Analog Devices Inc. AD916 射频 DAC

Analog Devices AD916x 11/16 位数模转换器 (DAC) 具有高动态范围、宽带宽和 6GSPS 数据速率，支持要求最严苛的高速射频应用。 AD916x DAC 内核采用一个配 2x 内插滤波器的四开关架构。该设计使 AD916x DAC 能够提供高达 12GSPS 的有效 DAC 更新速率。

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.

特性

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

应用

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