TPAFEA003B

High Precision Silicon Photonic AFE with 4 IDACs, 12 VDACs and Multi-channel ADC

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概述

The TPAFEA003B is a highly integrated controller and monitor optimzed for silicon photonics module. The TPAFEA003B include four 12-bit current output DACs (IBIAS), twelve 12-bit voltage output DACs (Heater Bias), up to 29 channels multi-IO and a 12-bit, 500-kSPS ADC. The TPAFEA003B also include four 12-bit general purpose DACs (GDAC) and four analog comparators.

The IBIAS in TPAFEA003B support a full-scale output range of 500mA per channel, and support using in multichannel parallel mode, providing sufficient bias current for the lasers of silicon photonic modules. The IBIAS power supply voltage pin supports a voltage range of 0.5 V to 2.5 V, and the power supply voltage drop from PVDD to IBIAS pin can be as low as 150mV under 350mA output. For lasers of different specifications, it can achieve very high system efficiency and excellent temperature performance. The IBIAS is also capable of fast shutting down by external hardware pins EN_IBIAS 0 to 3.

The Heater Bias in TPAFEA003B provides both current source and sink capability, with a maximum current of ±60mA per channel, make it suitable for DC bias of MachZehnder modulators (MZM). Additionally, the power supply of Heater Bias, VDRIVE0 and VDRIVE1, are not limited by VDD, and VDRIVE0 and VDRIVE1 can be different from each other.

The ADC in TPAFEA003B is a 500 kSPS SAR ADC with up to 29 channels. Which can be used as current measurement of monitor photodoide (mPD), received signal shrength indicator (RSSI) or other voltage or current monitoring. The equal current measurement full scale range is from 50 μA to 10 mA. Most of the ADC channels include current mirrors with a 1 : 1 or 1 : 3 current ratio. The current mirror eliminates the need for external pull-down resistors for the mPD and support both common cathod and common anode topologies. The ADC also provides 16 channels software alarm with programable threshold. Besides, the TPAFEA003B also support external ADC measurement.

The analog comparators in TPAFEA003B is for the fast loss of signal (LOS) report, and the GDACs can be use as either comparator reference inputs or general purpose DAC outputs.

The TPAFEA003B is featured with small size and high integration, wide supply range and operating temperature range, which make the device an excellent choice for high speed silicon-photonics modules.

Status

Preview
Rating

Industrial
ADC Input Channel

29
ADC Resolution (Bits)

12
ADC Input Range (V)

0~VREF,0~2*VREF
DAC Channel

16
DAC Resolution (Bits)

12
DAC Output Type

4 Voltage,12 Current
DAC Output Range

Voltage: 5V,2.5V,2.5V,5V Current: 350，500mA
GPIO Number

21
VREF

Internal
Temperature Sensor

NA
Interface

SPI/I2C
Features

4 IDACs,12 VDACs，21MIO
Temperature Range (℃)

-40 to +125
Package

WLCSP

开发资源

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- 思瑞浦模拟产品选型册
  
  选型手册
  
  中文
  
  03/06/2026
- Datasheet_TPAFEA003B
  
  数据手册
  
  英文
  
  06/18/2026
  
  High Precision Silicon Photonic AFE with 4 IDACs, 12 VDACs and Multi-channel ADC
- Introduction to Latch-up and the Preventive Measures
  
  技术文章
  
  英文
  
  01/19/2024
- Introduction to ESD Performance of a Silicon Chip
  
  技术文章
  
  英文
  
  01/19/2024
- Application Tips on ESD-EOS
  
  技术文章
  
  英文
  
  01/19/2024