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Texas Instruments ADC0809CCV/NOPB
- Part No.:
- ADC0809CCV/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
ADC0809CCV/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
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Product details
Overview
ADC0809CCV/NOPB from Texas Instruments is an 8-bit monolithic CMOS analog-to-digital converter with integrated 8-channel single-ended multiplexer, successive approximation architecture, and microprocessor-compatible control logic. It operates ratiometrically or with 5 VDC supply, delivers ±1 LSB total unadjusted error over 0°C to +70°C, supports 640 kHz clock input, and outputs TTL-level data. It is used in industrial sensor data acquisition systems interfacing potentiometers, thermistor bridges, or pressure transducers.
For engineers reviewing the ADC0809CCV/NOPB datasheet, ADC0809CCV/NOPB pinout, ADC0809CCV/NOPB application, or ADC0809CCV/NOPB equivalent, key selection criteria include its 8-channel multiplexing capability, no zero/full-scale adjustment requirement, 100 μs conversion time, 5 V single-supply operation, and PLCC-28 package compatibility with legacy 8085/8080 microprocessor buses.
Technical Context
The ADC0809CCV/NOPB implements a chopper-stabilized comparator paired with a 256R resistor ladder network and successive approximation register (SAR), ensuring monotonic transfer characteristics and minimal temperature drift. Its address-latched 3-bit channel select logic (ADD A/B/C) enables direct access to any of eight analog inputs without external decoding.
Conversion is initiated by a falling edge on START, synchronized to an externally supplied 10–1280 kHz clock; end-of-conversion is signaled via EOC output. The device features TRI-STATE data outputs, latched address inputs, and ratiometric reference flexibility-VREF(+) tied to VCC and VREF(−) to GND yields 0 V to VCC input range with no external reference needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - delivers 256 discrete digital codes for analog input quantization |
| Total Unadjusted Error | ±1 LSB (0°C to +70°C) - eliminates need for factory calibration or trim circuitry |
| Conversion Time | 100 μs at 640 kHz clock - enables up to 10 kSPS sampling rate in continuous mode |
| Supply Voltage Range | 4.5 V to 6.0 V - compatible with standard 5 V logic rails and tolerant of minor rail variation |
| Analog Input Range | 0 V to VCC - supports direct connection of ratiometric transducers without level-shifting |
| Digital Output Interface | TTL-compatible TRI-STATE outputs - allows direct bus sharing with 8085, Z-80, or 6800 microprocessors |
| Power Consumption | 15 mW typical at 5 V - suitable for low-power embedded data loggers and portable instrumentation |
Pinout & Package
ADC0809CCV/NOPB is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC-FN0028A) package with J-lead configuration, 0.050" pitch, and 0.429" × 0.429" body size. The package is lead-free (NOPB suffix), RoHS-compliant, and rated for −40°C to +85°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0–IN7 | Analog input channels | Single-ended inputs selectable via ADD A/B/C; each internally protected by clamping diodes |
| ADD A, ADD B, ADD C | Multiplexer address inputs | Latched on rising edge of ALE; define which of 8 channels connects to internal SAR |
| ALE | Address Latch Enable | Transfers ADD A/B/C state into internal decoder; initiates channel selection |
| START | Conversion start trigger | Falling edge initiates new 8-cycle SAR conversion; interrupts ongoing conversion |
| EOC | End-of-Conversion flag | Open-drain output goes low during conversion, high when result is ready in output latch |
| OE | Output Enable | Active-high signal enabling TRI-STATE data bus drivers (D0–D7) for microprocessor read |
| CLOCK | External timing source | Drives internal logic and SAR; frequency directly affects conversion time (tc = 8 × tCLK) |
| VREF(+), VREF(−) | Reference voltage terminals | Define full-scale range; ratiometric operation achieved by tying VREF(+) to VCC and VREF(−) to GND |
| VCC, GND | Power supply pins | Single 5 V supply powers analog core, digital logic, and internal reference ladder |
| D0–D7 | Digital output data bus | TRI-STATE TTL outputs latched after conversion; driven only when OE is high |
Key Features
| Feature | Design Value |
|---|---|
| 8-channel analog multiplexer with address latch | Reduces external component count by integrating channel selection and sample gating in one IC |
| 256R ladder network with chopper-stabilized comparator | Guarantees monotonicity and <±1 LSB error across temperature without trimming |
| No zero or full-scale adjustment required | Eliminates manual calibration steps and associated potentiometers in production test flow |
| Ratiometric operation support | Enables direct interface to potentiometers and bridge sensors without precision voltage references |
| Microprocessor-compatible control signals | Supports synchronous read/write handshaking with 8085, Z-80, 6800, and SC/MP buses using START, OE, ALE, EOC |
Applications
| Industrial Process Monitoring | Automotive Sensor Interface |
|---|---|
Use Scenario: Continuous monitoring of temperature, pressure, and fluid level sensors in PLC-based control cabinets. IC Role / Device Role / Timing Role: Central A/D converter acquiring multiplexed analog signals from 8 independent 4–20 mA transducer outputs. Use Value: Enables cost-effective consolidation of sensor inputs onto a single 8-bit data bus without external MUX or reference ICs. | Use Scenario: Reading position feedback from throttle, pedal, and suspension potentiometers in engine control units. IC Role / Device Role / Timing Role: Ratiometric ADC converting variable-resistance sensor outputs directly referenced to vehicle battery voltage. Use Value: Eliminates need for isolated precision references, reducing BOM cost and improving fault tolerance in noisy 12 V environments. |
| Legacy Microprocessor Data Acquisition | Consumer Appliance Control |
