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AD7478

Features: Fast Throughput Rate: 1 MSPS Specified for VDD of 2.35 V to 5.25 V Low Power:3.6 mW Typ at 1 MSPS with 3 V Supplies15 mW Typ at 1 MSPS with 5 V Supplies Wide Input Bandwidth:70 dB SNR at 100 kHz Input Frequency Flexible Power/Serial Clock Speed Management No Pipeline Delays High Speed S...

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SeekIC No. : 004270303 Detail

AD7478: Features: Fast Throughput Rate: 1 MSPS Specified for VDD of 2.35 V to 5.25 V Low Power:3.6 mW Typ at 1 MSPS with 3 V Supplies15 mW Typ at 1 MSPS with 5 V Supplies Wide Input Bandwidth:70 dB SNR at ...

AD7478 Data Sheet

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Part Number:
AD7478
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/5/28

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Product Details

Description



Features:

Fast Throughput Rate: 1 MSPS
Specified for VDD of 2.35 V to 5.25 V
Low Power:
3.6 mW Typ at 1 MSPS with 3 V Supplies
15 mW Typ at 1 MSPS with 5 V Supplies
Wide Input Bandwidth:
70 dB SNR at 100 kHz Input Frequency
Flexible Power/Serial Clock Speed Management
No Pipeline Delays
High Speed Serial Interface
SPI®/QSPI™/MICROWIRE™/DSP Compatible
Standby Mode: 1 A Max
6-Lead SOT-23 Package




Application

Battery-Powered Systems
Personal Digital Assistants
Medical Instruments
Mobile Communications
Instrumentation and Control Systems
Data Acquisition Systems
High Speed Modems
Optical Sensors




Pinout

AD7478 Diagram




Specifications

Resolution (Bits) 8bit
T-Put Rate 1MSPS
# Chan 1
Supply V Single(+3),Single(+3.3),Single(+5)
Pwr Diss (max) 17.5mW
Interface Ser,SPI
Ain Range Uni Vdd
SNR (dB) n/a
Pkg Type SOT


(TA = 25°C, unless otherwise noted.)
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
Analog Input Voltage to GND . . . . . . . . 0.3 V to VDD + 0.3 V
Digital Input Voltage to GND . . . . . . . . . . . . . . 0.3 V to +7 V
Digital Output Voltage to GND . . . . . . 0.3 V to VDD + 0.3 V
Input Current to Any Pin Except Supplies2 . . . . . . . . ±10 mA
Operating Temperature Range
Commercial (A, B Versions) . . . . . . . . . . . .40°C to +85°C
Military (S Version) . . . . . . . . . . . . . . . . . . 55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
SOT-23 Package
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .230°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 92°C/W
Lead Temperature, Soldering
Reflow (10 sec to 30 sec) . . . . . . . . . . . . . . . ..235 (0/+5)°C
Pb-Free Temperature Soldering
Reflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 (0/+5)°C
ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 kV




Description

The AD7476/AD7477/AD7478 are, respectively, 12-bit, 10-bit, and 8-bit, high speed, low power, successive-approximation ADCs. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 6 MHz.

The conversion process and data acquisition of AD7476/AD7477/AD7478 are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. There are no pipeline delays associated with the part.

The AD7476/AD7477/AD7478 use advanced design techniques to achieve very low power dissipation at high throughput rates.

The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC. Thus the analog input range for the part is 0 V to VDD. The conversion rate is determined by the SCLK of AD7476/AD7477/AD7478.






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