The AD9740 is a high performance 10-bit, 210 MSPS TxDAC® D/A converter with excellent spurious-free dynamic range performance. It supports two data formats: twos complement and straight binary. The AD9740 provides differential current outputs with a current range of 2 mA to 20 mA. It is available in 28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP packages. The AD9740 is suitable for a wide range of communications applications, including wideband communication transmit channel, direct IF, base stations, wireless local loops, digital radio links, and direct digital synthesis (DDS).
The AD9740 belongs to Analog Devices' TxDAC family and offers a 10‑bit resolution with a maximum update rate of 210 MSPS. It features differential current outputs (2 mA to 20 mA), an on‑chip 1.2 V temperature‑compensated reference, and low power dissipation (135 mW at 3.3 V). The device is supplied in 28‑lead SOIC, 28‑lead TSSOP, and 32‑lead LFCSP packages.
The datasheet provides detailed specifications, pin configurations, absolute maximum ratings, thermal characteristics, and typical performance graphs such as SFDR versus output frequency. Application notes include wiring for differential coupling, single‑ended outputs, and power‑grounding considerations, along with an evaluation board layout.
| Resolution | 10 Bits |
|---|---|
| Maximum Output Update Rate | 210 MSPS |
| Typical Power Dissipation | 135 mW @ 3.3 V |
| Supply Voltage Range (AVDD/DVDD/CLKVDD) | 2.7 V – 3.6 V |
| Full‑Scale Output Current | 20 mA |
The AD9740 can operate up to 210 MSPS conversion rate.
Typical power dissipation is 135 mW when powered at 3.3 V.
The analog, digital, and clock supplies (AVDD, DVDD, CLKVDD) each operate from 2.7 V to 3.6 V.
The device is offered in 28‑lead SOIC, 28‑lead TSSOP, and 32‑lead LFCSP packages.