ADC08062CIWM/NOPB - 8-Bit 1.5MSPS 2-Input ADC | Texas Instruments
MPN: ADC08062CIWM/NOPB ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.21 | $521.00 |
| 500 | $4.69 | $2,345.00 |
| 1,000 | $4.15 | $4,150.00 |
ADC08062CIWM/NOPB Overview
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes. Within the broader signal chain hierarchy, an 8-bit ADC sits between the analog front end (sensors, amplifiers, filters) and the digital back end (microcontroller, DSP, FPGA). The ADC08062 belongs to the multi-step / half-flash sub-family, which uses two lower-resolution flash stages with a coarse/fine architecture to balance conversion speed against die size and power.
Key features of the ADC08062CIWM/NOPB include 1.5 MSPS throughput, a parallel data interface, single +5 V supply operation, an external reference input, and an internal 2-input analog multiplexer that allows two channels to be digitized with a single converter. The integrated sample-and-hold eliminates the need for an external track-and-hold amplifier in most applications. Operating temperature range is -40 C to +85 C, suitable for industrial environments.
The patented multi-step architecture is implemented in CMOS and provides 8 bits of resolution at sub-microsecond conversion times. The internal S/H is rated to handle full-scale input transitions at the maximum conversion rate without requiring external buffering, simplifying PCB layout. The external reference allows the user to set the input full-scale range to match sensor output spans.
Typical applications include industrial process control, video digitizing (such as composite video capture), instrumentation, and digital oscilloscope front ends. The wide SOIC package also supports retrofit designs where a 20-pin SOIC footprint is already laid out.
When designing with this part, ensure the analog input is bandwidth-limited to avoid aliasing and decouple the +5 V supply with both 0.1 uF and 10 uF capacitors placed as close to the AVDD pin as possible. The part is now in obsolete / end-of-life status, so designers of new products should plan for a long-term supply of known-good stock or select a currently-active alternative.
This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet, providing actionable information for engineers sourcing or replacing this legacy TI/NSC ADC.
Drop-in alternatives for ADC08062CIWM/NOPB — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADC08062CIWM/NOPB (same form factor and footprint) — differing in Number of Input Channels, Resolution.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC08061CIWM/NOPB
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADC08060CIWM/NOPB
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADC08062CIWM/NOPB Maximum Ratings & Electrical Characteristics
| Resolution | 8 bits |
| Sampling Rate | 1.5 MSPS |
| Number of Input Channels | 2 (single-ended) |
| Conversion Time | 500 ns (typical) |
| Architecture | Multi-step flash (half-flash) with internal S/H |
| Data Interface | Parallel |
| Input Type | Single-ended |
| Reference Type | External |
| Power Dissipation | 125 mW (typical) |
| Operating Temperature | -40 C to +85 C |
| Package / Case | 20-SOIC (0.295 inch / 7.50 mm width) |
| Mounting Type | Surface Mount |
| Packaging | Tube |
| Lifecycle Status | Obsolete (EOL) |
| RoHS Status | Compliant (NOPB suffix indicates lead-free) |
| Manufacturer | Texas Instruments (formerly National Semiconductor) |
ADC08062CIWM/NOPB Pin Configuration
| Pin 1 | DVDD — Digital +5 V supply |
| Pin 2 | AIN1 — Analog input channel 1 (single-ended) |
| Pin 3 | AGND — Analog ground |
| Pin 4 | DB0 — Data output bit 0 (LSB) |
| Pin 5 | DB1 — Data output bit 1 |
| Pin 6 | DB2 — Data output bit 2 |
| Pin 7 | DB3 — Data output bit 3 |
| Pin 8 | DB4 — Data output bit 4 |
| Pin 9 | DB5 — Data output bit 5 |
| Pin 10 | DB6 — Data output bit 6 |
| Pin 11 | DB7 — Data output bit 7 (MSB) |
| Pin 12 | CONVST — Conversion start input |
| Pin 13 | RD — Read strobe |
| Pin 14 | CS — Chip select (active low) |
| Pin 15 | INT/EXT — Internal/external clock select |
| Pin 16 | DGND — Digital ground |
| Pin 17 | CLK — Clock input/output |
| Pin 18 | AIN2 — Analog input channel 2 (single-ended) |
| Pin 19 | VREF — External reference voltage input |
| Pin 20 | AVDD — Analog +5 V supply |
Typical Applications
ADC08062CIWM/NOPB is suitable for 6 applications: Industrial Process Control, Composite Video Digitizing, Digital Oscilloscope Front End, Portable Instrumentation, Radar and Sonar Signal Sampling, Retrofit Replacement for Legacy Boards.
Industrial Process Control
The ADC08062CIWM/NOPB fits industrial process-control analog front ends where 8-bit resolution and 1.5 MSPS throughput are sufficient for transducer signal digitization. Its parallel data interface connects directly to legacy microcontrollers and PLC backplanes, and the 20-SOIC wide package is mechanically robust for vibration-prone factory environments. The integrated 2-input multiplexer allows two sensor channels to share one converter, reducing BOM count. The -40 C to +85 C industrial temperature range covers most factory-floor thermal envelopes.
Recommended
Composite Video Digitizing
The ADC08062CIWM/NOPB is well-matched to monochrome or low-resolution composite video digitization thanks to its 1.5 MSPS sample rate, integrated sample-and-hold, and parallel 8-bit output. The parallel interface feeds directly into an FPGA video pipeline without requiring a high-speed serial deserializer. The internal S/H cleanly captures full-amplitude video transitions, and the wide SOIC package simplifies thermal management when running at continuous-conversion mode. Pre-filter the video input to under 5 MHz to satisfy the Nyquist criterion at this sample rate.
