(ACTIVE) 10-Bit, 38 kSPS ADC Serial Out, On-Chip System Clock, 11 Ch.


Functional Diagram


The TLC1542C, TLC1542I, TLC1542M, TLC1542Q, TLC1543C, TLC1543I, and TLC1543Q are CMOS 10-bit switched-capacitor successive-approximation analog-to-digital converters. These devices have three inputs and a 3-state output [chip select (CS), input-output clock (I/O CLOCK), address input (ADDRESS), and data output (DATA OUT)] that provide a direct 4-wire interface to the serial port of a host processor. These devices allow high-speed data transfers from the host.

In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip 14-channel multiplexer that can select any one of 11 analog inputs or any one of three internal self-test voltages. 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 complete. The converter incorporated in the devices features differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and isolation of analog circuitry from logic and supply noise. A switched-capacitor design allows low-error conversion over the full operating free-air temperature range.


  • 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 Technology


Resolution (Bits) 10    
Sample Rate (Max) (kSPS) 38    
Number of input channels 11    
Interface SPI    
Operating Temperature Range (C) -40 to 125^0 to 70    
Package Group PDIP|20^PLCC|20^SOIC|20^SSOP|20    
Approx. price (US$) 1.96 | 1ku    
Power Consumption (Typ) (mW) 4    
Package Size: mm2:W x L (PKG) See datasheet (PDIP)^20PLCC: 98 mm2: 9.9 x 9.9 (PLCC|20)^20SOIC: 132 mm2: 10.3 x 12.8 (SOIC|20)^20SSOP: 56 mm2: 7.8 x 7.2 (SSOP|20)    
Architecture SAR    
Input Type Single-Ended    
Multi-Channel Configuration Multiplexed    
Reference Mode Ext    
Features N/A    
Input Range (Max) (V) 5.5    
Input Range (Min) (V) 0    
Analog voltage AVDD (Min) (V) 4.5    
Analog voltage AVDD (Max) (V) 5.5    
Digital Supply (Min) (V) 4.5    
Digital Supply (Max) (V) 5.5    
INL (Max) (+/-LSB) 1    
SINAD (dB)  
SNR (dB)  
Rating Catalog    

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