AMC60804T 4-Channel Optical Monitor and Controller

With Current and Voltage Output DACs and Multichannel ADC

1 Features

• Four 12-bit current output DACs (IDACs)

– 200-mA full-scale output range

– Low supply headroom: 200 mV at 200 mA

• Four 12-bit voltage output DACs (VDACs)

– Selectable full-scale output ranges:

–5 V, –2.5 V, +2.5 V and +5 V

– High-current drive capability: ±50 mA

• Multichannel, 12-bit, 1-MSPS SAR ADC

– Four external inputs: 2.5-V and 5-V ranges

– Four IDAC voltage monitor channels

– Four VDAC current monitor channels

– Programmable sequencer

– Programmable out-of-range alarms

• Internal 2.5-V reference

• Supply and temperature fault alarms

• SPI and I2C interfaces: 1.7-V to 3.6-V operation

– SPI: 4-wire interface

– I2C: Four target addresses

• Specified temperature range: –40°C to +125°C

2 Applications

• Optical module

• Intra-DC interconnect (metro)

IDAC

ADC

MUX

× 4

× 4

Reference

SPI or I

2C

Serial Interface

AMC60804T

IDAC1

Supply and Temperature Monitors

Interrupt Control

and

Alarm Detector

IDAC Channels 1–4

Voltage

Monitors

IDAC2

IDAC3

IDAC4

VDAC

VDAC1

VDAC Channels 1–4

Current

Monitors

VDAC2

VDAC3

VDAC4

ADC1

ADC2

ADC3

ADC4

Simplified Schematic

3 Description

The AMC60804T is a highly integrated, low-power

analog monitor and controller for optical transceiver

applications.

The AMC60804T includes four 12-bit current output

digital-to-analog converters (IDACs) and four 12-bit

voltage output DACs (VDACs) with programmable

output ranges. The device also includes a 12-bit,

1-MSPS analog-to-digital converter (ADC) used for

external and internal signal monitoring, supply and

temperature alarm monitors, and a high-precision

internal reference.

The AMC60804T VDACs support both positive and

negative output-range operation and are capable or

sourcing and sinking up to 50 mA, making them

an excellent choice for biasing optical modulators.

Additionally, the AMC60804T IDACs support a full-

scale output range of 200 mA with very-low power

dissipation. The IDACs eliminate the need for external

components to bias laser diodes. In combination,

the AMC60804T four VDACs and four IDACs enable

accurate biasing of electro-absorption modulated

lasers.

The AMC60804T also includes four input pins that

are multiplexed to the ADC and incorporate a low-

latency window comparator. These features make this

device an excellent choice for received signal strength

indicator (RSSI) and loss-of-signal (LOS) detection.

The ADC is also capable of measuring the voltage at

the IDAC pins, as well as the current being sourced or

sinked by the VDACs, thus enabling these outputs to

be monitored.

The AMC60804T low power, high integration, very

small size, and wide operating temperature range

make this device an excellent choice as an all-in-one

control circuit for optical modules.

Package Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

AMC60804T

YBH (DSBGA, 36)

2.56 mm × 2.56 mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

AMC60804T

SLASF79 – JANUARY 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.