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参数资料
| 型号： | DS1865T+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/67页 |
| 文件大小： | 0K |
| 描述： | IC PON TRIPLEXER CTRLR 28TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | * |
| 应用： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 管件 |
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DS1865
PON Triplexer Control and
Monitoring Circuit
12
____________________________________________________________________
bias update comparison was above the APC set point,
and checks LTXP to see if the last bias update compari-
son was below the APC set point. Depending on the
results of the comparison, the corresponding alarms
and warnings (TXP-HI, TXP-LO) are asserted or
deasserted.
The DS1865 has a programmable comparator sample
time based on an internally generated clock to facilitate a
wide variety of external filtering options suitable
for burst-mode transmitter data rates between 155Mbps
and 1250Mbps. The rising edge of the burst enable
(BEN) triggers the sample to occur, and the Update Rate
register (Table 02h, Register 88h) determines the sam-
pling time. The first sample occurs tFIRST after the rising
edge of BEN. The internal clock is asynchronous to BEN,
causing a ±50ns uncertainty regarding when the first
sample will occur following BEN. After the first sample
occurs, subsequent samples occur on a regular interval,
tREP. Table 2 shows the sample rate options available.
1
2
3
4
5
6
7
8
9
10
11
12
13
tINIT
VPOA
BINARY SEARCH
APC
INTEGRATOR
ON
tSEARCH
VMOD
IBIAS
VCC
BIAS
SAMPLE
ISTEP
4x ISTEP
3x ISTEP
2x ISTEP
Figure 1. Power-Up Timing
TX-D
IBIAS
VMOD
tOFF
tON
tOFF
Figure 2. TX-D Timing (Normal Operating Conditions)
Table 2. Update Rate Timing
SR3–SR0
MINIMUM TIME
FROM BEN TO
FIRST SAMPLE
(tFIRST) ±50ns
REPEATED
SAMPLE PERIOD
FOLLOWING FIRST
SAMPLE (tREP)
0000b
350ns
800ns
0001b
550ns
1200ns
0010b
750ns
1600ns
0011b
950ns
2000ns
0100b
1350ns
2800ns
0101b
1550ns
3200ns
0110b
1750ns
3600ns
0111b
2150ns
4400ns
1000b
2950ns
6000ns
1001b*
3150ns
6400ns
*
All codes greater than 1001b (1010b–1111b) use the maximum
sample time of code 1001b.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1865T TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PON Triplexer Control and Monitoring Circuit |
| DS1865T+ | 功能描述:电流和电力监控器、调节器 PON Triplexer Cntrl & Monitoring Circuit RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| DS1865T+T&R | 制造商:Maxim Integrated Products 功能描述:TRIPLEXER CONTROL AND MONITORING CIRCUIT 1TX 1RX 1.25GBPS 28 - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC PON CONTROL TRI 28-TQFN 制造商:Maxim Integrated Products 功能描述:Current & Power Monitors & Regulators PON Triplexer Cntrl & Monitoring Circuit |
| DS1865T+T&R | 功能描述:电流和电力监控器、调节器 PON Triplexer Cntrl & Monitoring Circuit RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| DS1865T+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PON Triplexer Control and Monitoring Circuit |
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