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Texas Instruments ADC0808CCV/NOPB
- Part No.:
- ADC0808CCV/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
ADC0808CCV/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,532
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Product details
Overview
ADC0808CCV/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 from a single 5 VDC supply, delivers ±½ LSB total unadjusted error at 25°C, and completes conversion in 100 μs with a 640 kHz clock. It is used in embedded data acquisition systems requiring ratiometric measurement of potentiometers, strain gauges, or temperature sensors.
For engineers reviewing the ADC0808CCV/NOPB datasheet, ADC0808CCV/NOPB pinout, ADC0808CCV/NOPB application, or ADC0808CCV/NOPB equivalent, key selection criteria include its 8-channel multiplexed analog input capability, TTL-compatible TRI-STATE outputs, no zero/full-scale adjustment requirement, and operation across −40°C to +85°C industrial temperature range.
Technical Context
The ADC0808CCV/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 latch enable (ALE) and decoded channel select logic allow direct interface to 8085, Z-80, or 6800 microprocessors without external latches.
Conversion timing is synchronized to an external 10–1280 kHz clock; the end-of-conversion (EOC) signal asserts after 90–116 μs, and data outputs enter TRI-STATE mode when output enable (OE) is low. Analog inputs accept 0 V to VCC range, and reference voltages are internally derived from VCC and GND, supporting both ratiometric and ground-referenced configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - provides 256 discrete digital codes for analog input quantization. |
| Total Unadjusted Error | ±½ LSB at 25°C - eliminates need for factory calibration or field trimming. |
| Conversion Time | 100 μs at 640 kHz clock - enables up to 10 kSPS sampling rate in continuous mode. |
| Supply Voltage Range | 4.5 VDC to 6.0 VDC - compatible with standard 5 V logic rails and tolerant of rail variation. |
| Analog Input Range | 0 V to VCC - supports direct connection of ratiometric transducers without level-shifting circuitry. |
| Digital Output Interface | TTL-compatible TRI-STATE outputs - allows direct bus connection to microprocessor data lines with no buffer required. |
| Power Consumption | 15 mW typical at 5 V - enables use in low-power industrial monitoring nodes. |
Pinout & Package
ADC0808CCV/NOPB is housed in a 28-pin PLCC (Plastic Leaded Chip Carrier) package with J-lead configuration, 0.65 mm lead pitch, and 4.57 mm maximum height per JEDEC MS-018. Pin 1 is marked by a corner chamfer or optional dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0–IN7 | Analog input channels | Single-ended inputs selectable via ADD A/B/C address lines; support 0 V to VCC ratiometric sensing. |
| ADD A, ADD B, ADD C | Multiplexer address inputs | Latched on rising edge of ALE; select one of eight analog channels (IN0–IN7) for conversion. |
| ALE | Address Latch Enable | Positive-edge-triggered latch control for channel address; initiates analog switch tree settling. |
| START | Conversion start trigger | Falling-edge-initiated conversion; resets SAR and begins successive approximation sequence. |
| EOC | End-of-Conversion flag | Open-drain output goes low after conversion completion; used as interrupt or polling signal. |
| OE | Output Enable | Active-high control for TRI-STATE data bus; enables D0–D7 outputs only when asserted. |
| D0–D7 | Digital output data bus | Positive-true, TTL-level outputs; high-impedance when OE is low. |
| CLOCK | External conversion clock | Accepts 10–1280 kHz square wave; determines conversion time and sampling resolution. |
| VREF(+) / VREF(−) | Reference voltage terminals | Define full-scale and zero-scale points; internally tied to VCC and GND in ratiometric mode. |
| VCC, GND | Power supply pins | Single 5 V supply powers analog core, digital logic, and multiplexer; no separate analog/digital rails required. |
Key Features
| Feature | Design Value |
|---|---|
| 256R ladder network | Guarantees monotonic response with no missing codes-critical for closed-loop control stability. |
| Chopper-stabilized comparator | Reduces offset drift and temperature dependence, enabling ±½ LSB accuracy over −40°C to +85°C. |
| Latched address decoding | Eliminates need for external address latches when interfacing with 8085 or Z-80 microprocessors. |
| Ratiometric operation support | Allows direct connection of potentiometers and bridge sensors across VCC–GND without precision reference ICs. |
| No zero or full-scale adjustment | Factory-trimmed architecture removes manual calibration steps during system production and field maintenance. |
Applications
| Industrial Process Monitoring | Automotive Sensor Interface |
|---|---|
Use Scenario: Continuous monitoring of tank level via 4–20 mA loop-connected potentiometer in chemical plant control cabinet. IC Role / Device Role / Timing Role: ADC0808CCV/NOPB digitizes analog position signal, multiplexes multiple sensor inputs, and interfaces directly to PLC CPU via 8-bit data bus. Use Value: Enables cost-effective multi-sensor acquisition using single 5 V rail and eliminates external reference and calibration components. | Use Scenario: Reading throttle position and coolant temperature in legacy engine control unit with Z-80-based architecture. IC Role / Device Role / Timing Role: ADC0808CCV/NOPB serves as primary analog front-end, converting two independent sensor signals under microprocessor command with EOC-interrupt synchronization. Use Value: Provides deterministic 100 μs conversion latency and TTL-compatible outputs that match Z-80 bus timing without glue logic. |
| Consumer Appliance Control | Test & Measurement Equipment |
