AD7764

Data Sheet AD7764 24-Bit, 312 kSPS, 109 dB Sigma-Delta ADC with On-Chip Buffers and Serial Interface FEATURES FUNCTIONAL BLOCK DIAGRAM ► High performance 24-bit Σ-∆ ADC: wide input bandwidth with excellent dc specifications ► 115 dB dynamic range at 78.125 kHz output data rate ► 109 dB dynamic range at 312.5 kHz output data rate ► 312.5 kHz maximum fully filtered output word rate ► Pin-selectable oversampling rates of 64×, 128×, and 256× ► Low power mode without reducing available input bandwidth ► Flexible serial peripheral interface (SPI) ► Fully differential modulator input ► On-chip differential amplifier for signal buffering ► On-chip reference buffer ► Full band, low-pass, finite impulse response (FIR) filter ► Overrange alert pin ► Digital gain correction registers ► Power-down mode ► Synchronization of multiple devices via the SYNC pin ► Daisy chaining ► Power supply: 2.5 V and 5 V ► External reference: 4.096 V ► Operating temperature range: −40°C to +85°C ► Available in 4.4 mm × 9.7 mm, 28-lead TSSOP Figure 1. Table 1. Related Devices Device No. Description AD7760 AD7762 AD7763 AD7765 AD7766 AD7767 2.5 MSPS, 100 dB, parallel output, on-chip buffer 625 kSPS, 109 dB, parallel output, on-chip buffer 625 kSPS, 109 dB, serial output, on-chip buffers 156 kSPS, 112 dB, serial output, on-chip buffers 128 kSPS/64 kSPS/32 kSPS, 8.5 mW, 109 dB SNR 128 kSPS/64 kSPS/32 kSPS, 8.5 mW, 109 dB SNR APPLICATIONS ► Data acquisition systems ► Vibration analysis ► Instrumentat...