Features: 3Msps Sampling ADC with Two Simultaneous Differential Inputs
1.5Msps Throughput per Channel
Low Power Dissipation: 14mW (Typ)
3V Single Supply Operation
2.5V Internal Bandgap Reference with External Overdrive
3-Wire Serial Interface
Sleep (10µW) Shutdown Mode
Nap (3mW) Shutdown Mode
80dB Common Mode Rejection at 100kHz
0V to 2.5V Unipolar Input Range
Tiny 10-Lead MS PackageApplication-Telecommunications
-Data Acquisition Systems
-Uninterrupted Power Supplies
-Multiphase Motor Control
-I & Q Demodulation
-Industrial ControlPinout
Specifications(Notes 1, 2)
Supply Voltage (VDD)...............................................4V
Analog Input Voltage
(Note 3)..................................... 0.3V to (VDD+ 0.3V)
Digital Input Voltage.................. 0.3V to (VDD+ 0.3V)
Digital Output Voltage............... 0.3V to (VDD + 0.3V)
Power Dissipation..............................................100mW
Operation Temperature Range
LTC1407C/LTC1407AC..............................0°C to 70°C
LTC1407I/LTC1407AI...........................40°C to 85°C
Storage Temperature Range..............65°C to 150°C
Lead Temperature (Soldering, 10 sec).................300°CDescriptionThe LTC®1407/LTC1407A are 12-bit/14-bit, 3Msps ADCs with two 1.5Msps simultaneously sampled differential inputs. The devices draw only 4.7mA from a single 3V supply and come in a tiny 10-lead MS package. A Sleep shutdown feature lowers power consumption to 10µW. The combination of speed, low power and tiny package makes the LTC1407/LTC1407A suitable for high speed, portable applications.
The LTC1407/LTC1407A contain two separate differential inputs that are sampled simultaneously on the rising edge of the CONV signal. These two sampled inputs are then converted at a rate of 1.5Msps per channel.
The 80dB common mode rejection allows users to elimi-nate ground loops and common mode noise by measuring signals differentially from the source.
The LTC1407/LTC1407A convert 0V to 2.5V unipolar inputs differen-tially. The absolute voltage swing for CH0+, CH0, CH1+and CH1 extends from ground to the supply voltage.
The serial interface sends out the two conversion results in 32 clocks for compatibility with standard serial interfaces.
LTC1407A Data Sheet
