ADS1209SPW ,Two, 1-Bit, 10MHz, 2nd-Order Delta-Sigma Modulators with +/-2.3V specified input range 24-TSSOP -40 to 105FEATURES DESCRIPTION2• 16-Bit ResolutionThe ADS1209 is a two-channel, high-performance,delta-sigma ..
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ADS1209SPW
Two, 1-Bit, 10MHz, 2nd-Order Delta-Sigma Modulators with +/-2.3V specified input range
CHA+
AVDD
CHA-
Circuit
Oscillator
20MHz
Out EN
Clock
Select
Divider
REFINA
Reference
BVDD
2nd-Order Modulator
CHB+
CHB-
REFINB
ADS1209
www.ti.com SBAS491 –FEBRUARY 2010
Two 1-Bit, 10MHz, 2nd-Order
Delta-Sigma Modulators
Checkfor Samples: ADS1209
1FEATURES DESCRIPTION 16-Bit Resolution The ADS1209isa two-channel, high-performance,
delta-sigma (ΔΣ) modulator with an 86dB dynamic
• 13-Bit Linearityrange, operating froma single +5V supply. The
• ±2.3V Specified Input Voltage Range differential inputs are ideal for direct connectionto
• Internal Reference Voltage: 2% signal sourcesin an industrial environment. With the
Gain Error: 0.5% appropriate digital filter and modulator rate, the
device canbe usedto achieve 16-bit analog-to-digital
• Two Independent Delta-Sigma Modulators (A/D) conversion with no missing codes. Effective
• Two Input Reference Buffers accuracyof14 bits canbe obtained witha
On-Chip Oscillator bandwidthof 20kHzata modulator rate
The ADS1209is designed for usein high-resolution
• Selectable Internalor External Clock measurement applications including
• Specified Temperature Range: measurements, industrial process control,
–40°Cto +105°C resolvers.Itis availableina TSSOP-24 package
TSSOP-24 Package is specified for operation over the
temperature rangeof –40°Cto +105°C.
APPLICATIONS Motor Control Current Measurement Resolver Industrial Process Control Instrumentation