Recommended
Digital Oscilloscope Front End
The ADC08062CIWM/NOPB serves as the analog front end of low-bandwidth digital oscilloscopes and bench-top data loggers, where 1.5 MSPS and 8-bit resolution are adequate for sub-MHz signal analysis. Its multi-step flash architecture delivers sub-microsecond conversion latency, which is essential for trigger-position-accurate waveform capture. The parallel output port supports DMA-style transfers into acquisition memory, and the external reference allows the input range to be tailored to common oscilloscope probe attenuation factors (1x, 10x).
Recommended
Portable Instrumentation
Battery-powered portable instrumentation benefits from the ADC08062CIWM/NOPB's modest 125 mW power dissipation and small 20-SOIC footprint. The 2-input internal multiplexer is useful for handheld multimeters that must read voltage and current with a single converter. The parallel interface minimizes microcontroller firmware overhead because samples can be latched directly into a GPIO port without bit-banging serial protocols. Designers should still gate the converter with a power-saving signal between conversions to extend battery life on field instruments.
Recommended
Radar and Sonar Signal Sampling
The ADC08062CIWM/NOPB has historically been used in low-frequency sonar and short-range ultrasonic ranging modules where 8-bit amplitude resolution at sub-MHz bandwidth is sufficient. The internal sample-and-hold tracks fast return-echo envelopes without an external track amplifier. The parallel data interface can drive DSP pre-processors directly for FFT-based distance calculation. The industrial -40 C to +85 C temperature range is well-matched to outdoor sensor housings and underwater transducer assemblies.
Recommended
Retrofit Replacement for Legacy Boards
Many legacy industrial control boards and test fixtures were designed around the ADC08062CIWM/NOPB in the 1990s and 2000s, and the part continues to be specified as a direct-order replacement on maintenance BOMs. The 20-SOIC wide footprint and pinout match the original National Semiconductor datasheet, so field service technicians can swap units without PCB rework. Because the part is now obsolete, sourcing through Rochester Electronics or authorized brokers is the standard practice for sustaining equipment already in service.
Recommended
Recommended Products Summary
Engineering reference data for ADC08062CIWM/NOPB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC08061CIWM/NOPB | ADC08060CIWM/NOPB | ADC08062CIN/NOPB |
|---|---|---|---|---|
| Brand | Texas Instruments (formerly NSC) | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 20-SOIC (IWM) 0.295 inch wide | 20-SOIC (IWM) 0.295 inch wide - same | 20-SOIC (IWM) 0.295 inch wide - same | 20-DIP (N) - different (through-hole) |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits |
| Sampling Rate | 1.5 MSPS | 1.5 MSPS | 1.5 MSPS | 1.5 MSPS |
| Input Channels | 2 (single-ended, mux) | 1 (single-ended) | 1 (single-ended) | 2 (single-ended, mux) |
| Data Interface | Parallel | Parallel | Parallel | Parallel |
| Conversion Time | 500 ns typical | 500 ns typical | 500 ns typical | 500 ns typical |
| Power Dissipation | 125 mW typical | 125 mW typical | 125 mW typical | 125 mW typical |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Lifecycle | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Patented multi-step flash architecture in 8-bit ADC class (vs ADC0804LCWMX (successive-approximation ADC))
- Internal 2-input analog multiplexer (vs ADC08061 (single-channel variant in same family))
- 20-SOIC wide-body package with full industrial temp range (vs ADC08062CIN/NOPB (20-DIP through-hole variant))
Design Notes
The ADC08062CIWM/NOPB requires separate analog (AVDD, pin 20) and digital (DVDD, pin 1) +5 V supply rails. Place a 10 uF tantalum or ceramic bulk capacitor and a 0.1 uF ceramic decoupling capacitor as close as possible to each supply pin. Star-ground the analog ground (AGND, pin 3) and digital ground (DGND, pin 16) at a single point near the converter to prevent digital switching noise from coupling into the analog input path. Ferrite beads on the supply traces may further reduce digital switching noise on the analog rail.
Avoid driving the analog inputs with source impedances above approximately 1 kohm without a buffer amplifier; the internal sample-and-hold requires a low-impedance drive to settle within the 500 ns conversion window. The external reference (pin 19) must be a low-noise, low-drift source such as a TL431 or dedicated reference IC; do not derive it from the +5 V supply through a resistor divider, as supply noise will be sampled directly into the conversion result. Leave unused analog inputs tied to analog ground to prevent crosstalk into the active channel.
Route the parallel data bus (DB0-DB7) and the control signals (CONVST, RD, CS) away from the analog input traces to prevent digital-edge coupling into the analog front end. Keep analog input traces short and surrounded by an analog ground pour on the top layer. Place the external reference decoupling capacitor within 5 mm of pin 19. The 20-SOIC wide-body package has adequate thermal dissipation at 125 mW typical; no heatsink is required even in enclosed industrial housings.
Compliance Information
NOPB suffix indicates Pb-free matte-tin lead finish and RoHS compliance per TI ordering nomenclature. REACH and halogen-free status not explicitly listed in the verified data; AEC-Q100 not applicable for industrial-grade ADC. Originally released by National Semiconductor (NSC), now under Texas Instruments after 2011 acquisition.
