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8V19N492-39中文资料瑞萨数据手册PDF规格书
8V19N492-39规格书详情
Description
The 8V19N492-39 is a fully integrated FemtoClock NG jitter
attenuator and clock synthesizer. The device is designed as a
high-performance clock solution for conditioning and
frequency/phase management of wireless base station radio
equipment boards. The device is optimized to deliver excellent
phase noise performance as required in GSM, WCDMA, LTE, and
LTE-A radio board implementations. The 8V19N492-39 supports
JESD204B subclass 0 and 1 clocks.
A two-stage PLL architecture supports both jitter attenuation and
frequency multiplication. The first stage PLL is the jitter attenuator
and uses an external VCXO for best possible phase noise
characteristics. The second stage PLL locks on the VCXO-PLL
output signal and synthesizes the target frequency.
The 8V19N492-39 supports the clock generation of
high-frequency clocks from the selected VCO and low-frequency
synchronization signals (SYSREF). SYSREF signals are internally
synchronized to the clock signals. Delay functions exist for
achieving alignment and controlled phase delay between system
reference and clock signals and to align/delay individual output
signals. The two redundant inputs are monitored for activity. Four
selectable clock switching modes are provided to handle clock
input failure scenarios. Auto-lock, individually programmable
output frequency dividers and phase adjustment capabilities are
added for flexibility.
The device is configured through a 3/4-wire SPI interface and
reports lock and signal loss status in internal registers and via a
lock detect (LOCK) output. Internal status bit changes can also be
reported via the nINT output.
The 8V19N492-39 is ideal for driving converter circuits in wireless
infrastructure, radar/imaging, and instrumentation/medical
applications. The device is a member of the high-performance
clock family from Renesas.
Typical Applications
▪ Wireless infrastructure applications: GSM, WCDMA, LTE,
LTE-A
▪ Ideal clock driver for jitter-sensitive ADC and DAC circuits
▪ Low phase noise clock generation
▪ Ethernet line cards
▪ Radar and imaging
▪ Instrumentation and medical
Features
▪ High-performance clock RF-PLL with support for JESD204B
▪ Optimized for low phase noise: -150.5dBc/Hz (800kHz offset;
245.76MHz clock)
▪ Integrated phase noise of 46fs RMS typical (12kHz-20MHz).
▪ Dual-PLL architecture
▪ First PLL stage with external VCXO for clock jitter attenuation
▪ Second PLL with internal FemtoClock NG PLL: 3932.16MHz
▪ Six output channels with a total of 16 outputs, organized in:
— Four JESD204B channels (device clock and SYSREF
output) with two, four, and five outputs
— One clock channel with two outputs
— One VCXO output
▪ Configurable integer clock frequency dividers
▪ Supported clock output frequencies include: 3932.16, 1966.08,
983.04, 491.52, 245.76, 122.88, 61.44, and 30.72MHz
▪ Low-power LVPECL/LVDS outputs support configurable signal
amplitude, DC and AC coupling, and LVPECL, LVDS line
terminations techniques
▪ Phase delay circuits
— Clock phase delay with 256 steps of 254ps and a range of
0 to 62.02ns
— Individual SYSREF phase delay with 8 steps of 255ps
— Additional individual SYSREF fine phase delay with
25ps steps
— Global SYSREF signal delay with 256 steps of 509ps and a
range of 0 to 129.7ns
▪ Redundant input clock architecture with two inputs including:
— Input activity monitoring
— Manual and automatic, fault-triggered clock selection
modes
— Priority controlled clock selection
— Digital holdover and hitless switching
— Differential inputs accept LVDS and LVPECL signals
▪ SYSREF generation modes include internal and external
trigger mode for JESD204B
▪ Supply voltage: 3.3V
▪ SPI Interface, 3/4 wire configurable
▪ SPI and control I/O voltage: 1.8V/3.3V (configurable)
▪ Package: 10 × 10 mm 88-VFQFPN
▪ Temperature range: -40°C to +85°C
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
IDT |
23+ |
NA/ |
3261 |
原装现货,当天可交货,原型号开票 |
询价 | ||
RENESAS(瑞萨)/IDT |
23+ |
VFQFPN88(10x10) |
6000 |
诚信服务,绝对原装原盘 |
询价 | ||
RENESAS(瑞萨)/IDT |
2021+ |
VFQFPN-88(10x10) |
499 |
询价 | |||
RENESAS(瑞萨)/IDT |
23+ |
VFQFPN88(10x10) |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
RENESAS(瑞萨)/IDT |
1942+ |
VFQFPN-88(10x10) |
2532 |
向鸿只做原装,仓库库存优势数量请确认 |
询价 | ||
Renesas |
21+ |
25000 |
原厂原包 深圳现货 主打品牌 假一赔百 可开票! |
询价 | |||
RENESAS(瑞萨)/IDT |
2117+ |
VFQFPN-88(10x10) |
315000 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
询价 | ||
RENESAS(瑞萨电子) |
22+ |
NA |
500000 |
万三科技,秉承原装,购芯无忧 |
询价 | ||
RENESAS |
23+ |
NA |
65 |
时钟抖动衰减器 |
询价 | ||
Renesas Electronics America In |
24+ |
88-VFQFN 裸露焊盘 |
9350 |
独立分销商,公司只做原装,诚心经营,免费试样正品保证 |
询价 |