MSB-first 8-bit result, then LSB-first continuation; high-impedance when CS high
13 (REF)	Reference voltage input	Accepts external reference or connects to V_CC; sets full-scale input range (0 V to V_REF)
14 (ANLG GND)	Analog ground	Return path for analog inputs and reference; must be star-connected to minimize noise coupling

Key Features

Feature	Design Value
Software-configurable input mode	Single-ended, differential, or pseudodifferential assignment per channel via serial command - enables flexible sensor interfacing without hardware changes
Low-voltage serial interface	TTL/MOS-compatible I/O with VIH ≥ 2 V and VOL ≤ 0.4 V at 3.3 V - ensures interoperability with 3-V microcontrollers and FPGAs
Internal multiplexer settling delay	One-clock-period automatic insertion after channel selection - guarantees stable analog input before conversion begins
High-impedance outputs	DO and SARS enter high-Z state when CS high - allows multiple devices on shared bus without external tri-state logic
Low quiescent current	0.2–0.75 mA typical ICC at 3.3 V - supports battery-powered or energy-constrained embedded systems

Applications

Industrial Sensor Interface	Microcontroller-Based Data Logger
Use Scenario: Monitoring temperature, pressure, and humidity sensors in factory automation panels with limited board space and 3-V power rails. IC Role / Device Role / Timing Role: ADC front-end converting analog sensor outputs to digital values for local MCU processing and CAN bus transmission. Use Value: 4-channel multiplexing reduces component count vs. discrete ADCs; ratiometric operation eliminates external reference cost and drift sensitivity.	Use Scenario: Portable environmental logger acquiring readings from thermistors and photoresistors over extended periods on coin-cell batteries. IC Role / Device Role / Timing Role: Low-power analog digitizer enabling periodic wake-up, conversion, and sleep cycles controlled by MCU GPIO and timer interrupts. Use Value: 0.2 mA typical supply current extends battery life; serial interface minimizes I/O pin usage and PCB trace count.
Motor Control Feedback	Medical Instrument Signal Conditioning
Use Scenario: Sampling current-sense amplifier outputs and potentiometer wiper voltages in closed-loop BLDC motor drives. IC Role / Device Role / Timing Role: High-fidelity analog acquisition block providing real-time feedback for PWM duty cycle adjustment and fault detection. Use Value: ±1 LSB error ensures accurate current measurement resolution; differential input mode rejects common-mode noise from switching power stages.	Use Scenario: Digitizing ECG electrode signals and transducer outputs in handheld diagnostic tools requiring compact, low-noise analog front-ends. IC Role / Device Role / Timing Role: Precision ADC stage preceding digital filtering and display processing in battery-operated medical devices. Use Value: Separate analog/digital ground pins reduce noise coupling; 32 µs conversion time supports >30 kSPS effective sampling for bio-signal fidelity.

Industrial Sensor Interface

Microcontroller-Based Data Logger

Use Scenario: Monitoring temperature, pressure, and humidity sensors in factory automation panels with limited board space and 3-V power rails.

IC Role / Device Role / Timing Role: ADC front-end converting analog sensor outputs to digital values for local MCU processing and CAN bus transmission.

Use Value: 4-channel multiplexing reduces component count vs. discrete ADCs; ratiometric operation eliminates external reference cost and drift sensitivity.

Use Scenario: Portable environmental logger acquiring readings from thermistors and photoresistors over extended periods on coin-cell batteries.

IC Role / Device Role / Timing Role: Low-power analog digitizer enabling periodic wake-up, conversion, and sleep cycles controlled by MCU GPIO and timer interrupts.

Use Value: 0.2 mA typical supply current extends battery life; serial interface minimizes I/O pin usage and PCB trace count.

Motor Control Feedback

Medical Instrument Signal Conditioning

Use Scenario: Sampling current-sense amplifier outputs and potentiometer wiper voltages in closed-loop BLDC motor drives.

IC Role / Device Role / Timing Role: High-fidelity analog acquisition block providing real-time feedback for PWM duty cycle adjustment and fault detection.

Use Value: ±1 LSB error ensures accurate current measurement resolution; differential input mode rejects common-mode noise from switching power stages.

Use Scenario: Digitizing ECG electrode signals and transducer outputs in handheld diagnostic tools requiring compact, low-noise analog front-ends.

IC Role / Device Role / Timing Role: Precision ADC stage preceding digital filtering and display processing in battery-operated medical devices.

