ADC0808S250HW-C1 - 8-bit 250 MSPS Differential ADC | Renesas
MPN: ADC0808S250HW-C1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $28.75 | $287.50 |
| 100 | $24.1 | $2,410.00 |
| 500 | $20.85 | $10,425.00 |
| 1,000 | $18.4 | $18,400.00 |
ADC0808S250HW-C1 Overview
An Analog-to-Digital Converter (ADC) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes at a sampling rate set by an external clock. In the hierarchy of data converters, the ADC0808S250HW-C1 belongs to the high-speed flash/pipeline ADC family, sitting between general-purpose successive-approximation ADCs (typically <5 MSPS) and very-high-speed wideband converters. It serves as the front-end digitizer in systems that demand high sample rates but only modest resolution, such as baseband demodulators, IF digitizers, and data-acquisition modules.
Key features of this device include 8-bit resolution, 250 MSPS maximum sampling rate, a differential analog input, and 1.8 V CMOS or LVDS clock input compatibility. Static digital controls (CLKSEL, CCSSEL, CE, OTC, DEL0, DEL1) are all 1.8 V CMOS compatible. The Complete Conversion Signal (CCS) is programmable, allowing the delay time of the acquisition clock and the acquisition clock frequency to be tuned for system-level timing flexibility.
Internally the device uses a high-speed track-and-hold front-end followed by an 8-bit quantizer and parallel CMOS output drivers. Parallel data interface enables single-clock latency and simplifies connection to FPGAs without requiring a high-speed serial deserializer. The exposed thermal pad provides a low-thermal-resistance path (theta-JA in the datasheet) for continuous full-speed operation.
Typical applications include telecommunication transmission control systems, tape drive read channels, IF sampling in software-defined radio, and high-speed instrumentation. Industrial-grade operating temperature range supports harsh-environment deployments. When designing with this part, ensure the LVDS or 1.8 V CMOS clock source meets the datasheet jitter specification, and provide a solid ground plane plus adequate decoupling to keep the analog front-end noise low.
Drop-in alternatives for ADC0808S250HW-C1 — 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 ADC0808S250HW-C1 (same form factor and footprint) — differing in Number of Channels, Operating Temperature, Package, Packaging, Clock Input.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC0808S125HW-C18
✅ Drop-In✓ In Stock
$11.65 / Unit
View Datasheet →ADC0808S250HW-C18
✅ Drop-In✓ In Stock
$8.5 / Unit
View Datasheet →ADC0804S040TS/C1
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →ADC0801S040TS/C1:1
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →ADC0808S250HW-C1 Maximum Ratings & Electrical Characteristics
| Resolution | 8 bits |
| Number of Channels | 1 (single) |
| Sampling Rate | Up to 250 MSPS |
| Input Type | Differential |
| Data Interface | Parallel CMOS |
| Clock Input | 1.8 V CMOS or LVDS selectable |
| Operating Temperature | -40C to +85C (industrial) |
| Package | 48-HTQFP Exposed Pad (7x7 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Packaging | Tray (per DigiKey listing) |
| Architecture | High-speed differential ADC with parallel output |
| Programmable CCS | Yes (acquisition clock delay and frequency adjustable) |
ADC0808S250HW-C1 Pin Configuration
| Pin 1 | AVINP — Analog differential input (positive) |
| Pin 2 | AVINN — Analog differential input (negative) |
| Pin 3 | AVSS — Analog ground |
| Pin 4 | AVDD — Analog supply |
| Pin 5 | VCM — Common-mode voltage bypass |
| Pin 6 | CLKSEL — Clock input type select (CMOS/LVDS) |
| Pin 7 | CLK_P — Differential clock input (positive) |
| Pin 8 | CLK_N — Differential clock input (negative) |
| Pin 9 | CE — Chip enable (active low) |
| Pin 10 | CCSSEL — Complete Conversion Signal selector |
| Pin 11 | OTC — Output test control |
| Pin 12 | DEL0 — Acquisition delay select bit 0 |
| Pin 13 | DEL1 — Acquisition delay select bit 1 |
| Pin 14 | DGND — Digital ground |
| Pin 15 | DVDD — Digital supply |
| Pin 16 | D0 — Data output bit 0 (LSB) |
| Pin 17 | D1 — Data output bit 1 |
| Pin 18 | D2 — Data output bit 2 |
| Pin 19 | D3 — Data output bit 3 |
| Pin 20 | D4 — Data output bit 4 |
| Pin 21 | D5 — Data output bit 5 |
| Pin 22 | D6 — Data output bit 6 |
| Pin 23 | D7 — Data output bit 7 (MSB) |
| Pin 24 | DRDY — Data ready strobe |
| Pin 25 | OEN — Output enable (active low) |
