Series: -
Number of Converters: 1
Voltage Supply Source: Single Supply
Number of Inputs and Type: 1 Single-Ended, Unipolar
Number of Bits: 12
Packaging: Tube
Mounting Type: Through Hole
Operating Temperature: 0°C ~ 70°C
Data Interface: Parallel
Sampling Rate (Per Second): 250k
Power Dissipation (Max): 75mW
Package / Case: 24-DIP (0.300", 7.62mm)
Supplier Device Package: 24-PDIP
Manufacturer: Linear Technology
Features: AD7572 Pinout
12-Bit Resolution
3ms and 8ms Conversion Times
On-Chip Sample-and-Hold
Up to 250kHz Sample Rates
5V Single Supply Operation
No Negative Supply Required
On-Chip 25ppm/°C Reference
75mW (Typ) Power Consumption
24-Pin Narrow DIP and SOL Packages
ESD Protected on All PinsApplication High Speed Data Acquisition
Digital Signal Processing (DSP)
Multiplexed Data Acquisition Systems
Single Supply SystemsPinout
SpecificationsSupply Voltage (VDD) ................................................. 6V
Analog Input Voltage (Note 3) ...................0.3V to 15V
Digital Input Voltage ..................................0.3V to 12V
Digital Output Voltage .................... 0.3V to VDD + 0.3V
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC1272-XAC, CC ...................................... 0°C to 70°C
Storage Temperature Range ................65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Description
The LTC1272 is a 3ms, 12-bit, successive approximation sampling A/D converter. It has the same pinout as the industry standard AD7572 and offers faster conversion time, on-chip sample-and-hold, and single supply operation. It uses LTBiCMOSTM switched-capacitor technology to combine a high speed 12-bit ADC with a fast, accurate sample-and-hold and a precision reference. The LTC1272 operates with a single 5V supply but can also accept the 5V/15V supplies required by the AD7572 (Pin 23, the negative supply pin of the AD7572, is not connected on the LTC1272).
The LTC1272 has the same 0V to 5V input range as the AD7572 but, to achieve single supply operation, it provides a 2.42V reference output instead of the 5.25V of the AD7572. It plugs in for the AD7572 if the reference capacitor polarity is reversed and a 1ms sampleand- hold acquisition time is allowed between conversions. The output data can be read as a 12-bit word or as two 8-bit bytes. This allows easy interface to both 8-bit and higher processors.
The LTC1272 can be used with a crystal or an external clock and comes in speed grades of 3ms and 8ms.
Parameters:
| Technical/Catalog Information | LTC1272-3CCN |
| Vendor | Linear Technology |
| Category | Integrated Circuits (ICs) |
| Number of Bits | 12 |
| Package / Case | 24-DIP (300 mil) |
| Data Interface | Parallel |
| Packaging | Tube |
| Sampling Rate (Per Second) | 250k |
| Operating Temperature | 0°C ~ 70°C |
| Voltage Supply Source | Single |
| Number of Inputs and Type | 1 Single-Ended, Unipolar |
| Number of Converters | 1 |
| Power Dissipation (Max) | 75mW |
| Drawing Number | 161; 05-08-1510; N; 8 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | LTC1272 3CCN
LTC12723CCN
|
LTC1272-3CCN Data Sheet
