ADC128S022_15 Datasheet, PDF (1/29 Pages) Texas Instruments – 8-Channel, 50 kSPS to 200 kSPS, 12-Bit A/D Converter

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ADC128S022
SNAS334F – AUGUST 2005 – REVISED NOVEMBER 2015
ADC128S022 8-Channel, 50 kSPS to 200 kSPS, 12-Bit A/D Converter
1 Features
•1 Eight Input Channels
• Variable Power Management
• Independent Analog and Digital Supplies
• SPI™/QSPI™/MICROWIRE/DSP Compatible
• Packaged in 16-lead TSSOP
• Conversion Rate: 50 ksps to 200ksps
• DNL (V_A = V_D = 5 V): +1 / −0.7 LSB (Maximum)
• INL (V_A = V_D = 5 V): ±1 LSB (Maximum)
• Power Consumption
– 3V Supply: 1.2 mW (Typical)
– 5V Supply: 7.5 mW (Typical)
2 Applications
• Automotive Navigation
• Portable Systems
• Medical Instruments
• Mobile Communications
• Instrumentation and Control Systems
3 Description
The ADC128S022 device is a low-power, eight-
channel CMOS 12-bit analog-to-digital converter
specified for conversion throughput rates of 50 ksps
to 200 ksps. The converter is based on a successive-
approximation register architecture with an internal
track-and-hold circuit. It can be configured to accept
up to eight input signals at inputs IN0 through IN7.
The output serial data is straight binary and is
compatible with several standards, such as SPI,
QSPI, MICROWIRE, and many common DSP serial
interfaces.
The ADC128S022 may be operated with independent
analog and digital supplies. The analog supply (V_A)
can range from 2.7 V to 5.25 V, and the digital supply
(V_D) can range from 2.7 V to V_A. Normal power
consumption using a 3-V or 5-V supply is 1.2 mW
and 7.5 mW, respectively. The power-down feature
reduces the power consumption to 0.06 µW using a
3-V supply and 0.25 µW using a 5-V supply.
The ADC128S022 is packaged in a 16-lead TSSOP
package. Operation over the extended industrial
temperature range of −40°C to +105°C is ensured.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADC128S022
TSSOP (16)
4.40 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
VA is used as the
³$QDORJ´ 6XSSO\ 5DLO ^{Reference for the ADC}
VD can be set
independently of VA
³'LJLWDO´ 6XSSO\ 5DLO
VIN7
VIN3
VIN0
VA
VD
IN7
IN6
IN5
IN4
SAR
ADC
IN3
4-wire SPI
IN2
IN1
IN0
AGND
DGND
MCU
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.