ADS5444-SP 13-Bit, 250-MSPS Analog-to-Digital Converter (ADC)- Class V | TI.com

ADS5444-SP (ACTIVE)

13-Bit, 250-MSPS Analog-to-Digital Converter (ADC)- Class V

 

Description

The ADS5444 is a 13 bit 250 MSPS analog-to-digital converter (ADC) that operates from a 5 V supply, while providing LVDS-compatible digital outputs from a 3.3 V supply. The ADS5444 input buffer isolates the internal switching of the onboard track and hold (T&H) from disturbing the signal source. An internal reference generator is also provided to further simplify the system design. The ADS5444 has outstanding low noise and linearity over input frequency.

The ADS5444 is available in a 84 pin ceramic nonconductive tie-bar package (HFG). The ADS5444 is built on a state-of-the-art Texas Instruments complementary bipolar process (BiCom3X) and is specified over the full military temperature range (–55°C to 125°C Tcase).

This CQFP package has built in vias that electrically and thermally connect the bottom of the die to a pad on the bottom of the package. To efficiently remove heat and provide a low-impedance ground path, a thermal land is required on the surface of the PCB directly underneath the body of the package. During normal surface mount flow solder operations, the heat pad on the underside of the package is soldered to this thermal land creating an efficient thermal path. Normally, the PCB thermal land has a number of thermal vias within it that provide a thermal path to internal copper areas (or to the opposite side of the PCB) that provide for more efficient heat removal. TI typically recommends an 11,9-mm2 board-mount thermal pad. This allows maximum area for thermal dissipation, while keeping leads away from the pad area to prevent solder bridging. A sufficient quantity of thermal/electrical vias must be included to keep the device within recommended operating conditions. This pad must be electrically at ground potential.

Features

  • 13 Bit Resolution
  • 250 MSPS Sample Rate
  • SNR = 67.6 dBc at 230 MHz IF and 250 MSPS
  • SFDR = 74.0 dBc at 230 MHz IF and 250 MSPS
  • 2.2 VPP Differential Input Voltage
  • Fully Buffered Analog Inputs
  • 5 V Analog Supply Voltage
  • LVDS Compatible Outputs
  • Total Power Dissipation: 2 W
  • Offset Binary Output Format
  • Pin Compatible With the ADS5440
  • Military Temperature Range
    (–55°C to 125°C Tcase)

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Parametrics Compare all products in High-speed ADCs (>10MSPS)

 
Sample Rate (Max) (MSPS)
Resolution (Bits)
Number of input channels
SNR (dB)
ENOB (Bits)
SFDR (dB)
Power consumption (Typ) (mW)
Input range (Vp-p)
Interface
Operating temperature range (C)
Analog input BW (MHz)
Input buffer
Package Group
Package size: mm2:W x L (PKG)
Rating
Architecture
DNL (Typ) (+/-LSB)
INL (Typ) (+/-LSB)
Reference mode
ADS5444-SP ADS5400-SP ADS5424-SP ADS5474-SP
250     1000     105     400    
13     12     14     14    
1     1     1     1    
69     59.1     74.3     70.2    
11.1     9.3     12.3     11.2    
77     75     95     86    
2250     2200     1900     2500    
2.2     2     2.2     2.2    
Parallel LVDS     Parallel LVDS     Parallel CMOS     Parallel LVDS    
-55 to 125     -55 to 125
25 Only    
-55 to 125
25 Only    
-55 to 125    
500     2150     570     1440    
Yes     Yes     No     Yes    
CFP | 84     CFP | 100     CFP | 52     CFP | 84    
See datasheet (CFP)     See datasheet (CFP)     See datasheet (CFP)     See datasheet (CFP)    
Space     Space     Space     Space    
Pipeline     Pipeline     Pipeline     Pipeline    
0.4     0.7     0.5     0.7    
0.9     2     1.5     1    
Int     Ext
Int    
Int     Ext
Int