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Texas Instruments TLC0834ING4
- Part No.:
- TLC0834ING4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC0834ING4.pdf
- Description:
- IC ADC 8BIT SAR 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,604
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Product details
Overview
TLC0834ING4 from Texas Instruments is a 4-channel, 8-bit successive-approximation analog-to-digital converter (ADC) with serial control interface, ratiometric operation capability, and software-configurable single-ended or differential input modes. It operates from a single 5-V supply, delivers ±1 LSB total unadjusted error, and achieves 32 µs conversion time at 250 kHz clock frequency. It is used in embedded sensor signal conditioning systems requiring compact, low-cost digitization with microprocessor serial bus integration.
For engineers reviewing the TLC0834ING4 datasheet, TLC0834ING4 pinout, TLC0834ING4 application, or TLC0834ING4 equivalent, key selection considerations include its 4-channel multiplexer architecture, TTL/MOS-compatible serial I/O, 0–5 V input range with external reference flexibility, and industrial temperature range (–40°C to +85°C) suitability for remote data acquisition and industrial monitoring designs.
Technical Context
The TLC0834ING4 implements a sample-data-comparator SAR architecture with an internal resistive ladder and successive-approximation register (SAR). Its serial interface uses a start bit followed by a 3–4-bit multiplexer address word to select channel and input configuration (single-ended/differential/pseudodifferential), enabling flexible analog front-end routing without parallel bus overhead.
Conversion is initiated by CS low assertion and synchronized to an external clock; DO outputs MSB-first data after one clock period of multiplexer settling, with SARS indicating active conversion status. Input polarity assignment and channel pairing (e.g., CH0/CH1 as differential pair) are fully software-defined via the serial address sequence.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - Provides 256 discrete digital codes over full-scale input range. |
| Conversion Time | 32 µs at fCLK = 250 kHz - Enables up to ~31.25 kSPS sustained sampling rate. |
| Total Unadjusted Error | ±1 LSB - Guarantees monotonicity and ≤±0.39% full-scale accuracy without calibration. |
| Input Range | 0 V to 5 V with single 5-V supply - Supports direct interfacing to 5-V sensors and logic without level-shifting. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial environments including motor control and PLC I/O modules. |
| Reference Flexibility | Ratiometric or external 5-V reference - Allows precise encoding of sub-5-V spans (e.g., 0–2.5 V) to full 8-bit resolution. |
| Logic Compatibility | TTL and MOS - Ensures reliable serial communication with legacy microcontrollers and FPGAs. |
Pinout & Package
The TLC0834ING4 is packaged in a 14-pin plastic DIP (N package), with 0.3-inch body width and through-hole mounting. Pin 1 is marked with a notch or dot; pins are numbered counter-clockwise from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad; must be left floating or tied to GND per layout best practice. |
| 2 (CS) | Chip Select | Active-low enable for serial addressing and conversion initiation; must remain low throughout conversion cycle. |
| 3–6 (CH0–CH3) | Analog input channels | Four configurable inputs supporting single-ended, differential (adjacent pairs), or pseudodifferential modes via software address. |
| 7 (DGTL GND) | Digital ground | Return path for digital I/O signals; requires separate low-impedance trace from analog ground. |
| 8 (VCC) | Power supply | +4.5 V to +5.5 V supply; decoupling capacitor (0.1 µF) required near pin. |
| 9 (DI) | Serial data input | Accepts start bit and multiplexer address; sampled on rising CLK edge during CS low. |
| 10 (CLK) | Serial clock input | Drives internal timing; supports 10–600 kHz; duty cycle 40–60% required for reliable operation. |
| 11 (SARS) | SAR status output | Active-high open-drain signal indicating conversion in progress; used for handshaking or interrupt generation. |
| 12 (DO) | Serial data output | MSB-first 8-bit result; enters high-impedance state when CS is high or during addressing phase. |
| 13 (REF) | Reference voltage input | Accepts external 5-V reference or connects to VCC for ratiometric operation; input resistance 1.3–5.9 kΩ. |
| 14 (ANLG GND) | Analog ground | Return path for analog inputs and reference; must be star-connected to DGTL GND at single point. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input mode | Single-ended, differential, or pseudodifferential channel assignment via serial address bits - eliminates external switch ICs and reduces BOM count. |
| Remote serial data link | Locates ADC at sensor source and transmits noise-immune digital data - avoids degradation of low-level analog signals over PCB traces or cables. |
| Bidirectional I/O option | DI and DO can share a single microcontroller I/O line using tristate timing - saves GPIO resources in resource-constrained embedded systems. |
| Industrial temperature grade | –40°C to +85°C operating range - enables deployment in factory automation, HVAC controls, and outdoor instrumentation without derating. |
| Low power consumption | Typical ICC = 1.25 mA at 5 V - supports battery-powered or energy-efficient designs with minimal thermal impact. |
Applications
| Industrial Sensor Interface | Motor Control Feedback |
|---|---|
Use Scenario: Digitizing thermistor, RTD, or pressure transducer outputs in programmable logic controllers (PLCs) and distributed I/O modules. IC Role / Device Role / Timing Role: 4-channel ADC performs simultaneous analog signal acquisition and serial transmission to host MCU over SPI-like interface. Use Value: Eliminates need for external multiplexers and level shifters while maintaining ±1 LSB accuracy across –40°C to +85°C ambient. | Use Scenario: Sampling current-sense amplifier outputs and position encoder signals in brushless DC motor drives. IC Role / Device Role / Timing Role: Configured in differential mode to reject common-mode noise from PWM switching; provides timely feedback for closed-loop current regulation. Use Value: 32 µs conversion time supports >30 kHz sampling rates required for field-oriented control (FOC) algorithms. |
