Features

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12-bit SAR architecture

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1 Msps conversion rate

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8-to-1-channel input MUX

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3.3 V operating supply

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SPI, serial digital output

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Power-down function

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Nickel/palladium/gold-lead-finished (NiPdAu), whisker-free

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Gold-wires

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RML <1% and CVCM <0.1% guaranteed outgassing

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50 krad (Si) total ionizing dose

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SEL-free up to 62.5 MeV.cm²/mg

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Mass: 80 mg

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Compliant with ST-LEO-specification

Application

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Low earth orbit (LEO) applications, telemetry, housekeeping

Description

The LEOAD128 is a low power, multiplexed 8-input pure CMOS 12-bit analog-to-

digital converter specified for conversion from 50 ksps to 1 Msps. The architecture

is based on a successive-approximation register with internal track-and-hold. The

output serial data is straight binary and is compatible with SPI™.

The analog and digital power supplies operate from 2.7 V to 3.6 V, drawing a current

consumption of only 2 mA maximum.

The LEOAD128 can operate over a large temperature range of -40 °C to +125

°C and it is housed in plastic TSSOP-20, thin-shrink small outline package, 20

leads, using golden bonding and nickel/palladium/golden-lead-finishing to prevent

from whiskers.

The LEOAD128 is compliant with the ST-LEO-specification, dedicated specification

for space-ready rad-hard plastic products. This AEC-Q100-based specification offers

a specific trade-off among footprint size savings, cost of ownership and quality

assurance together with radiation hardness and large quantity capability.

Product status link

LEOAD128

Rad-hard plastic 8-channel, 1 Msps 12-bit ADC

LEOAD128

Datasheet

DS13668 - Rev 2 - September 2021

For further information contact your local STMicroelectronics sales office.

www.st.com