ADC128S022_14 Datasheet, PDF (1/26 Pages) Texas Instruments – ADC128S022 8-Channel, 50 kSPS to 200 kSPS, 12-Bit A/D Converter

ADC128S022
www.ti.com
SNAS334E – AUGUST 2005 – REVISED MARCH 2013
ADC128S022 8-Channel, 50 kSPS to 200 kSPS, 12-Bit A/D Converter
Check for Samples: ADC128S022
FEATURES
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•23 Eight Input Channels
• Variable Power Management
• Independent Analog and Digital Supplies
• SPI™/QSPI™/MICROWIRE™/DSP Compatible
• Packaged in 16-lead TSSOP
APPLICATIONS
• Automotive Navigation
• Portable Systems
• Medical Instruments
• Mobile Communications
• Instrumentation and Control Systems
KEY SPECIFICATIONS
• Conversion Rate: 50 ksps to 200ksps
• DNL (V_A = V_D = 5.0 V): +1.0 / −0.7 LSB (max)
• INL (V_A = V_D = 5.0 V): ±1.0 LSB (max)
• Power Consumption
– 3V Supply: 1.2 mW (typ)
– 5V Supply: 7.5 mW (typ)
DESCRIPTION
The ADC128S022 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 +2.7V to +5.25V, and the digital
supply (V_D) can range from +2.7V to V_A. Normal
power consumption using a +3V or +5V supply is 1.2
mW and 7.5 mW, respectively. The power-down
feature reduces the power consumption to 0.06 µW
using a +3V supply and 0.25 µW using a +5V 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.
Connection Diagram
CS
V_A
AGND
IN0
IN1
IN2
IN3
IN4
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16
2
15
3
14
4
13
ADC128S022
5
12
6
11
7
10
8
9
SCLK
DOUT
DIN
V_D
DGND
IN7
IN6
IN5
Figure 1. TSSOP
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI is a trademark of Motorola, Inc..
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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 © 2005–2013, Texas Instruments Incorporated