ADC128S102_14 Datasheet, PDF (1/25 Pages) Texas Instruments – 8-Channel, 500 ksps to 1 Msps, 12-Bit A/D Converter

ADC128S102
www.ti.com
SNAS298D – AUGUST 2005 – REVISED JANUARY 2011
ADC128S102 8-Channel, 500 ksps to 1 Msps, 12-Bit A/D Converter
Check for Samples: ADC128S102
FEATURES
1
•234 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
DESCRIPTION
The ADC128S102 is a low-power, eight-channel CMOS 12-bit analog-to-digital converter specified for conversion
throughput rates of 500 ksps to 1 MSPS. 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 ADC128S102 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 2.3 mW and 10.7 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 ADC128S102 is packaged in a 16-lead TSSOP package. Operation over the extended industrial
temperature range of −40°C to +105°C is guaranteed.
Conversion Rate
DNL (V_A = V_D = 5.0 V)
INL (V_A = V_D = 5.0 V)
Power Consumption
Table 1. Key Specifications
3V Supply
5V Supply
VALUE
500 ksps to 1
+1.5 / −0.9
±1.2
UNIT
MSPS
LSB (max)
LSB (max)
2.3
mW (typ)
10.7
mW (typ)
Connection Diagram
CS
V_A
AGND
IN0
IN1
IN2
IN3
IN4
1
16
2
15
3
14
4
13
ADC128S102
5
12
6
11
7
10
8
9
SCLK
DOUT
DIN
V_D
DGND
IN7
IN6
IN5
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
MICROWIRE is a trademark of Texas Instruments.
2
SPI, QSPI are trademarks of Motorola, Inc..
3
All other trademarks are the property of their respective owners.
4
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 © 2005–2011, Texas Instruments Incorporated