Analog Devices Inc. AD916 RF DAC

Analog Devices AD916x 11/16ビットデジタルアナログコンバータ（DAC）には、高ダイナミックレンジ、広帯域幅、6GSPSデータレートが備わっており、最も要求の厳しい高速RFアプリケーションに対応します。 AD916x DACコアは、2x補間フィルタを用いたクワッドスイッチアーキテクチャが特徴です。この設計によってAD916x DACは、最大12GSPSのアップデートレートで効率的なDACを提供できます。

Baseband Mode
When in baseband mode, AD9161/AD9162/AD9163/AD9164 DACs support DOCSIS 3.1 cable infrastructure compliance. The AD9161/AD9162 DACs use a minimum of two carriers to operate across a full 1.794GHz spectrum. The AD9163/AD9164 DACs use a minimum of one carrier to operate up to a 1GHz (AD9163) or 1.791GHz (AD9164) signal bandwidth. A 2x Interpolator filter (FIR85) allows the AD9161/AD9162/AD9163 DACs to operate at lower data rates and converter clocking. This reduces the overall system power and eases the filtering requirements.

Mix-Mode
When in mix-mode, the AD9161/AD9162/AD9163/AD9164 DACs maintain an exceptional dynamic range and can reconstruct RF carriers in the 2nd and 3rd Nyquist zones up to 7.5GHz. Designers can program the output current from 8mA to 40mA.

Data Interface
The AD9161/AD9162 data interface features up to eight programmable JESD204B SERDES lanes for maximum design flexibility. The device's serial peripheral interface (SPI) configures the AD9161/AD9162/AD9163/AD9164 DACs and monitors the status of all registers.

特徴

DAC update rate to 12GSPS (minimum)
Direct RF synthesis at 6GSPS (minimum)
- DC to 2.5GHz in baseband 1 x bypass mode (AD9161/AD9162)
- DC to 2.5GHz in baseband mode (AD9164)
- DC to 6GHz in 2x nonreturn-to-zero (NRZ) mode (AD9161/AD9162/AD9163/AD9164)
- DC to 3GHz in nonreturn-to-zero (NRZ) mode (AD9163)
- 1.5 to 7.5GHz in mix-mode

Bypassable interpolation (1x or bypass mode) (AD9161/AD9162/AD9164)
2x, 3x, 4x,, 6x, 8x, 12x, 16x, 24x
Selectable interpolation (AD9163) 6x, 8x, 12x, 16x, 24x
Excellent dynamic performance

アプリケーション

Broadband communications systems
- DOCSIS 3.1 cable modem termination system (CMTS)/video on demand (VOD)/edge quadrature amplitude modulation (EQAM)
Wireless Communications InfrastructureWCDMA, LTE, LTE-A, Point-to-point