ADC121S655,ADC121S655CIMM,ADC121S655CIMMX,ADC121S705EB

Part No.:
ADC121S655,ADC121S655CIMM,ADC121S655CIMMX,ADC121S705EB
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Description:
12-Bit, 200 kSPS to 500 kSPS, Differential Input, Micro Power A/D Converter
File Size:
534 K
Page:
22 Pages
Logo:
Maker:
NSC [ NATIONAL SEMICONDUCTOR ]
PCB Prototype

July 19, 2018:

ADN4694E

ADP3303ARZ-3.3

ADS1198

ADS54T01

ADSP-21366SKBC-ENG

ADT7302ARTZ-REEL7

ADT7485AARMZ-REEL7

ADUM5400CRWZ2

ADV7850KBCZ-5

AEQ75Y48N-63

AEZ1000RE

AK8130A

PCB Datasheet:1PCB Datasheet:1
ADC121S655 12-Bit, 200 kSPS to 500 kSPS, Differential Input, Micro Power A/D Converter
May 2007
ADC121S655
12-Bit, 200 kSPS to 500 kSPS, Differential Input, Micro
Power A/D Converter
General Description
The ADC121S655 is a 12-bit, 200 kSPS to 500 kSPS sam-
pling Analog-to-Digital (A/D) converter that features a fully
differential, high impedance analog input and an external ref-
erence. The reference voltage can be varied from 1.0V to
V
A
, with a corresponding resolution between 244µV and V
A
divided by 4096.
The output serial data is binary 2's complement and is com-
patible with several standards, such as SPI™, QSPI™, MI-
CROWIRE™, and many common DSP serial interfaces. The
differential input, low power consumption, and small size
make the ADC121S655 ideal for direct connection to trans-
ducers in battery operated systems or remote data acquisition
applications.
Operating from a single 5V supply, the supply current when
operating at 500 kSPS is typically 1.8 mA. The supply current
drops down to 0.3 µA typically when the ADC121S655 enters
power-down mode. The ADC121S655 is available in the
MSOP-8 package. Operation is guaranteed over the indus-
trial temperature range of −40°C to +105°C and clock rates
of 3.2 MHz to 8 MHz.
Features
True Differential Inputs
Guaranteed performance from 200 kSPS to 500 kSPS
External Reference
Wide Input Common-Mode Voltage Range
SPI™/QSPI™/MICROWIRE™/DSP compatible Serial
Interface
Key Specifications
Conversion Rate
INL
DNL
Offset Error
Gain Error
SINAD
Power Consumption at V
A
= 5V
Active, 500 kSPS
Active, 200 kSPS
Power-Down
200 kSPS to 500 kSPS
± 0.95 LSB (max)
± 0.85 LSB (max)
± 3.0 LSB (max)
± 5.5 LSB (max)
70 dB (min)
9 mW (typ)
7 mW (typ)
1.5 µW (typ)
Applications
Automotive Navigation
Portable Systems
Medical Instruments
Instrumentation and Control Systems
Motor Control
Direct Sensor Interface
Pin-Compatible Alternatives by Speed
All devices are pin compatible.
Resolution
50 to 200 ksps
12-bit
ADC121S625
Specified for Sample Rate Range of:
200 to 500 ksps
ADC121S655
500 ksps to 1 Msps
ADC121S705
Connection Diagram
30010505
TRI-STATE® is a trademark of National Semiconductor Corporation.
MICROWIRE™ is a trademark of National Semiconductor Corporation.
QSPI™ and SPI™ are trademarks of Motorola, Inc.
© 2007 National Semiconductor Corporation
300105
www.national.com