The CA3338 family are CMOS/SOS high speed R2R voltage output digital-to-analog converters. They can operate from a single +5V supply, at video speeds, and can produce “rail-to-rail” output swings. Internal level shifters and a pin for an optional second supply provide for an output range below digital ground. The data complement control allows the inversion of input data while the latch enable control provides either feedthrough or latched operation. Both ends of the R2R ladder network are available externally and may be modulated for gain or offset adjustments. In addition, “glitch” energy has been kept very low by segmenting and thermometer encoding of the upper 3 bits. The CA3338 is manufactured on a sapphire substrate to give low dynamic power dissipation, low output capacitance, and inherent latch-up resistance.
The CA3338 family are high‑speed CMOS/SOS 8‑bit R2R voltage‑output digital‑to‑analog converters that operate from a single +5 V supply and can deliver rail‑to‑rail output swings. Features include low‑glitch segmented ladder, data complement control, feed‑through latch, and the ability to operate in unipolar or bipolar mode.
Typical applications are TV/video displays, high‑speed oscilloscopes, digital waveform generators and direct‑digital synthesis. The device includes handling recommendations for ESD protection and specifies operating conditions such as supply voltage, temperature range and maximum ratings.
| Resolution | 8 bits |
|---|---|
| Typical Update Rate | 50 MHz |
| Recommended Supply Voltage Range | 4.5 V to 7.5 V |
| Accuracy (Typ) | ±0.5 LSB |
| Static Supply Current (LE Low, D0‑D7 Low) | 100 µA |
| Dynamic Supply Current (VOUT 10 MHz, ±2.5 V) | 25 mA |
The recommended supply voltage range is 4.5 V to 7.5 V.
The CA3338 provides 8‑bit resolution.
The typical update rate is 50 MHz.