My Inquiry
My Account
Texas Instruments ADC0834CCWM/NOPB
- Part No.:
- ADC0834CCWM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADC0834CCWM/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,955
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADC0834CCWM/NOPB from Texas Instruments is a 4-channel, 8-bit successive-approximation analog-to-digital converter with software-configurable single-ended or differential input modes, serial MICROWIRE-compatible interface, 32 μs conversion time, ±1 LSB total unadjusted error, and operation from a single 5 V supply. It is used in embedded sensor signal conditioning where compact serial ADCs interface directly to microcontrollers in industrial monitoring and data acquisition systems.
For engineers reviewing the ADC0834CCWM/NOPB datasheet, ADC0834CCWM/NOPB pinout, ADC0834CCWM/NOPB application, or ADC0834CCWM/NOPB equivalent, key selection considerations include its 4-channel multiplexer flexibility, ratiometric or fixed-reference operation, TTL/MOS logic compatibility, SOIC-14 package footprint, and absence of zero/full-scale calibration requirements.
Technical Context
The ADC0834CCWM/NOPB implements a sample-data comparator architecture with a resistor ladder DAC for successive approximation. Its 4-channel analog multiplexer supports both single-ended and differential configurations via 3-bit software-addressed control, with polarity programmability for adjacent channel pairs (e.g., CH0/CH1 or CH2/CH3).
Digital communication follows TI's MICROWIRE protocol: conversion is initiated by CS low, followed by a start bit and 2-bit MUX address on DI; DO outputs MSB-first serial data synchronized to CLK falling edges, with optional LSB-first mode disabled on this variant (no SE pin). The internal reference path accepts 3.5 kΩ minimum source impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - delivers 256 discrete output codes over full-scale range. |
| Total Unadjusted Error | ±1 LSB max - includes offset, full-scale, linearity, and multiplexer errors; no calibration required for basic accuracy. |
| Conversion Time | 32 μs - fixed duration at 250 kHz clock; enables up to ~31.25 kSPS throughput per channel. |
| Supply Voltage | 4.5 V to 6.3 V - operates from standard 5 V rail; tolerant of minor supply variation without performance loss. |
| Input Range | 0 V to VREF - ratiometric operation supported; VREF may be tied to VCC or external stable source. |
| Power Dissipation | 15 mW typical at 5 V - low quiescent current (0.9 mA ICC) suits battery-powered or thermally constrained designs. |
| Analog Input Channels | 4 single-ended or 2 differential - configurable per conversion; differential mode improves common-mode noise rejection. |
Pinout & Package
ADC0834CCWM/NOPB is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, 8.65 mm × 3.91 mm body size, and surface-mount compatibility. Pin functions are validated per TI SNAS531B Figure 3 (SOIC/NPA top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Positive Supply | Primary 4.5–6.3 V power input; powers analog and digital sections; internal zener referenced to V+ if used. |
| 2 (DIN) | Data Input | Serial address/data line for MUX configuration; accepts start bit + 2-bit channel/address word before conversion. |
| 3 (CLK) | Serial Clock Input | Master clock (10–400 kHz) synchronizing MUX addressing and data output; rising edge latches DIN, falling edge clocks DO. |
| 4 (CS) | Chip Select | Active-low enable; must remain low for entire conversion cycle (~32 μs); high state resets internal registers. |
| 5 (DOUT) | Data Output | Tri-state serial output; drives MSB-first 8-bit result after MUX settling; high-impedance when CS high or during addressing. |
| 6 (IN0) | Analog Input 0 | Channel 0 input terminal; configurable as single-ended (+) or differential (+) with IN1. |
| 7 (IN1) | Analog Input 1 | Channel 1 input terminal; configurable as single-ended (+) or differential (−) with IN0. |
| 8 (IN2) | Analog Input 2 | Channel 2 input terminal; configurable as single-ended (+) or differential (+) with IN3. |
| 9 (IN3) | Analog Input 3 | Channel 3 input terminal; configurable as single-ended (+) or differential (−) with IN2. |
| 10 (VREF) | Reference Voltage Input | Defines full-scale span (0 to VREF); accepts 1.3–5.9 kΩ source impedance; may be tied to VCC. |
| 11 (AGND) | Analog Ground | Return for analog inputs and reference; separate from DGND in layout-critical applications. |
| 12 (DGND) | Digital Ground | Return for digital I/O and supply decoupling; recommended to tie to AGND at single point near device. |
| 13 (V+) | Optional High-Voltage Supply | Alternate supply input (6.3–8.5 V); powers internal shunt regulator feeding VCC; requires series current-limiting resistor. |
