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Texas Instruments TLV0834CN
- Part No.:
- TLV0834CN
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
TLV0834CN.pdf
- Description:
- SAR ADC, 8-BIT, 4 CH, SERIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,434
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Product details
Overview
TLV0834CN 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 low-voltage industrial monitoring systems.
For engineers reviewing the TLV0834CN datasheet, TLV0834CN pinout, TLV0834CN application, or TLV0834CN equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters across temperature (0°C to 70°C), and real-world interface considerations for microprocessor-based data acquisition designs.
Technical Context
The TLV0834CN implements a sample-data-comparator SAR architecture with an internal 8-bit resistive ladder and comparator. Its serial interface uses a 5-bit shift register for multiplexer addressing and supports both MSB-first and LSB-first output modes via the SE pin.
Channel selection and input polarity (single-ended/differential) are software-configured via serial DI stream; differential pairs are fixed (e.g., CH0/CH1), and the common-mode input range spans 0 V to VCC+0.05 V. The device operates ratiometrically using VCC as reference or accepts an external REF voltage up to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete digital codes over full-scale analog input range |
| Supply Voltage Range | 2.7 V to 3.6 V - compatible with 3-V logic systems and battery-powered operation |
| Conversion Time | 32 µs at fCLK = 250 kHz - enables up to ~31.25 kSPS sustained sampling rate |
| Total Unadjusted Error | ±1 LSB - includes offset, full-scale, linearity, and multiplexer errors without calibration |
| Input Channels | 4-channel software-configurable multiplexer - supports single-ended, differential, or pseudodifferential inputs |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded applications |
| Reference Mode | Ratiometric (VCC) or external REF - allows full 8-bit encoding of sub-VCC analog spans |
Pinout & Package
TLV0834CN is supplied in a 14-pin plastic DIP (N package) with 0.3-inch body width. Pin 1 is located at the top-left corner when viewed from the top with the notch or dot oriented left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must be left floating or tied to GND per layout best practice |
| 2 (CS) | Chip Select | Active-low enable for serial interface and internal logic; must remain low during full conversion cycle |
| 3 (CH0) | Analog Input Channel 0 | Positive terminal for single-ended or differential input pair CH0/CH1 |
| 4 (CH1) | Analog Input Channel 1 | Negative terminal for differential pair CH0/CH1; positive for CH1/CH2 pair |
| 5 (CH2) | Analog Input Channel 2 | Positive terminal for single-ended or differential input pair CH2/CH3 |
| 6 (CH3) | Analog Input Channel 3 | Negative terminal for differential pair CH2/CH3 |
| 7 (DGTL GND) | Digital Ground | Return path for digital I/O signals; should be separated from analog ground and joined at single point |
| 8 (VCC) | Power Supply | 2.7–3.6 V supply for digital and analog circuitry; also serves as default reference |
| 9 (DI) | Data Input | Serial address/data input for multiplexer configuration; sampled on CLK rising edge |
| 10 (CLK) | Serial Clock | Asynchronous master clock (10–250 kHz at 2.7 V); controls timing of address latching and conversion start |
| 11 (SARS) | SAR Status | Open-drain active-high indicator signaling conversion in progress |
| 12 (DO) | Data Output | Serial MSB-first or LSB-first digital output; high-impedance when CS is high |
| 13 (REF) | Reference Voltage Input | Accepts external reference up to VCC; sets full-scale analog input range |
| 14 (ANLG GND) | Analog Ground | Return path for analog inputs and internal ladder; critical for noise-sensitive ADC performance |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input mode | Selects single-ended, differential, or pseudodifferential operation per channel via serial command |
| MSB-first / LSB-first output flexibility | SE pin controls output sequence order, enabling compatibility with diverse microcontroller serial peripherals |
| Low-power operation | Typical ICC = 0.2–0.75 mA at 3.3 V - suitable for battery-backed or energy-constrained systems |
| TTL/MOS-compatible I/O | Logic thresholds meet standard TTL levels; no level-shifting required for 3-V microcontrollers |
| Remote sensor interfacing | Serial link eliminates long analog traces; DO remains high-Z until CS asserts, reducing bus contention |
Applications
| Industrial Sensor Monitoring | Embedded Data Loggers |
|---|---|
|
Use Scenario: Continuous voltage measurement from 4 thermistor, RTD, or pressure transducer outputs in factory-floor equipment. IC Role / Device Role / Timing Role: 4-channel analog front-end digitizing sensor outputs with configurable gain and common-mode rejection. Use Value: Eliminates need for external multiplexer and op-amp signal conditioning; ±1 LSB accuracy ensures reliable threshold detection. |
Use Scenario: Battery-powered environmental logger capturing temperature, humidity, and light intensity at 100-ms intervals. IC Role / Device Role / Timing Role: Low-voltage ADC with serial interface minimizing MCU pin count and PCB area. Use Value: 2.7–3.6 V operation extends battery life; 32 µs conversion enables rapid sampling without CPU overhead. |
| Motor Control Feedback | Medical Diagnostic Equipment |
|
