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Texas Instruments TLC0834ID
- Part No.:
- TLC0834ID
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC0834ID.pdf
- Description:
- IC ADC 8BIT SAR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,703
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Product details
Overview
TLC0834ID from Texas Instruments is a 4-channel, 8-bit successive-approximation analog-to-digital converter (ADC) with serial control interface, operating over –40°C to 85°C, supporting single-ended or differential input configurations, ratiometric operation with 5-V reference, and 32 µs conversion time at 250 kHz clock - used in industrial sensor signal conditioning and embedded data acquisition systems.
For engineers reviewing the TLC0834ID datasheet, TLC0834ID pinout, TLC0834ID application, or TLC0834ID equivalent, this page delivers verified electrical specs, SOIC-14 package mapping, functional alternatives, real-world use scenarios, and supply-chain support for design-in and volume procurement.
Technical Context
The TLC0834ID implements a sample-data comparator architecture with internal SAR logic, enabling 8-bit resolution via successive approximation. It features software-configurable multiplexer addressing through a 3–4-bit serial command sequence delivered via DI/CLK/CS, with MSB-first or LSB-first output selectable by external control.
Its analog front-end supports four single-ended inputs (CH0–CH3), pseudodifferential mode using common-mode reference, and true differential pairs (e.g., CH0/CH1), all compatible with TTL/MOS logic levels. Conversion is initiated by CS low, followed by clocked address bits, with SARS indicating active conversion status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete digital codes across 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 - includes offset, full-scale, linearity, and multiplexer errors without calibration |
| Input Channels | 4-channel multiplexer - configurable as single-ended, differential, or pseudodifferential inputs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade environmental reliability |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V logic and analog rails |
| Reference Input | External REF pin - supports ratiometric or fixed 5-V reference for flexible scaling |
Pinout & Package
Package: SOIC-14 (D package), 14-pin small-outline integrated circuit with gull-wing leads, RoHS-compliant NIPDAU finish, MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unbonded pad - must be left floating or tied to ground per layout best practice |
| 2 (CS) | Chip select | Active-low enable - initiates conversion and enables serial interface logic when low |
| 3–6 (CH0–CH3) | Analog input channels | Four configurable analog inputs - assigned polarity and mode via serial address word |
| 7 (DGTL GND) | Digital ground | Return path for digital I/O circuits - separate from analog ground to minimize noise coupling |
| 8 (VCC) | Power supply | +4.5 V to +5.5 V digital/analog supply - decoupling capacitor required near pin |
| 9 (DI) | Data input | Serial address/data input - accepts start bit and 3–4-bit channel/address configuration |
| 10 (CLK) | Serial clock | Input clock for shifting address bits and controlling conversion timing - 10–600 kHz range |
| 11 (SARS) | SAR status | Open-drain status flag - high during conversion, low when complete or idle |
| 12 (DO) | Data output | Serial data output - MSB-first by default; LSB-first enabled via SE on TLC0838 only (not applicable) |
| 13 (REF) | Reference voltage | External reference input - sets full-scale range; ratiometric to VCC or fixed 5 V |
| 14 (ANLG GND) | Analog ground | Return path for analog inputs and reference - isolated from DGTL GND to preserve SNR |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input mode | Single-ended, differential, or pseudodifferential assignment per channel via serial command - eliminates hardware reconfiguration |
| Serial interface compatibility | DI/DO/CLK/CS signals fully compatible with TTL and MOS logic families - simplifies microcontroller interfacing |
| Remote sensor digitization | Onboard multiplexer and serial output allow ADC placement at sensor location - reduces analog trace length and EMI susceptibility |
| Low-power operation | Typical supply current of 1.25 mA at 5 V - suitable for battery-backed or energy-constrained industrial nodes |
| Flexible reference architecture | REF pin accepts externally derived voltage - enables full 8-bit resolution over sub-5-V analog spans (e.g., 0–2.5 V) |
Applications
| Industrial Sensor Interface | Embedded Data Logger |
|---|---|
Use Scenario: Monitoring temperature, pressure, and humidity sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: 4-channel ADC digitizing analog outputs from calibrated transducers, synchronized to host MCU via SPI-like serial protocol. Use Value: Enables compact, low-noise signal chain with minimal external components - no external op-amps or level shifters needed for 0–5 V sensors. | Use Scenario: Standalone environmental monitoring unit logging sensor data to SD card or flash memory. IC Role / Device Role / Timing Role: Primary analog acquisition engine handling multiple sensor inputs under firmware control with autonomous sampling intervals. Use Value: Serial interface reduces MCU pin count requirement; 32 µs conversion allows >30 kSPS aggregate throughput across channels. |
| Motor Control Feedback | Power Supply Monitoring |