| Environmental Monitoring System | Legacy Microcontroller Upgrade |
Use Scenario: Remote weather station collecting temperature, humidity, and light intensity via analog sensors powered from 5-V rail. IC Role / Device Role / Timing Role: Ratiometric operation ties REF to VCC, making measurement insensitive to supply drift; serial interface minimizes wiring to central controller. Use Value: Single 5-V supply simplifies power design; industrial temp rating ensures reliability in uncontrolled outdoor enclosures. | Use Scenario: Replacing obsolete 8-bit ADCs (e.g., ADC0834) in legacy 8051 or PIC-based equipment with minimal PCB changes. IC Role / Device Role / Timing Role: Functionally equivalent drop-in replacement with identical pinout, timing, and command structure - no firmware rework needed. Use Value: Maintains system functionality while extending product lifecycle with TI's actively supported, RoHS-compliant component. |
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 |
|---|---|---|---|
| ADC0834CCN | Functionally identical but lacks internal Zener regulator network; same pinout, timing, and electrical specs. | Identical use cases; however, ADC0834CCN is obsolete and no longer in production at TI. | Select TLC0834ING4 for new designs requiring long-term availability, RoHS compliance, and full manufacturer support. |
| TLC0834CD | Same die and functionality, but rated for 0°C to 70°C commercial temperature range and packaged in SOIC-14. | Suitable only for benign environments (e.g., consumer electronics, lab equipment); not rated for industrial thermal stress. | Choose TLC0834ING4 when operation beyond 70°C ambient or extended temperature qualification is required. |
Compared with ADC0834CCN and TLC0834CD, the TLC0834ING4 offers guaranteed industrial temperature operation (–40°C to +85°C), active production status, and PDIP packaging compatible with through-hole prototyping and legacy manufacturing - making it the robust, future-proof choice for industrial signal acquisition.
Availability
TLC0834ING4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control feedback loops, and environmental monitoring systems requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for TLC0834ING4 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, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and industrial-grade ICs.
The TLC0834 series belongs to TI's legacy precision ADC portfolio, designed specifically for cost-sensitive, microprocessor-integrated data acquisition in industrial, automotive, and instrumentation applications where serial interface simplicity and temperature resilience are critical.
FAQ
What is the maximum clock frequency supported by the TLC0834ING4?
The TLC0834ING4 supports a clock frequency range of 10 kHz to 600 kHz, with recommended operation between 100 kHz and 250 kHz for optimal accuracy and timing margin. At 250 kHz, conversion completes in 32 µs; higher frequencies may reduce settling time margin and increase total unadjusted error beyond ±1 LSB if layout or decoupling is suboptimal.
Does the TLC0834ING4 require an external reference voltage?
No - the TLC0834ING4 supports both ratiometric operation (with REF tied to VCC) and external reference configurations. When REF is connected to VCC, the ADC encodes input as a fraction of supply voltage; when driven by a precision 5-V reference, it achieves absolute measurement accuracy independent of VCC variation. Input resistance to REF is 1.3–5.9 kΩ.
Can the TLC0834ING4 perform differential measurements between non-adjacent channels?
No - differential mode is restricted to adjacent channel pairs (e.g., CH0/CH1 or CH2/CH3) as defined by the internal multiplexer architecture. The TLC0834ING4 does not support arbitrary differential combinations like CH0/CH3. Pseudodifferential mode using the common input is not available on the TLC0834ING4 (it is exclusive to the 8-channel TLC0838 family).
Is the TLC0834ING4 pin-compatible with the ADC0834?
Yes - the TLC0834ING4 is functionally and pin-compatible with the ADC0834, sharing identical pinout, timing behavior, serial protocol, and electrical specifications. It replaces the ADC0834 without requiring PCB or firmware modifications, offering improved long-term supply assurance and industrial temperature grading.
What is the purpose of the SARS pin on the TLC0834ING4?
The SARS (SAR Status) pin is an active-high, open-drain output that asserts during conversion to indicate "conversion in progress." It allows the host microcontroller to poll or generate an interrupt for synchronization, eliminating the need for fixed delay loops. SARS deasserts one clock period after the final bit is clocked out on DO, signaling completion of the 8-bit result.
TLC0834ING4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 20k
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
TLC0834ING4 FAQ
1.How can I place an order for TLC0834ING4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC0834ING4 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 TLC0834ING4 reliable?
The price and inventory of TLC0834ING4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC0834ING4 is usually 5 days.
3.What payment methods are accepted for TLC0834ING4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC0834ING4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC0834ING4?
TLC0834ING4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC0834ING4 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 TLC0834ING4?
For technical support, including TLC0834ING4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC0834ING4 requirements.
6.How does Aetrix verify that TLC0834ING4 is sourced from the original manufacturer or authorized distributors?
All TLC0834ING4 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 TLC0834ING4 meets industry standards.
7.What is the process for return or replacement of TLC0834ING4?
All TLC0834ING4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC0834ING4, 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 TLC0834ING4 part is unused and in its original packaging.
Return procedure for TLC0834ING4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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