ADC124S051_15 Datasheet, PDF (1/28 Pages) Texas Instruments – 12-Bit A/D Converter

ADC124S051
www.ti.com
SNAS260E – NOVEMBER 2004 – REVISED NOVEMBER 2004
ADC124S051 4 Channel, 200 ksps to 500 ksps, 12-Bit A/D Converter
Check for Samples: ADC124S051
FEATURES
1
•2 Specified Over a Range of Sample Rates
• Four Input Channels
• Variable Power Management
• Single Power Supply with 2.7V - 5.25V Range
KEY SPECIFICATIONS
• DNL: +0.7 / −0.4 LSB (typ)
• INL: ± 0.5 LSB (typ)
• SNR: 72.5 dB (typ)
• Power Consumption:
– 3V Supply: 3.0 mW (typ)
– 5V Supply: 10.0 mW (typ)
APPLICATIONS
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
DESCRIPTION
The ADC124S051 is a low-power, four-channel
CMOS 12-bit analog-to-digital converter with a high-
speed serial interface. Unlike the conventional
practice of specifying performance at a single sample
rate only, the ADC124S051 is fully specified over a
sample rate range of 200 ksps to 500 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 four input
signals at inputs IN1 through IN4.
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 ADC124S051 operates with a single supply that
can range from +2.7V to +5.25V. Normal power
consumption using a +3V or +5V supply is 3.0 mW
and 10.0 mW, respectively. The power-down feature
reduces the power consumption to just 0.14 µW using
a +3V supply, or 0.32 µW using a +5V supply.
The ADC124S051 is packaged in a 10-lead VSSOP
package. Operation over the industrial temperature
range of −40°C to +85°C is ensured.
Table 1. Pin-Compatible Alternatives by Resolution and Speed⁽¹⁾
Resolution
12-bit
10-bit
8-bit
50 to 200 ksps
ADC124S021
ADC104S021
ADC084S021
Specified for a Sample Rate Range of:
200 to 500 ksps
ADC124S051
ADC104S051
ADC084S051
500 ksps to 1 Msps
ADC122S101
ADC102S101
ADC082S101
(1) All devices are fully pin and function compatible.
Connection Diagram
CS
V_A
GND
IN4
IN3
1
10
2
9
ADC124S051
3
8
4
7
5
6
SCLK
DOUT
DIN
IN1
IN2
10 Pin VSSOP Package
See Package Number DGS
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.
All trademarks are the property of their respective owners.
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 © 2004, Texas Instruments Incorporated