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Texas Instruments ADC0834CCN/NOPB
- Part No.:
- ADC0834CCN/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
ADC0834CCN/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
ADC0834CCN/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, ±1 LSB total unadjusted error, 32 μs conversion time, and 5 VDC single-supply operation - used in embedded sensor interface circuits for industrial monitoring and data acquisition systems.
For engineers reviewing the ADC0834CCN/NOPB datasheet, ADC0834CCN/NOPB pinout, ADC0834CCN/NOPB application, or ADC0834CCN/NOPB equivalent, key selection considerations include its 4-channel multiplexer flexibility, ratiometric or fixed-reference operation, TI MICROWIRE-compatible serial interface, and PDIP-14 package compatibility with legacy board layouts.
Technical Context
The ADC0834CCN/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 assignment per channel pair (e.g., CH0/CH1 as ±).
Conversion is initiated by CS low, followed by a start bit and 3-bit MUX address on DI; DO outputs MSB-first serial data synchronized to CLK falling edges. The internal SAR status line asserts high during conversion, and the device operates with no zero or full-scale trim required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - delivers 256 discrete output codes over full-scale input range. |
| Total Unadjusted Error | ±1 LSB - includes offset, full-scale, linearity, and multiplexer errors; ensures monotonicity without calibration. |
| Conversion Time | 32 μs - fixed duration at 250 kHz clock; enables up to ~31.25 kSPS throughput in burst mode. |
| Supply Voltage | 4.5 VDC to 6.3 VDC - supports direct connection to standard 5 V logic rails with margin for ripple. |
| Input Range | 0 V to 5 V with single 5 V supply - ratiometric operation allows VIN span tracking VREF, simplifying sensor interfacing. |
| Power Dissipation | 15 mW typical - enables use in thermally constrained or battery-backed systems without active cooling. |
| Reference Input | 3.5 kΩ typical impedance - requires stable voltage source or direct tie to VCC; supports reduced-span encoding down to sub-1 VREF. |
Pinout & Package
ADC0834CCN/NOPB is housed in a 14-pin plastic dual in-line package (PDIP) with 0.3-inch width, compatible with through-hole PCB assembly and socket-based prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VREF) | Reference voltage input | Sets full-scale analog input span; tied to VCC for ratiometric operation or external precision reference for absolute accuracy. |
| 2 (CH0) | Analog input channel 0 | Configurable as single-ended (+) or differential (+) with CH1; accepts 0 V to VCC + 0.05 V. |
| 3 (CH1) | Analog input channel 1 | Paired with CH0 for differential mode; also supports single-ended operation when CH0 is unused. |
| 4 (CH2) | Analog input channel 2 | Single-ended or differential (+) with CH3; shares same MUX addressing logic as CH0–CH1 pair. |
| 5 (CH3) | Analog input channel 3 | Differential (−) partner for CH2; enables true differential measurement across two independent signal sources. |
| 6 (GND) | Analog/digital ground | Common return for analog inputs, reference, and digital I/O; requires star grounding for noise-sensitive applications. |
| 7 (DI) | Serial data input | Accepts start bit and 3-bit MUX address; ignored after start bit detection; supports bidirectional bus sharing with DO. |
| 8 (CLK) | Serial clock input | Drives internal timing; 10 kHz to 400 kHz range; rising edge latches DI, falling edge clocks DO data. |
| 9 (CS) | Chip select input | Active-low enable; must remain low for entire conversion cycle (~32 μs); initiates MUX address capture and conversion. |
| 10 (DO) | Serial data output | Tri-state output; provides MSB-first 8-bit result; high-impedance when CS high or during MUX settling. |
| 11 (VCC) | Positive supply | Provides power for analog core and digital interface; internally connects to VREF in ratiometric mode. |
| 12 (COM) | Common input reference | Internally connected to GND; serves as pseudo-differential "−" reference for all channels in single-ended mode. |
| 13 (V+) | Optional shunt-regulated supply | Accepts up to 8.5 V; internal zener regulates VCC; requires current-limiting resistor for safe operation. |
