参数资料
型号: SPT574CCN
厂商: SIGNAL PROCESSING TECHNOLOGIES
元件分类: ADC
英文描述: 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP28
封装: PLASTIC, DIP-28
文件页数: 1/12页
文件大小: 113K
代理商: SPT574CCN
SPT574
FAST, COMPLETE 12-BIT
P COMPATIBLE
A/D CONVERTER WITH SAMPLE/HOLD
FEATURES
Improved Version of the HADC574Z
Complete 12-Bit A/D Converter with Sample/Hold,
Reference and Clock
Low Power Dissipation (100 mW Max)
12-Bit Linearity (Over Temp)
25
s Max Conversion Time
Single +5 V Supply
Full Bipolar and Unipolar Input Range
APPLICATIONS
Data Acquisition Systems
8 or 12-Bit
P Input Functions
Process Control Systems
Test and Scientific Instruments
Personal Computer Interface
GENERAL DESCRIPTION
The SPT574 is a complete, 12-bit successive approximation
A/D converter manufactured in CMOS technology. The de-
vice is an improved version of the HADC574Z. Included on
chip are an internal reference, clock, and a sample-and-hold.
The S/H is an additional feature not available on similar
devices.
The SPT574 features 25
s (max) conversion time of 10 or
20 V input signals. Also, a three-state output buffer is added
for direct interface to an 8, 12, or 16-bit
P bus.
The SPT574 has standard bipolar and unipolar input ranges
of 10 V and 20 V that are controlled by a bipolar offset pin and
laser trimmed for specified linearity, gain and offset accuracy.
The power supply is +5 V. The device also has an optional
mode control voltage which may be used depending on the
application. With a maximum dissipation of 100 mW at the
specified voltages, power consumption is about five times
lower than that of currently available devices.
The SPT574 is available in 28-lead ceramic sidebrazed DIP,
PDIP and SOIC packages in the commercial temperature
range.
BLOCK DIAGRAM
Three-State Buffers And Control
Nibble A
Nibble B
Nibble C
12-Bit SAR
+
-
Comp
Clock
Offset/Gain
Trim
Control Logic
12-Bit
Capacitance
DAC
STS
AoCE
AGND
20 V In
12/8
CS
R/C
Ref
Ref Out
10 V In
BIP Off
Output
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300
FAX: (719) 528-2370
Website: http://www.spt.com
E-Mail: sales@spt.com
相关PDF资料
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