| 14 (COM) | Common Input Reference | Internally connected to AGND; serves as pseudo-differential "−" reference for all channels in single-supply biasing schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable 4-channel multiplexer | Per-conversion selection of single-ended or differential input mode for any channel pair, enabling mixed-signal acquisition without hardware reconfiguration. |
| MICROWIRE-compatible serial interface | Direct connection to COPS-family processors or standard shift registers; eliminates parallel bus overhead and reduces PCB trace count. |
| Ratiometric or absolute reference operation | VREF pin accepts system supply (for ratiometric stability) or precision reference (for absolute accuracy), supporting both transducer and calibrated measurement use cases. |
| No zero or full-scale adjustment required | Factory-trimmed transfer function ensures ±1 LSB total unadjusted error across temperature; simplifies production calibration and field maintenance. |
| Low-power 5 V operation | 15 mW typical dissipation at 5 V enables integration into space- and thermal-constrained embedded nodes without active cooling. |
Applications
| Industrial Sensor Monitoring | Embedded Microcontroller Data Acquisition |
|---|---|
|
Use Scenario: Continuous voltage-level sampling from multiple RTD, thermistor, or pressure transducer outputs in factory-floor PLC modules. IC Role / Device Role / Timing Role: ADC0834CCWM/NOPB acts as the front-end A/D converter, digitizing four analog sensor signals sequentially via its software-selectable multiplexer and delivering results over a 3-wire serial link. Use Value: Eliminates need for external multiplexer drivers or parallel ADC interfaces, reducing BOM cost and board area while maintaining 8-bit resolution for process control thresholds. |
Use Scenario: Battery-powered environmental sensor node collecting temperature, humidity, light, and CO₂ analog outputs. IC Role / Device Role / Timing Role: ADC0834CCWM/NOPB provides low-quiescent-current analog digitization with minimal MCU GPIO usage-only CS, CLK, and shared DIN/DOUT lines required. Use Value: Enables long-life operation (<1 mA average supply current) and compact PCB layout due to SOIC-14 footprint and serial interface efficiency. |
| Motor Control Feedback Sensing | Test Equipment Signal Conditioning |
|
Use Scenario: Sampling phase currents and DC bus voltage in BLDC motor drives for closed-loop commutation and overcurrent protection. IC Role / Device Role / Timing Role: ADC0834CCWM/NOPB performs differential measurements across shunt resistors (IN0–IN1, IN2–IN3) to reject common-mode noise from PWM switching. Use Value: Achieves >60 dB common-mode rejection at 20 kHz switching frequencies without external instrumentation amplifiers, lowering component count and cost. |
Use Scenario: Modular benchtop instrument module acquiring analog waveforms from multiple test points in educational or service equipment. IC Role / Device Role / Timing Role: ADC0834CCWM/NOPB serves as a general-purpose serial ADC stage, accepting user-selected inputs via front-panel switches mapped to its 4-channel MUX. Use Value: Supports flexible input routing and rapid firmware-based channel reassignment, accelerating prototype iteration and reducing hardware variants. |
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 |
|---|---|---|---|
| ADC0834BCN/NOPB | Higher-grade BC grade: ±½ LSB total unadjusted error vs. ±1 LSB for CC grade; wider operating temperature (−40°C to +85°C). | Suitable for extended-temperature industrial or automotive under-hood environments where CCWM's 0°C to +70°C range is insufficient. | Select ADC0834BCN/NOPB when tighter accuracy and broader temperature tolerance are required; otherwise ADC0834CCWM/NOPB offers optimal cost/performance for commercial applications. |
| ADS7822U | 12-bit resolution, SPI interface, 2.7–5.25 V supply, 2.5 μs conversion time; no integrated MUX; requires external analog switching. | Better suited for high-precision, low-latency single-channel applications where 8-bit resolution and built-in MUX are unnecessary. | Choose ADS7822U only when resolution >8 bits and speed >300 kSPS are mandatory; ADC0834CCWM/NOPB remains preferred for multi-channel, cost-sensitive, 8-bit systems with minimal external components. |
Compared with ADC0834BCN/NOPB, ADC0834CCWM/NOPB trades ±½ LSB accuracy and −40°C capability for lower unit cost and sufficient performance in commercial-grade instrumentation. Against ADS7822U, it provides integrated 4-channel MUX and simpler interface at the expense of resolution and speed-making it more appropriate for resource-constrained microcontroller systems requiring direct multi-sensor digitization.
