AMC8V208中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

1 Features

? Six 16-bit current output DACs (IDACs)

– Programmable full-scale output ranges: 250mA,

150mA, 75mA

– IDAC1 current sink option: –60mA

? Two 16-bit current output DACs optimized for high

current generation (IDAC+)

– IDAC internal mode with programmable fullscale

ranges: 250mA, 150mA, 75mA

– IDAC+ mode with external FET option for high

current generation.

? MUXOUT pin to monitor internal voltage and

current using external ADC

? Internal 2.5V reference

– AMC8V208: 25ppm/°C

– AMC8V108: 100ppm/°C

? Thermal shutdown at 150°C

? Selectable SPI and I2C interfaces: 1.1V to 1.95V

operation

? Operating junction temperature: –40°C to +125°C

2 Applications

? Optical module

3 Description

The AMC8V108 and AMC8V208 (AMC8Vx08) are

highly integrated current-output controllers optimized

for optical networking applications.

The AMC8Vx08 include six dedicated 16-bit currentoutput

digital-to-analog converters (IDACs), and two

16?bit IDACs that can be configured to control

high-output current generation circuits (IDAC+).

The AMC8Vx08 also include a MUXOUT pin for

monitoring the voltage and current on the currentoutput

pins. An integrated high-precision internal

reference eliminates the need for an external

reference in most applications.

The IDAC outputs support full-scale output ranges

of 250mA, 150mA, and 75mA, as well as an output

range of –60mA (sink mode) supported on IDAC1

only. The IDAC+ outputs in internal current-output

mode also support full-scale output ranges of 250mA,

150mA, and 75mA. Additionally, the IDAC+ outputs

can be configured to operate with an external FET

and sense resistor to simplify the design of very highcurrent

outputs.

The IDAC and IDAC+ outputs operate from

independent power supplies with a 275mV minimum

headroom for power-dissipation optimization.