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ADC141S626CIMM/NOPB
14-Bit, 50 kSPS to 250 kSPS, Differential Input, Micro Power A/D Converter
ADC141S626
www.ti.com SNAS434B–NOVEMBER 2007–REVISED MARCH 2013
ADC141S626 14-Bit, 50 kSPS to 250 kSPS, Differential Input, Micro Power A/D Converter
Checkfor Samples: ADC141S626
1FEATURES
DESCRIPTION True Differential Inputs The ADC141S626isa 14-bit, 50 kSPSto 250 kSPS
• Guaranteed Performance from 50 kSPSto 250 sampling Analog-to-Digital (A/D) converter. The
kSPS converteris based ona successive-approximation
External Reference register (SAR) architecture where the differential
natureof the analog inputsis maintained from the
• Zero-Power Track Mode internal sample-and-hold circuits throughout the A/D
• Wide Input Common-Mode Voltage Range converterto provide excellent common-mode signal
• Operating Temperature Rangeof −40°Cto rejection. The ADC141S626 features an external
+85°C reference that can be varied from 1.0Vto VA.It also
featuresa zero-power track mode where the ADCis
• SPI™/QSPI™/MICROWIRE/DSP Compatible consuming the minimum amount of supply current
Serial Interface while the internal sampling capacitoris tracking the
applied analog input voltage.
APPLICATIONSThe serial data outputis binary 2's complement and
• Automotive Navigation is compatible with several standards, suchas SPI™,
• Portable Systems QSPI™, MICROWIRE, and many common DSP
serial interfaces. The conversion resultis clocked out
• Medical Instruments the serial clock input andis the result of the
• Instrumentation and Control Systems conversion currentlyin progress; thus, ADC141S626
• Motor Control hasno latency.
Direct Sensor Interface The ADC141S626 maybe operated with independent
analog (VA) and digital input/output (VIO) supplies. VA
KEY SPECIFICATIONS and VIO can range from 2.7Vto 5.5V and can be set
independentof each other. This allowsa userto
• Conversion Rate:50 kSPSto 250 kSPSmaximize performance and minimize power
• INL:± 0.95 LSB (Max) consumption by operating the analog portionof the
• DNL:± 0.95 LSB (Max) ADCata VAof 5V while communicating witha 3V
SNR:82 dBc (Max) controller on the digital side. Witha 3V source, the
power consumption when operatingat 200 kSPSis
• THD: -90 dBc (Typ) 2.0 mW. Witha 5V source, the power consumption when operatingat 250 kSPSis 4.8 mW. The power consumption drops down to4µ W and 13µ W
respectively when the ADC141S626 enters
mW acquisition (power-down) mode. The differential input, and small size make the for direct connectionto bridge
sensors and transducers systems or remote data acquisition
Operationis guaranteed the temperature −40°Cto +85°C and clockof MHz
MHz. The ADC141S626
VSSOP package.
