AD7706BN

Product Summary

The AD7706BN is a 16-Bit Sigma-Delta ADC. The AD7706BN is a complete analog front ends for low frequency measurement applications. The two-/three-channel device can accept low level input signals directly from a transducer and produce a serial digital output. The device employs a sigmadelta conversion technique to realize up to 16 bits of no missing codes performance. The selected input signal is applied to a proprietary programmable gain front end based around an analog modulator. The modulator output is processed by an onchip digital filter. The first notch of this digital filter can be programmed via an on-chip control register allowing adjustment of the filter cutoff and output update rate.

Parametrics

AD7706BN absolute maximum ratings: (1)VDD to GND: -0.3V to +7V; (2)Analog Input Voltage to GND: -0.3 V to VDD +0.3V; (3)Reference Input Voltage to GND: -0.3 V to VDD +0.3V; (4)Digital Input Voltage to GND: -0.3 V to VDD +0.3 V; (5)Digital Output Voltage to GND: -0.3 V to VDD +0.3 V; (6)Operating Temperature Range, Commercial (B Version): -40℃ to +85℃; (7)Storage Temperature Range: -65℃ to +150℃; (8)Junction Temperature: +150℃; (9)Plastic DIP Package, Power Dissipation: 450 mW; (10)θJA Thermal Impedance: 105℃/W; (11)Lead Temperature, (Soldering, 10 sec): +260℃; (12)SOIC Package, Power Dissipation: 450 mW; (13)θJA Thermal Impedance: 75℃/W; (14)Lead Temperature, Soldering Vapor Phase (60 sec): +215℃; (15)Infrared (15 sec): +220℃; (16)SSOP Package, Power Dissipation: 450 mW; (17)θJA Thermal Impedance: 139℃/W; (18)Lead Temperature, Soldering; (19)Vapor Phase (60 sec): +215℃; (20)Infrared (15 sec): +220℃; (21)ESD Rating: >4000V.

Features

AD7706BN features: (1)AD7706: Three Pseudo Differential Input Channel ADCs, 16 Bits No Missing Codes; 0.003% Nonlinearity; (2)Programmable Gain Front End, Gains from 1 to 128; (3)Three-Wire Serial Interface, SPI, QSPI, MICROWIRE. and DSP Compatible; Schmitt Trigger Input on SCLK; (4)Ability to Buffer the Analog Input; (5)2.7 V to 3.3 V or 4.75 V to 5.25 V Operation; (6)Power Dissipation 1 mW max @ 3V; (7)Standby Current 8 μA max; (8)16-Lead DIP, 16-Lead SOIC and TSSOP Packages.

Diagrams