ADV7128 is a video speed digital-to-analog converter with a fast refresh rate of 80 MHz and 10-bit resolution. It is compatible with a wide variety of high-resolution color graphics systems, including RS-343A/RS-170 and the proposed SMPTE 240M standard. It can also form a complete frequency synthesizer (DDS) when combined with the AD9955 numerically controlled oscillator. Ideal for power and cost-sensitive communications applications.
The ADV7128 is a high‑speed, 10‑bit video digital‑to‑analog converter implemented in a monolithic +5 V CMOS process. It accepts TTL‑compatible digital inputs and provides current‑mode analog outputs that meet RS‑343A and RS‑170 video standards.
Typical applications include HDTV, high‑resolution color graphics, digital radio modulation, image processing, and instrumentation. The device includes a reference amplifier, optional external 1.23 V voltage reference, and is supplied in a 28‑lead SOIC (R‑28) package.
| Resolution | 10 Bits |
|---|---|
| Integral Nonlinearity (INL) | +1 LSB max |
| Differential Nonlinearity (DNL) | +1 LSB max |
| Input High Voltage | 2 V min |
| Input Low Voltage | 0.8 V max |
| Gray Scale Current Range | 15 mA min to 22 mA max |
| White Level Current | 16.74 mA min (typical 17.62 mA) |
| Black Level Current | 0 µA min (typical 5 µA) |
| Output Compliance | 0 V min to +14 V max |
| Power Supply Voltage | 5 V nominal |
| Power Supply Current (max) | 125 mA max |
| Power Dissipation | 625 mW max |
| Maximum Clock Rate | 80 MHz |
The device operates up to 80 MHz.
An external 1.23 V reference is required.
It is available in a 28‑lead SOIC (R‑28) package.