Availability
ADC0834CCWM/NOPB is available at Aetrix Electronics and suitable for industrial sensor monitoring, embedded microcontroller data acquisition, motor control feedback sensing, and test equipment signal conditioning requiring stable component supply and long-term manufacturing continuity.
Supply support for ADC0834CCWM/NOPB 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 experience in precision data converters and industrial-grade IC design.
The ADC083x-N family-including ADC0834CCWM/NOPB-is designed for cost-effective, low-pin-count serial analog digitization in resource-limited embedded systems, emphasizing ease of microcontroller integration, minimal external components, and robust operation across commercial temperature ranges.
FAQ
What is the maximum clock frequency supported by ADC0834CCWM/NOPB?
The ADC0834CCWM/NOPB supports a maximum clock frequency of 400 kHz, as specified in its AC characteristics table. At this rate, conversion time remains 32 μs (8 clock cycles), enabling up to ~31.25 kSPS aggregate throughput. Operation above 400 kHz risks timing violations and incorrect data output, particularly in the DO setup/hold window relative to CLK falling edges.
Does ADC0834CCWM/NOPB require external zero or full-scale calibration?
No, ADC0834CCWM/NOPB does not require external zero or full-scale calibration. Its total unadjusted error is guaranteed at ±1 LSB maximum across temperature, and the device is factory trimmed to eliminate the need for user adjustments-simplifying production test and field deployment.
Can ADC0834CCWM/NOPB operate with a reference voltage lower than 5 V?
Yes, ADC0834CCWM/NOPB can operate with VREF as low as 1.3 kΩ-source-compatible voltages (minimum tested resistance), enabling full 8-bit resolution over reduced spans such as 0–2.5 V. However, LSB size scales linearly (e.g., 9.8 mV/LSB at 2.5 V), increasing sensitivity to noise and source impedance errors.
Is the SOIC-14 package of ADC0834CCWM/NOPB lead-free and RoHS compliant?
Yes, the /NOPB suffix in ADC0834CCWM/NOPB explicitly denotes lead-free (Pb-free) and RoHS-compliant construction. The device meets EU Directive 2011/65/EU requirements and is compatible with standard lead-free reflow profiles per JEDEC J-STD-020.
How does the COM pin function in ADC0834CCWM/NOPB?
In ADC0834CCWM/NOPB, the COM pin is internally connected to AGND and serves as the common reference for pseudo-differential operation. When enabled, it allows any analog input (IN0–IN3) to be measured differentially against this fixed reference-useful for single-supply systems where sensors are biased above ground.
ADC0834CCWM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 31.25k
- Number of Inputs:
- 2, 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:
- 4.5V ~ 6.3V
- Voltage - Supply, Digital:
- 4.5V ~ 6.3V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 14-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC0834CCWM/NOPB FAQ
1.How can I place an order for ADC0834CCWM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC0834CCWM/NOPB 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 ADC0834CCWM/NOPB reliable?
The price and inventory of ADC0834CCWM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC0834CCWM/NOPB is usually 5 days.
3.What payment methods are accepted for ADC0834CCWM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC0834CCWM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC0834CCWM/NOPB?
ADC0834CCWM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC0834CCWM/NOPB 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 ADC0834CCWM/NOPB?
For technical support, including ADC0834CCWM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC0834CCWM/NOPB requirements.
6.How does Aetrix verify that ADC0834CCWM/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC0834CCWM/NOPB 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 ADC0834CCWM/NOPB meets industry standards.
7.What is the process for return or replacement of ADC0834CCWM/NOPB?
All ADC0834CCWM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC0834CCWM/NOPB, 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 ADC0834CCWM/NOPB part is unused and in its original packaging.
Return procedure for ADC0834CCWM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADC0834CCWM/NOPB Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
