参数资料
| 型号： | DS1862AB+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 17/42页 |
| 文件大小： | 0K |
| 描述： | IC LASR CTRLR 7CHAN 5.5V 25CSBGA |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 126 |
| 类型： | 激光二极管控制器（光纤） |
| 数据速率： | 10Gbps |
| 通道数： | 7 |
| 电源电压： | 2.9 V ~ 5.5 V |
| 电流 - 电源： | 3mA |
| 工作温度： | -40°C ~ 100°C |
| 封装/外壳： | 25-TFBGA，CSPBGA |
| 供应商设备封装： | 25-BGA（5x5） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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XFP Laser Control and Digital Diagnostic IC
Monitor Channels
The DS1862A has seven monitored voltage signals that
are polled in a round-robin multiplexed sequence and
are updated with the frame rate, t FRAME . All channels
are read as 16-bit values, but have 13-bit resolution,
and with the exception of temperature measurements,
all channels are stored as unsigned values. The resulting
16-bit value for all monitored channels, except internal
temperature, is calculated by internally averaging the
analog-to-digital result eight times. The resulting internal
temperature monitor channel is averaged 16 times. See
the Internal Calibration section for a complete descrip-
tion of each channel’s method(s) of internal calibration.
The AUX1MON, AUX2MON, and V CC2/3 monitor chan-
nels are optional and can be disabled. This feature
allows for shorter frame rate for the essential monitor
channels. Channels that cannot be disabled are inter-
nal temperature, BMD, RSSI, and IBIASMON. A table of
full-scale (FS) signal values (using factory internal cali-
bration without right shifting) and the resulting FS code
values for all seven channels is provided in Table 4.
Both AUX1MON and AUX2MON can be used to mea-
sure temperature as a function of voltage on their
respective pins. They can be enabled by selecting
either 0h or 4h from Table 5. Internal (or external) cali-
bration may be required to transmute the input voltage
to the desired two’s-complement digital code, readable
from the result registers in lower memory, Bytes 6Ah,
6Bh, 6Ch, 6Dh.
Measuring V CC2/3
The DS1862A has the flexibility to internally measure
either V CC2 or V CC3 to monitor supply voltage. V CC2 or
V CC3 is user selectable by the V CC2/3 _SEL bit in Table
01h, Byte DCh. To remove V CC2/3 from the round-robin
monitor update scheme, despite having V CC2 or V CC3
selected to be monitored, the Reserve_EN bit in Table
04h, Byte 8Bh can be programmed to a 0. The analog
power-on-reset flag, POA, indicates the status of V CC3
power supply. Even though POA seems to behave simi-
larly to V CC2/3 monitor channel, it is completely sepa-
rate and has no connection.
Measuring Temperature—Internal or External
The DS1862A is capable of measuring temperature on
three different monitor channels: internal temperature
sensor, AUX1MON, and AUX2MON. Only the internal
temperature and AUX2MON channels are capable of
indexing the LUT to control the extinction ratio. To use
RESERVE_EN
0
0
1
1
V CC2/3_ SEL
0
1
0
1
RESULT
V CC2/3 result not enabled.
V CC2/3 result not enabled.
V CC3 is being measured.
V CC2 is being measured.
an external temperature sensor on AUX2MON, the
TEMP_INT/EXT bit in Table 04h, Byte 8Bh, must be set.
While AUX2MON controls the extinction ratio, the inter-
nal temperature sensor does not stop running; despite
extinction ratio control by AUX2MON, it is this internal
temperature signal that continues to control the status
of temperature flags. Also, when TEMP_INT/EXT = 1,
the internal temperature clamps at -40°C and
+103.9375°C, and when TEMP_INT/EXT = 0 it clamps at -
120°C and +127.984°C. AUX2MON, however, does have
its own flag to indicate an out-of-tolerance condition and
assert the INTERRUPT pin.
Table 4. Monitor Channel FS and LSB Detail
Measuring APC and Laser Parameters—BMD,
IBIASMON, RSSI
BMD and BIASSET are used to control and monitor the
laser functionality. Regardless of the set BMD current in
the APC register, the DS1862A measures BMD pin cur-
rent and uses this value not only to adjust the current
on the BIASSET pin, but also to monitor TX-P as well.
The IBIASMON pin is used to input a voltage signal to
the DS1862A that can be used to monitor the bias cur-
rent through the laser. This monitor channel does not
drive the HIGH BIAS quick-trip (QT) alarms for safety
SIGNAL
Temperature
V CC2/3
IBIASMON
RSSI
AUX1MON
AUX2MON
BMD (TX-P)
+FS SIGNAL
127.984°C
6.5528V
2.4997V
2.4997V
6.5528V
6.5528V
1.5mA
+FS (hex)
7FF8
FFF8
FFF8
FFF8
FFF8
FFF8
FFF8
-FS SIGNAL
-120°C
0V
0V
0V
0V
0V
0mA
-FS (hex)
8800
0000
0000
0000
0000
0000
0000
LSB
0.0625°C
100 μV
38.147μV
38.147μV
38.147μV
38.147μV
22.888nA
______________________________________________________________________________________
17
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相关代理商/技术参数 |
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|---|---|
| DS1862AB+ | 功能描述:激光驱动器 XFP Laser Control & Digital Diagnostic RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| DS1862AB+T&R | 制造商:Maxim Integrated Products 功能描述:XFP LASER CONTROL 25CSBGA - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LASR CTRLR 7CHAN 5.5V 25CSBGA |
| DS1862AB+T&R | 功能描述:激光驱动器 XFP Laser Control & Digital Diagnostic RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| DS1862AB+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:XFP Laser Control and Digital Diagnostic IC |
| DS1862B | 功能描述:激光驱动器 RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
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