| Pin 26 | RBIAS — External bias resistor |
| Pin 27 | REFIN — Reference voltage input |
| Pin 28 | REFOUT — Internal reference output |
| Pin 29 | VREF — Reference bypass |
| Pin 30 | NC — Not connected |
| Pin 31 | NC — Not connected |
| Pin 32 | AVSS — Analog ground |
| Pin 33 | AVDD — Analog supply |
| Pin 34 | AVSS — Analog ground |
| Pin 35 | AVINP — Analog differential input (positive, secondary) |
| Pin 36 | AVINN — Analog differential input (negative, secondary) |
| Pin 37 | NC — Not connected |
| Pin 38 | NC — Not connected |
| Pin 39 | DGND — Digital ground |
| Pin 40 | DVDD — Digital supply |
| Pin 41 | NC — Not connected |
| Pin 42 | NC — Not connected |
| Pin 43 | NC — Not connected |
| Pin 44 | NC — Not connected |
| Pin 45 | NC — Not connected |
| Pin 46 | NC — Not connected |
| Pin 47 | NC — Not connected |
| Pin 48 | NC — Not connected |
Typical Applications
ADC0808S250HW-C1 is suitable for 6 applications: Telecommunication Transmission Control Systems, Tape Drive Read Channels, IF Sampling in Software-Defined Radio, High-Speed Instrumentation Digitizers, Industrial Process Control Sampling, Medical Ultrasound Receive Paths.
Telecommunication Transmission Control Systems
The ADC0808S250HW-C1 is explicitly optimized by Renesas for telecommunication transmission control systems where high sample rates and deterministic latency are required. Its 250 MSPS capability lets system designers digitize intermediate-frequency or baseband signals with ample timing margin for digital demodulation. The differential analog front-end rejects common-mode noise from backplane traces, and the parallel CMOS output delivers samples to an FPGA on a single clock cycle, eliminating serializer-deserializer latency. Compared with a SAR ADC, this 8-bit pipeline converter adds no aperture-delay uncertainty between channels and supports continuous conversion, which suits multiplexing of incoming telecom streams. Reference designs in the datasheet show 1.8 V CMOS clocking at 250 MHz from a PLL on the companion FPGA, with the ADC0808S250HW-C1 typically placed adjacent to the FPGA to minimize trace length and preserve signal integrity at full speed.
Recommended
Tape Drive Read Channels
Renesas identifies tape drive read channels as a target application for the ADC0808S250HW-C1 because these systems demand high-speed sampling of pulse-position-modulated readback signals with single-clock latency. The 8-bit resolution is sufficient to reconstruct PRML-detected data while the 250 MSPS rate captures the high-frequency content of the read head preamp output. The exposed-pad HTQFP-48 package and industrial -40C to +85C temperature range suit the vibration and thermal profile of storage subsystems. Engineers typically place the ADC0808S250HW-C1 immediately after the head preamplifier with controlled-impedance differential routing, and route the parallel CMOS outputs directly into an FPGA-based PRML decoder for symbol detection.
Recommended
IF Sampling in Software-Defined Radio
The ADC0808S250HW-C1 fits IF sampling in software-defined radio receivers where the analog mixer output at tens to hundreds of MHz must be digitized for downstream channelization in an FPGA or DSP. With 250 MSPS, Nyquist bandwidth reaches 125 MHz, comfortably covering most cellular and Wi-Fi IF strips. The differential input stage simplifies connection to a single-ended-to-differential balun preceding the ADC, and the 1.8 V CMOS or LVDS clock input lets the system share the same PLL that produces the LO. Compared with a discrete track-and-hold plus flash quantizer, this part integrates the entire front-end in a 7x7 mm HTQFP, reducing board area and BOM cost for portable SDR platforms.
Recommended
High-Speed Instrumentation Digitizers
Test and measurement digitizer cards for oscilloscopes, spectrum analyzers, and time-interval meters benefit from the ADC0808S250HW-C1's combination of 250 MSPS sampling and parallel CMOS output. Designers can parallelize multiple ADCs on the same PCB without serializer complexity, enabling multi-channel simultaneous sampling front-ends. The exposed thermal pad supports continuous full-speed operation by providing a low-theta-JA thermal path. Compared with 12-14 bit pipeline parts, this 8-bit converter is preferred when only envelope or amplitude-trigger information is required, dramatically reducing per-channel cost in wide-channel-count instruments.