| 14 (AGND) | Analog ground | Same node as Pin 6; separation from digital ground not implemented - single ground plane required. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable 4-channel multiplexer | Enables dynamic reconfiguration between single-ended and differential modes per conversion - eliminates need for external analog switches. |
| TI MICROWIRE-compatible serial interface | Directly interfaces with COPS-family microcontrollers and standard shift registers - reduces GPIO count and PCB routing complexity. |
| No zero or full-scale adjustment required | Guarantees ±1 LSB total unadjusted error across temperature - eliminates factory calibration and field trimming steps. |
| Ratiometric or fixed-reference operation | Supports VREF = VCC for sensor systems where input scales with supply, or external reference for precision metrology applications. |
| Differential input common-mode rejection | Reduces 60 Hz noise pickup by sampling "+" and "−" inputs within ½ clock period - effective for transducer signals with shared interference. |
Applications
| Industrial Sensor Interface | Legacy Microcontroller Data Acquisition |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, and humidity sensors in PLC I/O modules using 5 V microcontrollers with limited GPIO. IC Role / Device Role / Timing Role: ADC0834CCN/NOPB acts as the front-end A/D converter, accepting four analog sensor outputs and delivering digitized values via 3-wire serial interface. Use Value: Eliminates need for external level-shifting or multiplexing ICs; 4-channel integration reduces BOM count and layout area in space-constrained DIN-rail enclosures. |
Use Scenario: Retrofitting analog monitoring into older 8-bit MCS-51 or Z80-based control systems lacking integrated ADC peripherals. IC Role / Device Role / Timing Role: ADC0834CCN/NOPB serves as a drop-in serial ADC extension, driven by bit-banged GPIO with minimal firmware changes. Use Value: Enables reuse of existing 5 V board designs without redesigning power or signal routing; PDIP-14 footprint matches legacy socket footprints. |
| Transducer Signal Conditioning | Low-Power Remote Telemetry Node |
|
Use Scenario: Converting differential bridge outputs (e.g., load cells, strain gauges) in weigh scale electronics with minimal external components. IC Role / Device Role / Timing Role: ADC0834CCN/NOPB performs true differential measurement on CH0/CH1 or CH2/CH3 pairs, rejecting common-mode noise from long sensor cables. Use Value: Achieves ±1 LSB accuracy without instrumentation amplifiers or laser-trimmed resistors - lowering system cost and component count. |
Use Scenario: Battery-powered environmental sensor nodes transmitting digitized readings over RS-485 or LoRaWAN links. IC Role / Device Role / Timing Role: ADC0834CCN/NOPB operates at 15 mW and supports intermittent sampling; CS-controlled activation minimizes idle current draw. Use Value: Extends battery life beyond 2 years in periodic-readout configurations; 0 V to 5 V input range accommodates rail-to-rail op-amp outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC0832CCN/NOPB | 2-channel multiplexer; identical resolution, error, and interface; smaller PDIP-8 package. | Limited to dual-sensor systems; lacks CH2/CH3 support; lower pin count reduces routing overhead. | Select when only two analog inputs are needed and board space is critical - no change to firmware logic except MUX address length. |
| ADS7822U | 8-bit, 200 kSPS, SPI interface, SO-8 package; higher speed but requires external reference and separate power domains. | Better suited for high-throughput applications; lacks built-in multiplexer and ratiometric mode. | Choose for faster sampling where system already uses SPI and has dedicated analog reference - not a drop-in replacement due to different protocol and pinout. |
Compared with ADC0832CCN/NOPB, ADC0834CCN/NOPB adds two extra analog channels without increasing supply current or interface complexity; versus ADS7822U, it trades speed for integrated multiplexing, ratiometric operation, and simpler 3-wire control - making it optimal for cost-sensitive, multi-sensor, 5 V embedded systems.
