TLC3548

Features:

*  14-Bit Resolution
*  Maximum Throughput 200 KSPS
*  Analog Input Range 0-V to Reference Voltage
*  Multiple Analog Inputs:
      8 Channels for TLC3548
      4 Channels for TLC3544
*  Pseudodifferential Analog Inputs
*  SPI/DSP-Compatible Serial Interfaces With SCLK up to 25 MHz
*  Single 5-V Analog Supply; 3-/5-V Digital Supply
*  Low Power:
      4 mA (Internal Reference: 1.8 mA) for Normal Operation
      20 µA in Autopower-Down
*  Built-In 4-V Reference, Conversion Clock and 8x FIFO
*  Hardware-Controlled and Programmable Sampling Period
*  Programmable Autochannel Sweep and Repeat
*  Hardware Default Configuration
* INL: ±1 LSB Max
* DNL:  ±1 LSB Max
* SINAD: 80.8 dB
* THD: 95 dB


Pinout




Specifications

Supply voltage, GND to AVDD, DVDD  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to 6.5 V
Analog input voltage range   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.2 V to AVDD +0.2 V
Analog input current  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . 100 mA MAX
Reference input voltage  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . AVDD + 0.3 V 
Digital input voltage range   . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 0.3 V to DVDD + 0.3 V
Operating virtual  junction temperature range, TJ   . . . . . . . . . . . . .  .. . . .40°C to  150°C
Operating free-air industrial temperature range, TA: I suffix   . . . . .  . . . . . 40°C to 85°C
                                                C suffix   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C to 150°C
Lead temperature 1,6 mm (1.16 inch) from case for 10 seconds. . . . . . . . . . . . . . . .  260°C


Description

The TLC3544 and TLC3548 are a family of 14-bit resolution high-performance, low-power, CMOS analog-to-digital converters (ADC). All devices operate from a single 5-V analog power supply and 3-V to 5-V digital supply. The serial interface consists of four digital inputs [chip select (CS), frame sync (FS), serial input-output clock (SCLK), serial data input (SDI)], and a 3-state serial data output (SDO). CS (works as SS, slave select), SDI, SDO, and SCLK form an SPI interface. FS, SDI, SDO, and SCLK form a DSP interface. The frame sync signal (FS) of TLC3548 indicates the start of a serial data frame being transferred. When multiple converters connect to one serial port of a DSP, CS works as the chip select to allow the host DSP to access the individual converter. CS of TLC3548 can be tied to ground if only one converter is used. FS must be tied to DVDD if it is not used (such as in an SPI interface). When SDI is tied to DVDD, the device is set in hardware default mode after power-on, and no software configuration is required. In the simplest case, only three wires of TLC3548 (SDO, SCLK, and CS or FS) are needed to interface with the host.