Use Scenario: Sampling current-sense amplifier outputs and position encoder signals in BLDC motor drives. IC Role / Device Role / Timing Role: High-reliability ADC capturing analog feedback for closed-loop current/voltage regulation in real-time control loops. Use Value: ±1 LSB total unadjusted error ensures accurate current measurement within ±0.4% FS - critical for torque consistency and overcurrent protection. | Use Scenario: Real-time monitoring of rail voltages (12 V, 5 V, 3.3 V) and thermal sensors in telecom power shelves. IC Role / Device Role / Timing Role: Multi-rail voltage monitor interfaced to system management controller via shared serial bus. Use Value: Ratiometric operation with internal 5-V reference eliminates need for precision external reference - reduces BOM cost and board area. |
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 identical architecture but lacks internal Zener regulator network; same pinout and timing; rated 0°C to 70°C | Not qualified for extended temperature range - unsuitable for industrial environments exceeding 70°C ambient | Select TLC0834ID when operating in –40°C to 85°C environments; choose ADC0834CN only for commercial-grade applications with tighter cost constraints |
| TLC0834CDR | Same die and functionality; differs only in packaging (SOIC-14 tape-and-reel vs. tube) and temperature grade (0°C to 70°C) | Lower temperature rating limits use in automotive under-hood or outdoor industrial enclosures | TLC0834CDR is drop-in compatible for prototyping or commercial designs; TLC0834ID required where extended temperature compliance is mandatory |
Compared with ADC0834CN and TLC0834CDR, the TLC0834ID provides guaranteed operation across –40°C to 85°C while retaining identical serial interface behavior, conversion accuracy, and pin compatibility - making it the sole choice for thermally demanding industrial deployments.
Availability
TLC0834ID is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded data loggers, motor control feedback systems, and power supply monitoring applications requiring stable component supply across extended temperature ranges.
Supply support for TLC0834ID 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The TLC0834ID belongs to TI's legacy precision data acquisition product line, designed specifically for cost-sensitive, medium-speed industrial measurement systems requiring simple serial interfacing and robust analog performance.
FAQ
What is the maximum clock frequency supported by the TLC0834ID?
The TLC0834ID supports a clock frequency range of 10 kHz to 600 kHz per the recommended operating conditions. At 600 kHz, conversion time remains eight clock periods (13.3 µs), but timing margins for setup/hold and propagation delay must be validated per layout and load. The typical 250 kHz clock yields a guaranteed 32 µs conversion time and is recommended for robust operation across the full temperature range of the TLC0834ID.
Does the TLC0834ID support differential input mode?
Yes, the TLC0834ID supports true differential input mode for adjacent channel pairs (e.g., CH0/CH1 or CH2/CH3), with programmable polarity selection via the serial address word. This enables common-mode rejection and offset compensation - critical for noisy industrial environments. Unlike the TLC0838ID, it does not support a dedicated common (COM) terminal for pseudodifferential operation.
What is the function of the SARS pin on the TLC0834ID?
The SARS (Successive Approximation Register Status) pin on the TLC0834ID 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 waits. This simplifies firmware design and improves timing determinism in real-time systems using the TLC0834ID.
Can the TLC0834ID operate with a 3.3-V supply?
No, the TLC0834ID requires a minimum supply voltage of 4.5 V and is specified only for 4.5 V to 5.5 V operation. Its analog input range is 0 to VCC, and logic thresholds are TTL-compatible - meaning 3.3-V microcontrollers can interface safely only if their outputs meet VIH ≥ 2.0 V and VIL ≤ 0.8 V, and if the REF voltage is set accordingly. The TLC0834ID itself cannot be powered from 3.3 V.
Is the TLC0834ID pin-compatible with the ADC0834?
Yes, the TLC0834ID is functionally equivalent and pin-compatible with the ADC0834, as explicitly stated in the datasheet: "Functionally Equivalent to the ADC0834 and ADC0838 Without the Internal Zener Regulator Network." Both share identical SOIC-14 pinout, timing, serial protocol, and electrical specifications - enabling direct replacement where extended temperature range (–40°C to 85°C) is required, as the ADC0834 typically qualifies only to 70°C.
TLC0834ID 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):
- 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-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLC0834ID FAQ
1.How can I place an order for TLC0834ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC0834ID 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 TLC0834ID reliable?
The price and inventory of TLC0834ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC0834ID is usually 5 days.
3.What payment methods are accepted for TLC0834ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC0834ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC0834ID?
TLC0834ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC0834ID 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 TLC0834ID?
For technical support, including TLC0834ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC0834ID requirements.
6.How does Aetrix verify that TLC0834ID is sourced from the original manufacturer or authorized distributors?
All TLC0834ID 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 TLC0834ID meets industry standards.
7.What is the process for return or replacement of TLC0834ID?
All TLC0834ID units undergo pre-shipment inspection (PSI). If there is an issue with TLC0834ID, 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 TLC0834ID part is unused and in its original packaging.
Return procedure for TLC0834ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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