Use Scenario: Retrofitting analog sensing into existing 8085-based laboratory instruments or educational kits. IC Role / Device Role / Timing Role: Standalone ADC interfaced via MEMR/MEMW strobes and INTR handshake using external address latches. Use Value: Maintains full software compatibility with vintage firmware while adding multi-channel capability without bus arbitration logic. | Use Scenario: Digitizing user-adjustable settings (oven temperature, washing cycle time) via front-panel potentiometers. IC Role / Device Role / Timing Role: Low-speed, low-resolution ADC providing human-interface feedback in white-goods microcontrollers. Use Value: Provides sufficient resolution (8-bit = ~0.4% FS) for non-critical setpoint entry with minimal power draw (<15 mW). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit multiplexed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC0808CCV/NOPB | Identical pinout and architecture; specified for −40°C to +85°C with ±½ LSB error at 25°C and ±¾ LSB over full range | Better accuracy at room temperature; wider industrial temperature grade | Select ADC0808CCV/NOPB when system operates across −40°C to +85°C and requires tighter initial accuracy |
| MM74C949-1 | Second-source equivalent per TI documentation; same electrical specs and timing but different manufacturer marking and packaging | No functional or layout differences; identical replacement in legacy designs originally specifying MM74C949-1 | Choose MM74C949-1 only if sourcing from distributors carrying that part number and requiring exact second-source compliance |
Compared with ADC0809CCV/NOPB, ADC0808CCV/NOPB offers improved accuracy over extended temperature but shares identical timing, interface, and package; MM74C949-1 provides drop-in form-fit-function equivalence with no design changes required.
Availability
ADC0809CCV/NOPB is available at Aetrix Electronics and suitable for industrial process monitoring, automotive sensor interface, legacy microprocessor data acquisition, and consumer appliance control requiring stable component supply and long-term obsolescence management.
Supply support for ADC0809CCV/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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and silicon technology for industrial, automotive, and communications markets.
ADC0809CCV/NOPB belongs to TI's legacy data acquisition product line, designed specifically for cost-sensitive, microprocessor-integrated systems requiring multi-channel 8-bit digitization without external calibration or precision references.
FAQ
What is the operating temperature range for ADC0809CCV/NOPB?
The ADC0809CCV/NOPB is specified for operation from 0°C to +70°C. This commercial-grade temperature range is documented in the Electrical Characteristics table under "Total Unadjusted Error" for ADC0809, where ±1 LSB is guaranteed across that interval. The device's PLCC package and internal design support reliable performance within this band without derating.
Does ADC0809CCV/NOPB require external zero or full-scale calibration?
No, ADC0809CCV/NOPB does not require external zero or full-scale calibration. Its architecture-including the 256R ladder network, chopper-stabilized comparator, and matched internal resistors-ensures ±1 LSB total unadjusted error across temperature. The datasheet explicitly states "No Zero or Full-Scale Adjust Required" as a key feature, eliminating trim potentiometers and calibration routines in production.
Can ADC0809CCV/NOPB operate with a 3.3 V supply?
No, ADC0809CCV/NOPB cannot operate reliably with a 3.3 V supply. Its Absolute Maximum Ratings specify minimum VCC of 4.5 VDC, and Electrical Characteristics are guaranteed only between 4.5 V and 6.0 V. At 3.3 V, the internal resistor ladder, comparator bias, and TTL output drive will fall outside specification, resulting in incorrect codes or non-functional TRI-STATE outputs.
How is the analog input range defined for ADC0809CCV/NOPB?
The analog input range for ADC0809CCV/NOPB is 0 V to VCC when configured ratiometrically-i.e., with VREF(+) tied to VCC and VREF(−) tied to GND. This is confirmed in the "KEY SPECIFICATIONS" section and "APPLICATIONS INFORMATION" subsection "RATIOMETRIC CONVERSION". The input protection diodes allow transient excursions to VCC + 0.1 V, but sustained operation must remain within 0 V to VCC.
What microprocessors is ADC0809CCV/NOPB compatible with?
ADC0809CCV/NOPB is compatible with 8080, 8085, Z-80, SC/MP, and 6800 microprocessors, as verified in Table 2 ("Microprocessor Interface Table") of the datasheet. Its START, OE, ALE, and EOC signals align with standard memory-read/write and interrupt protocols; for example, 8085 systems use RD/WR strobes and INTR, while Z-80 uses RD/WR and INT Mode 0.
ADC0809CCV/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 10k
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 4.5V ~ 6.5V
- Voltage - Supply, Digital:
- 4.5V ~ 6.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC0809CCV/NOPB FAQ
1.How can I place an order for ADC0809CCV/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC0809CCV/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 ADC0809CCV/NOPB reliable?
The price and inventory of ADC0809CCV/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC0809CCV/NOPB is usually 5 days.
3.What payment methods are accepted for ADC0809CCV/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC0809CCV/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC0809CCV/NOPB?
ADC0809CCV/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC0809CCV/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 ADC0809CCV/NOPB?
For technical support, including ADC0809CCV/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC0809CCV/NOPB requirements.
6.How does Aetrix verify that ADC0809CCV/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC0809CCV/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 ADC0809CCV/NOPB meets industry standards.
7.What is the process for return or replacement of ADC0809CCV/NOPB?
All ADC0809CCV/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC0809CCV/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 ADC0809CCV/NOPB part is unused and in its original packaging.
Return procedure for ADC0809CCV/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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