ADC161S626_14 Datasheet, PDF (1/30 Pages) Texas Instruments – ADC161S626 16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC

ADC161S626
www.ti.com
SNAS468B – SEPTEMBER 2008 – REVISED MAY 2009
ADC161S626 16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC
Check for Samples: ADC161S626
FEATURES
1
•2 16-bit resolution with no missing codes
• Guaranteed performance from 50 to 250 kSPS
• ±0.003% signal span accuracy
• Separate Digital Input/Output Supply
• True differential input
• External voltage reference range of +0.5V to V_A
• Zero-Power Track Mode with 0 µsec wake-up
delay
• Wide input common-mode voltage range of 0V
to V_A
• SPI™/QSPI™/MICROWIRE™ compatible Serial
Interface
• Operating temperature range of −40°C to
+85°C
• Small MSOP-10 package
APPLICATIONS
• Direct Sensor Interface
• I/O Modules
• Data Acquisition
• Portable Systems
• Motor Control
• Medical Instruments
• Instrumentation and Control Systems
DESCRIPTION
The ADC161S626 is a 16-bit successive-approximation register (SAR) Analog-to-Digital converter (ADC) with a
maximum sampling rate of 250 kSPS. The ADC161S626 has a minimum signal span accuracy of ± 0.003% over
the temperate range of −40°C to +85°C. The converter features a differential analog input with an excellent
common-mode signal rejection ratio of 85 dB, making the ADC161S626 suitable for noisy environments.
The ADC161S626 operates with a single analog supply (V_A) and a separate digital input/output (V_IO) supply. V_A
can range from +4.5V to +5.5V and V_IO can range from +2.7V to +5.5V. This allows a system designer to
maximize performance and minimize power consumption by operating the analog portion of the ADC at a V_A of
+5V while interfacing with a +3.3V controller. The serial data output is binary 2's complement and is SPI™
compatible.
The performance of the ADC161S626 is guaranteed over temperature at clock rates of 1 MHz to 5 MHz and
reference voltages of +2.5V to +5.5V. The ADC161S626 is available in a small 10-lead MSOP package. The high
accuracy, differential input, low power consumption, and small size make the ADC161S626 ideal for direct
connection to bridge sensors and transducers in battery operated systems or remote data acquisition
applications.
Conversion Rate
DNL
INL
Offset Error Temp Drift
Gain Error Temp Drift
SNR
THD
Power Consumption
Table 1. Key Specifications
VALUE
50 kSPS to 250 kSPS
+ 0.8 / − 0.5
± 0.8
2.5 µV/°C
0.3 ppm/°C
93.2
− 104
10 kSPS, 5V
0.24
200 kSPS, 5V
5.3
UNIT
LSB
LSB
dBc
dBc
mW
mW
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2009, Texas Instruments Incorporated