Availability
ADC0834CCN/NOPB is available at Aetrix Electronics and suitable for industrial sensor interface, legacy microcontroller data acquisition, and transducer signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for ADC0834CCN/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 over 50 years of innovation in data conversion and industrial interface solutions.
The ADC083x-N series was designed for cost-effective, easy-to-integrate analog-to-digital conversion in resource-constrained embedded systems - emphasizing simplicity, minimal external components, and compatibility with legacy 5 V logic families.
FAQ
What is the maximum clock frequency supported by ADC0834CCN/NOPB?
The ADC0834CCN/NOPB supports a maximum clock frequency of 400 kHz, enabling minimum conversion time of 32 μs. At this rate, the device achieves up to ~31.25 kSPS in continuous operation. Operation below 10 kHz is not recommended due to increased susceptibility to noise and timing uncertainty in the successive approximation process. The ADC0834CCN/NOPB datasheet specifies 250 kHz as the nominal clock for guaranteed ±1 LSB performance across temperature.
Does ADC0834CCN/NOPB require external zero or full-scale calibration?
No, ADC0834CCN/NOPB does not require external zero or full-scale calibration. Its design guarantees ±1 LSB total unadjusted error across the full operating temperature range (0°C to +70°C for CCN grade), including offset, full-scale, linearity, and multiplexer errors. This eliminates factory trim steps and field recalibration - a key advantage for high-volume manufacturing and maintenance-free deployments.
Can ADC0834CCN/NOPB operate with a reference voltage lower than 5 V?
Yes, ADC0834CCN/NOPB supports reference voltages as low as 1.3 kΩ minimum input resistance allows - typically down to ~1 V, though datasheet characterization begins at 3.5 V. Lower VREF increases LSB size (e.g., 1 LSB = VREF/256), improving resolution for small-signal transducers but reducing noise immunity. System-level error sources like source impedance and leakage current become more critical below 2.5 V.
How is differential mode configured on ADC0834CCN/NOPB?
Differential mode on ADC0834CCN/NOPB is configured via 3-bit MUX address shifted into the DI pin after the start bit: "100" selects CH0(+)–CH1(−), "101" selects CH0(−)–CH1(+), "110" selects CH2(+)–CH3(−), and "111" selects CH2(−)–CH3(+). The polarity assignment determines sign handling - the converter outputs 00000000 for negative differential inputs. No external components are needed to enable this mode.
Is ADC0834CCN/NOPB pin-compatible with other devices in the ADC083x family?
ADC0834CCN/NOPB is not pin-compatible with ADC0831-N (PDIP-8), ADC0832-N (PDIP-8), or ADC0838-N (PDIP-20/PLCC-20). It uses a unique 14-pin PDIP package (NFF suffix) with dedicated CH2/CH3 pins and COM tied to GND. While functional behavior is consistent across the family, PCB layout must be specific to ADC0834CCN/NOPB's 14-pin footprint and pin assignments.
ADC0834CCN/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 14-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
ADC0834CCN/NOPB FAQ
1.How can I place an order for ADC0834CCN/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC0834CCN/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 ADC0834CCN/NOPB reliable?
The price and inventory of ADC0834CCN/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC0834CCN/NOPB is usually 5 days.
3.What payment methods are accepted for ADC0834CCN/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC0834CCN/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC0834CCN/NOPB?
ADC0834CCN/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC0834CCN/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 ADC0834CCN/NOPB?
For technical support, including ADC0834CCN/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC0834CCN/NOPB requirements.
6.How does Aetrix verify that ADC0834CCN/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC0834CCN/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 ADC0834CCN/NOPB meets industry standards.
7.What is the process for return or replacement of ADC0834CCN/NOPB?
All ADC0834CCN/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC0834CCN/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 ADC0834CCN/NOPB part is unused and in its original packaging.
Return procedure for ADC0834CCN/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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