ADF4154: Fractional-N Frequency Synthesizer
The ADF4154 is a fractional-N frequency synthesizer that implements local oscillators in the up conversion and down conversion sections of wireless receivers and transmitters. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a Σ-Δ based fractional interpolator to allow programmable fractional-N division. The INT, FRAC, and MOD registers define an overall N divider (N = (INT + (FRAC/MOD))). In addition, the 4-bit reference counter (R counter) allows selectable REFIN frequencies at the PFD input. A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and a voltage controlled oscillator (VCO).
A key feature of the ADF4154 is the fast-lock mode with a builtin timer. The user can program a predetermined count-down time value so that the PLL will remain in wide bandwidth mode, instead of having to control this time externally.
Control of all on-chip registers is via a simple 3-wire interface. The device operates with a power supply ranging from 2.7 V to 3.3 V, and can be powered down when not in use.
ADF4154 特点
- RF bandwidth 500 MHz to 4 GHz
- 2.7 V to 3.3 V power supply
- Separate VP allows extended tuning voltage
- Programmable dual-modulus prescaler 4/5, 8/9
- Programmable charge pump currents
- 3-wire serial interface
- Analog and digital lock detect
- Power-down mode
- Pin compatible with the ADF4110/ADF4111/ADF4112/ADF4113/ADF4106 and ADF4153
- Programmable modulus on fractional-N synthesizer
- Trade-off noise versus spurious performance
- Fast-lock mode with built-in timer
ADF4154 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADF4154BCP | 量产 | 20 ld LFCSP (4x4mm) | 20 | 工业 |
| ADF4154BCP-REEL | 量产 | 20 ld LFCSP (4x4mm) | 20 | 工业 |
| ADF4154BCP-REEL7 | 量产 | 20 ld LFCSP (4x4mm) | 20 | 工业 |
| ADF4154BCPZ | 量产 | 20 ld LFCSP (4x4mm) | 20 | 工业 |
| ADF4154BCPZ-RL | 量产 | 20 ld LFCSP (4x4mm) | 20 | 工业 |
| ADF4154BCPZ-RL7 | 量产 | 20 ld LFCSP (4x4mm) | 20 | 工业 |
| ADF4154BRU | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADF4154BRU-REEL | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADF4154BRU-REEL7 | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADF4154BRUZ | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADF4154BRUZ-RL | 量产 | 16 ld TSSOP | 16 | 工业 |
| ADF4154BRUZ-RL7 | 量产 | 16 ld TSSOP | 16 | 工业 |
| EVAL-ADF4154EBZ1 | 量产 | 评估板 | - | 待定 |
ADF4154 应用技术支持与电子电路设计开发资源下载
- ADF4154 数据手册DataSheet 下载 . PDF
- ADI 模拟器件公司比较器产品选型指南 . PDF
- Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF
- 时钟和定时IC产品介绍 . PDF