12-Bit 200 kSPS ADC Ser. Out, Auto Pwrdn (S/W and H/W), Low Power W/8 x FIFO W/8 Ch. - TLV2548M

TLV2548M (ACTIVE)

12-Bit 200 kSPS ADC Ser. Out, Auto Pwrdn (S/W and H/W), Low Power W/8 x FIFO W/8 Ch.

 

Description

The TLV2544Q, TLV2548Q, and TLV2548M are a family of high performance, 12-bit low power, 3.5 µs, CMOS analog-to-digital converters (ADC) which operate from a single 3-V to 5.5-V power supply. These devices have three digital inputs and a 3-state output [chip select (CS), serial input-output clock (SCLK), serial data input (SDI), and serial data output (SDO)] that provide a direct 4-wire interface to the serial port of most popular host microprocessors (SPI interface). When interfaced with a DSP, a frame sync (FS) signal is used to indicate the start of a serial data frame.

In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip analog multiplexer that can select any analog inputs or one of three internal self-test voltages. The sample-and-hold function is automatically started after the fourth SCLK edge (normal sampling) or can be controlled by a special pin, CSTART, to extend the sampling period (extended sampling). The normal sampling period can also be programmed as short (12 SCLKs) or as long (24 SCLKs) to accommodate faster SCLK operation popular among high-performance signal processors. The TLV2548 and TLV2544 are designed to operate with very low power consumption. The power-saving feature is further enhanced with software/hardware/autopower-down modes and programmable conversion speeds. The conversion clock (OSC) and reference are built-in. The converter can use the external SCLK as the source of the conversion clock to achieve higher (up to 2.8 µs when a 20 MHz SCLK is used) conversion speed. Two different internal reference voltages are available. An optional external reference can also be used to achieve maximum flexibility.

The TLV2544Q and the TLV2548Q are characterized for operation from –40°C to 125°C. The TLV2548M is characterized for operation from –55°C to 125°C.

Features

  • Maximum Throughput 200-KSPS
  • Built-In Reference, Conversion Clock and 8× FIFO
  • Differential/Integral Nonlinearity Error:
    ±1.2 LSB at –55°C to 125°C
  • Signal-to-Noise and Distortion Ratio:
    65 dB, fi = 12-kHz at –55°C to 125°C
  • Spurious Free Dynamic Range: 75 dB, fi = 12- kHz
  • SPI/DSP-Compatible Serial Interfaces With SCLK up to 20-MHz
  • Single Wide Range Supply 3 Vdc to 5.5 Vdc
  • Analog Input Range 0-V to Supply Voltage With 500 kHz BW
  • Hardware Controlled and Programmable Sampling Period
  • Low Operating Current (1-mA at 3.3-V, 2-mA at 5.5-V With External Ref,
    1.7-mA at 3.3-V, 2.4-mA at 5.5-V With Internal Ref)
  • Power Down: Software/Hardware Power-Down Mode (1 µA Typ, Ext Ref),
    Autopower-Down Mode (1 µA Typ, Ext Ref)
  • Programmable Auto-Channel Sweep
  • Available in Q-Temp Automotive High Reliability Automotive Applications
    Configuration Control/Print Support Qualification to Automotive Standards

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Parametrics Compare all products in Analog to Digital Converters

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
INL (Max) (+/-LSB)
SNR (dB)
SFDR (dB)
Power Consumption (Typ) (mW)
Interface
Architecture
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
ENOB (Bits)
Digital Supply (Min) (V)
Digital Supply (Max) (V)
Operating Temperature Range (C)
Rating
Package Group
Package Size: mm2:W x L (PKG)
Reference Mode
TLV2548M
12   
200kSPS   
8   
1.2   
70   
84   
3.3   
SPI   
SAR   
3   
5.5   
11.6   
3   
5.5   
-55 to 125   
Military   
LCCC   
20LCCC: 79 mm2: 8.89 x 8.89(LCCC)   
Ext
Int   

Other qualified versions of TLV2548M

Version Part Number Definition
Catalog TLV2548 TI's standard catalog product
Enhanced Product TLV2548-EP Supports Defense, Aerospace and Medical Applications