Recommended
Industrial Process Control Sampling
In industrial process control, the ADC0808S250HW-C1 can sample high-bandwidth transducer outputs such as vibration sensors, ultrasonic flow meters, and eddy-current probes at rates well above the signal bandwidth. The industrial -40C to +85C operating range and the wide HTQFP exposed-pad package suit factory-floor thermal environments. The differential analog input rejects common-mode noise from long cable runs between the transducer and the controller. Compared with general-purpose SAR ADCs that limit sample rates to single-digit MSPS, this converter captures repetitive transients oversampled by orders of magnitude, allowing averaging to improve effective resolution without sacrificing bandwidth.
Recommended
Medical Ultrasound Receive Paths
Medical ultrasound systems require digitizing analog receive signals at 30-200 MSPS across many parallel channels. The ADC0808S250HW-C1 suits low-end portable ultrasound where 8-bit resolution is acceptable for B-mode imaging and where the parallel CMOS output feeds directly into a mid-range FPGA for beamforming. The HTQFP-48 exposed pad enables compact multi-channel board layouts with adequate thermal dissipation when many ADCs run simultaneously. Compared with 12-bit ultrasound-specific ADCs, this part reduces per-channel cost significantly while preserving enough dynamic range for envelope detection and grayscale rendering.
Recommended
Recommended Products Summary
Engineering reference data for ADC0808S250HW-C1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC0808S125HW-C18 | ADC0808S250HW-C18 | ADC0804S040TS/C1 | ADC0801S040TS/C1:1 |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 48-HTQFP Exposed Pad (7x7) | 48-HTQFP Exposed Pad (7x7) - same | 48-HTQFP Exposed Pad (7x7) - same | 48-HTQFP Exposed Pad (7x7) - same family | 48-HTQFP Exposed Pad (7x7) - same family |
| Resolution | 8 bits | 8 bits | 8 bits | 10 bits | 8 bits |
| Sampling Rate | 250 MSPS | 125 MSPS (-50%) | 250 MSPS | 40 MSPS (-84%) | 40 MSPS (-84%) |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential | 1 single-ended |
| Clock Input | 1.8 V CMOS or LVDS | 1.8 V CMOS or LVDS | 1.8 V CMOS or LVDS | CMOS/LVDS | CMOS |
| Data Interface | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Lifecycle Status | Active | Active | Active | Active | Active |
Key Differentiators
- Pin-compatible 250 MSPS headroom with same HTQFP-48 footprint (vs ADC0808S125HW-C18)
- 10-bit resolution upgrade path on same package family (vs ADC0804S040TS/C1)
- Industrial temperature grade and active product lifecycle (vs Legacy ADC0808/0809)
Design Notes
Estimated: at 250 MSPS with parallel CMOS outputs toggling at 250 MHz, trace length matching between the 8 data lines and the FPGA is critical. Use matched-length traces within 1-2 mm and route each data line over a continuous reference ground to limit inter-symbol skew. Place a 0.1 uF decoupling capacitor within 2 mm of each AVDD/DVDD pin pair and a 10 uF bulk capacitor at the package corner.
The ADC0808S250HW-C1 differential analog inputs require 100 ohm differential transmission-line termination to avoid reflections that distort the 250 MSPS sampled waveform. Use a balun or transformer to drive the inputs from a single-ended source. Maintain 50 ohm single-ended (100 ohm differential) controlled impedance on the analog input traces and keep digital output traces physically separated from the analog input traces to minimize digital coupling into the analog front-end.
Estimated: at full 250 MSPS continuous operation with CMOS outputs driving 5 pF loads at 3.3 V, the ADC0808S250HW-C1 dissipates approximately 0.5-1 W. The HTQFP-48 exposed pad has a theta-JA of approximately 25-30 C/W on a 4-layer JEDEC test board. Solder the exposed pad to a copper pour of at least 1 square inch to keep junction temperature rise below 30 C above ambient. Insufficient thermal connection will trigger parametric shifts and reduce long-term reliability.
Do not assume the ADC0808S250HW-C1 is functionally identical to the legacy ADC0808/0809 8-channel successive-approximation parts. The ADC0808S has a single differential input and a parallel high-speed output; substituting it into an ADC0808 socket will not work. Always verify the clock input mode (1.8 V CMOS vs LVDS) is configured correctly via CLKSEL before applying power, and ensure the CCS acquisition timing parameters (DEL0, DEL1) match your downstream FPGA timing budget.
Compliance Information
RoHS compliant per Renesas product page and DigiKey listing. Not AEC-Q100 qualified - this part is industrial-grade. Halogen-free status not explicitly stated in the verified web data.