Use Value: Separate analog/digital ground pins reduce noise coupling; 32 µs conversion time supports >30 kSPS effective sampling for bio-signal fidelity.

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	Same 4-channel 8-bit SAR architecture but includes internal Zener regulator; requires 5-V supply; not rated for 3-V operation	Designed for legacy 5-V systems; incompatible with 3-V logic and supply rails	Select TLV0834CD for new 3-V designs; ADC0834CN only if maintaining 5-V infrastructure and needing internal reference regulation
TLV0834CPW	Identical electrical specs and functionality; differs only in TSSOP-16 package (16-pin, 4.4 mm × 5 mm), no NC pin, added SE pin for LSB-first control	Smaller footprint and finer pitch; SE pin enables LSB-first output mode not available on SOIC-14 variant	Choose TLV0834CPW for space-constrained layouts or when LSB-first serial protocol is required; TLV0834CD preferred for through-hole prototyping or legacy SOIC footprints

Compared with ADC0834CN, TLV0834CD enables true 3-V system integration without level translation, while TLV0834CPW offers identical performance in a smaller package with enhanced serial flexibility-making TLV0834CD the optimal choice for cost-sensitive, standard SOIC-based 3-V data acquisition.

Availability

TLV0834CD is available at Aetrix Electronics and suitable for industrial sensor interface, microcontroller-based data logging, and motor control feedback applications requiring stable component supply and long-term manufacturability.

Supply support for TLV0834CD 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 TLV0834CD belongs to TI's low-voltage analog-to-digital converter family, designed specifically for 3-V embedded systems where power efficiency, small footprint, and microprocessor-friendly serial interfaces are critical.

FAQ

What is the maximum clock frequency supported by TLV0834CD?

The TLV0834CD supports up to 250 kHz at V_CC = 2.7 V and up to 600 kHz at V_CC = 3.3 V. At 250 kHz, conversion time is fixed at 32 µs (8 clock cycles plus settling). Exceeding recommended frequencies may cause timing violations or incomplete conversions, so design must adhere to the clock duty cycle (40–60%) and setup/hold timing requirements specified in the datasheet for TLV0834CD.

Does TLV0834CD require an external voltage reference?

No, TLV0834CD operates ratiometrically using V_CC as the reference, enabling 0 V to V_CC input range without external components. However, REF pin can accept an external precision reference (e.g., 2.5 V) to improve accuracy or scale input range independently of supply voltage - a capability confirmed in the functional description and electrical characteristics tables for TLV0834CD.

How does the TLV0834CD handle differential input configurations?

The TLV0834CD supports differential inputs via adjacent channel pairs (e.g., CH0/CH1), with polarity assignable via serial address bits. The functional description confirms that differential mode compares positive and negative terminals, and output is all zeros if IN(+) < IN(−). This behavior is explicitly defined in the MUX-address control logic table and applies directly to TLV0834CD, not just the TLV0838 family.

Can TLV0834CD share DI and DO on a single microcontroller I/O line?

Yes, TLV0834CD supports bidirectional single-wire serial communication: DI is sampled only during the address phase (before conversion starts), while DO is active and driven only after conversion begins and remains in high-impedance when CS is high. This timing separation - documented in the functional description and sequence-of-operation diagrams - allows safe reuse of one MCU GPIO for both input and output in TLV0834CD implementations.

What is the operating temperature range for TLV0834CD?

The TLV0834CD is characterized for operation from 0°C to 70°C, as confirmed in the "AVAILABLE OPTIONS" table and "recommended operating conditions" section. This commercial-grade temperature range is distinct from the extended –40°C to 85°C range of TLV0834ID variants, and applies specifically to the TLV0834CD part number per TI's official packaging addendum.

TLV0834CD Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Bulk

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:: -

TLV0834CD FAQ

1.How can I place an order for TLV0834CD through Aetrix?

Please submit a Request for Quotation (RFQ) for TLV0834CD 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 TLV0834CD reliable?

The price and inventory of TLV0834CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV0834CD is usually 5 days.

3.What payment methods are accepted for TLV0834CD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV0834CD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLV0834CD?

TLV0834CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLV0834CD 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 TLV0834CD?

For technical support, including TLV0834CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV0834CD requirements.

6.How does Aetrix verify that TLV0834CD is sourced from the original manufacturer or authorized distributors?

All TLV0834CD 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 TLV0834CD meets industry standards.

7.What is the process for return or replacement of TLV0834CD?

All TLV0834CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV0834CD, 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 TLV0834CD part is unused and in its original packaging.

Return procedure for TLV0834CD:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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