Use Scenario: Acquisition of current-sense and position feedback signals in BLDC motor drives with isolated power rails. IC Role / Device Role / Timing Role: Differential-input ADC rejecting common-mode noise from switching power stages. Use Value: CH0/CH1 differential pair rejects >90% of PWM-induced noise; ratiometric operation maintains accuracy across supply drift. |
Use Scenario: Portable ECG or pulse oximeter acquiring biopotential signals with minimal external components. IC Role / Device Role / Timing Role: Single-chip ADC with programmable input polarity and REF scaling for small-signal amplification. Use Value: Pseudodifferential mode allows biasing all channels to non-ground reference (e.g., 1.65 V), simplifying front-end design. |
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 | Functionally equivalent at 3-V supply but includes internal Zener regulator network; higher quiescent current (1.5 mA typical) | Less suitable for ultra-low-power designs; requires external 5-V supply or charge pump for Zener bias | Choose TLV0834CN for native 3-V operation and lower ICC; choose ADC0834CN only if legacy 5-V system integration is required |
| TLV0834CD | Same silicon die in SOIC-14 package; identical electrical specs; rated for same 0°C to 70°C range | Requires PCB redesign for surface-mount assembly; offers better thermal performance and smaller footprint | Choose TLV0834CN for through-hole prototyping or legacy DIP layouts; choose TLV0834CD for volume production with automated assembly |
Compared with ADC0834CN, TLV0834CN eliminates the internal Zener network for true 3-V-native operation and lower power; compared with TLV0834CD, it retains DIP compatibility while sharing identical conversion accuracy, timing, and interface behavior.
Availability
TLV0834CN is available at Aetrix Electronics and suitable for industrial sensor monitoring, embedded data loggers, motor control feedback, and medical diagnostic equipment requiring stable component supply and long-term obsolescence management.
Supply support for TLV0834CN 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 TLV0834CN belongs to TI's low-voltage, serial-interface ADC family designed specifically for cost-sensitive, space-constrained, and battery-operated systems requiring robust 8-bit resolution without external support components.
FAQ
What is the maximum clock frequency supported by TLV0834CN?
The TLV0834CN supports up to 250 kHz clock frequency when operated at VCC = 2.7 V, and up to 600 kHz at VCC = 3.3 V. At 250 kHz, conversion time is guaranteed at 32 µs. Exceeding recommended clock limits may cause timing violations or increased total unadjusted error beyond ±1 LSB.
Does TLV0834CN require an external reference voltage?
No, TLV0834CN operates ratiometrically using VCC as its reference, enabling full 8-bit encoding of 0 V to VCC input range. An external REF voltage may be applied to scale the full-scale range to any value ≤ VCC - for example, 2.5 V REF yields 0–2.5 V input range with same 8-bit resolution.
How does the TLV0834CN handle differential input configurations?
The TLV0834CN supports fixed adjacent-channel differential pairs: CH0/CH1 and CH2/CH3. Polarity is software-selectable via serial address bits - either channel can serve as IN+ or IN−. When IN− exceeds IN+, the output code is 0x00. Common-mode rejection is achieved through matched internal ladder and comparator design.
Can TLV0834CN interface directly with a microcontroller GPIO without level shifters?
Yes, TLV0834CN inputs and outputs are TTL- and MOS-compatible. With VCC = 3.3 V, VIH = 2.0 V min and VOL = 0.4 V max ensure reliable logic-level interoperability with 3-V microcontrollers such as MSP430, PIC16F, or STM32L series without external level translation.
What is the purpose of the SARS pin on TLV0834CN?
The SARS (Successive Approximation Register Status) pin is an open-drain output that goes high during conversion and returns low upon completion. It provides hardware-ready signaling to the host controller, eliminating the need for polling DO or implementing fixed delay loops - improving deterministic timing in real-time systems using TLV0834CN.
TLV0834CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
TLV0834CN FAQ
1.How can I place an order for TLV0834CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV0834CN 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 TLV0834CN reliable?
The price and inventory of TLV0834CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV0834CN is usually 5 days.
3.What payment methods are accepted for TLV0834CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV0834CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV0834CN?
TLV0834CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV0834CN 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 TLV0834CN?
For technical support, including TLV0834CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV0834CN requirements.
6.How does Aetrix verify that TLV0834CN is sourced from the original manufacturer or authorized distributors?
All TLV0834CN 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 TLV0834CN meets industry standards.
7.What is the process for return or replacement of TLV0834CN?
All TLV0834CN units undergo pre-shipment inspection (PSI). If there is an issue with TLV0834CN, 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 TLV0834CN part is unused and in its original packaging.
Return procedure for TLV0834CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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