TS2043

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 8

www.unisonic.com.tw

QW-R502-404.a

APPLICATION INFORMATION

OVERVIEW

The UTC TS2043 is a 12-bit switched-capacitor Analog-to-Digital (A/D) converter and incorporates four channel

inputs, a serial interface, and low on-resistance switches for touch panel.. It supplies from a single supply varying from

+2.7V to +5.5V. It requires an external reference, which is directly limiting the input range of the converter. The

four-channel multiplexer contained in the circuit decides the input to this converter (See Figure 1). In addition, an

external clock is also required.

OPERATION OF 24-CLOCKS

The UTC TS2043 communicates with microprocessors or digital signal processors through a synchronous

serial interface. For a total 24 clock cycles on the DCLK input, three serial communications are needed to complete

one conversion. (See Figure 2)

Acquire

ON

Conversion

1

1

8

1

/CS

DCLK

X/Y

SWITGH

DIN

BUSY

DOUT

Tri-State

Tri-State

Start

11

(MSB)

(LSB)

0

Tri-State

Tri-State

Figure 2. Serial Interface of TS2043