Use Scenario: Temperature and humidity sensing in smart HVAC thermostat using thermistor and capacitive RH sensor. IC Role / Device Role / Timing Role: ADC0808CCV/NOPB samples dual analog inputs sequentially, leverages internal ratiometric reference for supply-voltage immunity, and outputs to 8051 MCU. Use Value: Reduces BOM count by integrating multiplexer, reference, and converter-no external op-amps or voltage references needed. | Use Scenario: Low-cost benchtop multimeter front-end acquiring DC voltage, resistance, and diode test readings. IC Role / Device Role / Timing Role: ADC0808CCV/NOPB acts as main acquisition engine, switching between voltage divider, current sense, and ohms measurement paths via ADD lines. Use Value: Delivers consistent ±½ LSB linearity across all ranges, enabling 0.4% basic accuracy without post-conversion software correction. |
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 |
|---|---|---|---|
| ADC0809CCV/NOPB | Specified for 0°C to +70°C commercial range; ±1 LSB total unadjusted error over full temp range. | Suitable for non-industrial environments where extended temperature operation is not required. | Select ADC0809CCV/NOPB only if operating ambient stays within 0–70°C and ±1 LSB error is acceptable. |
| MM74C949 | Second-source part with identical pinout and electrical specs per TI documentation; manufactured by ON Semiconductor. | Same functional behavior and PCB layout compatibility; used in legacy designs requiring alternate sourcing. | Choose MM74C949 when dual-sourcing or obsolescence mitigation is required, with no design change needed. |
Compared with ADC0808CCV/NOPB, ADC0809CCV/NOPB trades industrial temperature range and tighter error spec for lower cost in commercial settings, while MM74C949 offers identical performance with alternate supply chain assurance-neither is pin-compatible with newer SPI/I²C ADCs.
Availability
ADC0808CCV/NOPB is available at Aetrix Electronics and suitable for industrial process monitoring, automotive sensor interface, and consumer appliance control requiring stable component supply across long-lifecycle programs.
Supply support for ADC0808CCV/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, delivering analog, embedded processing, and connectivity solutions since 1930.
The ADC0808CCV/NOPB belongs to TI's legacy data acquisition family, designed specifically for cost-sensitive, microprocessor-based systems needing integrated multiplexing, conversion, and TTL interfacing in a single 5 V device.
FAQ
What is the operating temperature range of the ADC0808CCV/NOPB?
The ADC0808CCV/NOPB is rated for operation from −40°C to +85°C, meeting industrial temperature requirements. This range is confirmed in the Electrical Characteristics table under Operating Conditions, where TMIN ≤ TA ≤ TMAX is specified as −40°C to +85°C. The device maintains ±½ LSB total unadjusted error at 25°C and ±¾ LSB across the full industrial range.
Does the ADC0808CCV/NOPB require external zero or full-scale calibration?
No, the ADC0808CCV/NOPB does not require external zero or full-scale adjustment. Its monolithic design incorporates factory-trimmed resistor ladder and chopper-stabilized comparator, resulting in guaranteed ±½ LSB total unadjusted error at 25°C. This eliminates calibration circuitry and reduces production test time for systems using ADC0808CCV/NOPB.
Can the ADC0808CCV/NOPB interface directly with an 8085 microprocessor?
Yes, the ADC0808CCV/NOPB interfaces directly with the 8085 microprocessor using its latched address inputs (ADD A/B/C), ALE, START, OE, and EOC signals. Table 2 in the datasheet explicitly lists 8085 compatibility, confirming RD/WR control and INTR interrupt routing. No external address latches or bus transceivers are needed due to built-in address latching on ALE's rising edge.
What is the maximum clock frequency supported by the ADC0808CCV/NOPB?
The ADC0808CCV/NOPB supports a clock frequency range of 10 kHz to 1280 kHz. At the maximum 1280 kHz, conversion time reduces to 90 μs (minimum), while at 640 kHz it is 100 μs typical. Operation above 1280 kHz is not characterized and may degrade accuracy or cause timing violations per the Timing Specifications table.
Is the ADC0808CCV/NOPB still in active production?
No, the ADC0808CCV/NOPB is marked as "Obsolete" in TI's official packaging addendum. However, Aetrix Electronics maintains verified inventory with full traceability and supports ongoing production programs through lifecycle management, including last-time buy coordination and cross-reference guidance for legacy system sustainment.
ADC0808CCV/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:
- -
ADC0808CCV/NOPB FAQ
1.How can I place an order for ADC0808CCV/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC0808CCV/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 ADC0808CCV/NOPB reliable?
The price and inventory of ADC0808CCV/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC0808CCV/NOPB is usually 5 days.
3.What payment methods are accepted for ADC0808CCV/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC0808CCV/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC0808CCV/NOPB?
ADC0808CCV/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC0808CCV/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 ADC0808CCV/NOPB?
For technical support, including ADC0808CCV/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC0808CCV/NOPB requirements.
6.How does Aetrix verify that ADC0808CCV/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC0808CCV/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 ADC0808CCV/NOPB meets industry standards.
7.What is the process for return or replacement of ADC0808CCV/NOPB?
All ADC0808CCV/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC0808CCV/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 ADC0808CCV/NOPB part is unused and in its original packaging.
Return procedure for ADC0808CCV/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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