Features: 10-Bit Resolution A/D Converter
11 Analog Input Channels
Three Built-In Self-Test Modes
Inherent Sample-and-Hold Function
Total Unadjusted Error . . . ±1 LSB Max
On-Chip System Clock
End-of-Conversion (EOC) Output
Terminal Compatible With TLC542
CMOS TechnologyPinout
SpecificationsSupply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 6.5 V
Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.3 V
Output voltage range, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.3 V
Positive reference voltage, Vref+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC + 0.1 V
Negative reference voltage, Vref . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 V
Peak input current (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Peak total input current (all inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 mA
Operating free-air temperature range, TA: TLC1542C, TLC1543C . . . . . . . . . . . . . . . . . . . . . . . 0 to 70
TLC1542I, TLC1543I . . . . . . . . . . . . . . . . . . . . . . . . 40 to 85
TLC1542Q, TLC1543Q . . . . . . . . . . . . . . . . . . . . . 40 to 125
TLC1542M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 125
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to 150
Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and unctional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not mplied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to digital ground with REF and GND wired together (unless otherwise noted).
DescriptionThe TLC1542C, TLC1542I, TLC1542M, TLC1542Q, LC1543C, TLC1543I, and TLC1543Q are CMOS 0-bit switched-capacitor successive-approximation nalog-to-digital converters. These devices have three nputs and a 3-state output [chip select (CS), nput-output clock (I/O CLOCK), address input ADDRESS), and data output (DATA OUT)] that rovide a direct 4-wire interface to the serial port of a ost processor. These devices allow high-speed data ransfers from the host. n addition to a high-speed A/D converter and versatile ontrol capability, these devices have an on-chip 4-channel multiplexer that can select any one of 11 nalog inputs or any one of three internal self-test oltages. The sample-and-hold function is automatic.
At the end of A/D conversion, the end-of-conversion EOC) output goes high to indicate that conversion is omplete. The converter incorporated in the devices eatures differential high-impedance reference inputs hat facilitate ratiometric conversion, scaling, and solation of analog circuitry from logic and supply noise.
A switched-capacitor design allows low-error conversion ver the full operating free-air temperature range.
LC1542Q Data Sheet
