1FEATURES
2• 16-Bit Resolution
• 13-Bit Linearity
• ±2.3V Specified Input Voltage Range
• Internal Reference Voltage: 2%
• Gain Error: 0.5%
• Two Independent Delta-Sigma Modulators
• Two Input Reference Buffers
• On-Chip Oscillator
• Selectable Internal or External Clock
• Specified Temperature Range:
–40°C to +105°C
• TSSOP-24 Package

APPLICATIONS
• Motor Control
• Current Measurement
• Resolver
• Industrial Process Control
• Instrumentation

DESCRIPTION
The ADS1209 is a two-channel, high-performance,
delta-sigma (ΔΣ) modulator with an 86dB dynamic
range, operating from a single +5V supply. The
differential inputs are ideal for direct connection to
signal sources in an industrial environment. With the
appropriate digital filter and modulator rate, the
device can be used to achieve 16-bit analog-to-digital
A/D) conversion with no missing codes. Effective
accuracy of 14 bits can be obtained with a digital filter
bandwidth of 20kHz at a modulator rate of 10MHz.
The ADS1209 is designed for use in high-resolution
measurement applications including current
measurements, industrial process control, and
resolvers. It is available in a TSSOP-24 package and
is specified for operation over the ambient
temperature range of –40°C to +105°C.