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TDA8785H Datasheet(PDF) 8 Page - NXP Semiconductors |
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TDA8785H Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 24 page 1997 Dec 18 8 Philips Semiconductors Product specification 8-bit high-speed analog-to-digital converter with gain and offset controls TDA8785 CHARACTERISTICS VCCA1 =VCCA2 =VCCD =VCCO = 4.75 to 5.25 V; AGND, DGND and OGND short-circuited together; VCCA to VCCD =VCCD to VCCO =VCCA to VCCO = −0.25 to +0.25 V; Tamb =0to70 °C; typical values measured at VCCA =VCCD =VCCO = 5 V and Tamb =25 °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VCCA1 analog supply voltage 1 4.75 5.0 5.25 V VCCA2 analog supply voltage 2 4.75 5.0 5.25 V VCCD digital supply voltage 4.75 5.0 5.25 V VCCO TTL output supply voltage 4.75 5.0 5.25 V ICCA analog supply current − 80 − mA ICCD digital supply current − 37 − mA ICCO TTL output supply current − 9 − mA Reference voltages (pins Vref and VRB) Vo(ref) output reference voltage 2.60 2.75 2.90 V Vline line regulation voltage VCCA = 4.75 to 5.25 V − 4 − mV Io(L) output load current −0.5 − +0.5 mA VRB reference voltage output bottom (decoupling) − VCCA − 2.5 − V Voffset(B) offset voltage bottom code 0 − VRB − 250 − mV ∆V ADC ADC reference voltage difference between code 0 and 255 − 1 − V Analog inputs (pins Vi(p) and Vi(n)); see Table 1 Vi(diff)(p-p) differential input voltage Vi(p) − Vi(n) (peak-to-peak value) 0 dB gain − 1000 − mV 20 dB gain − 100 − mV VI DC input voltage 2.5 3.0 3.5 V Ii input current − 7 −µA Zi input impedance − 20 − k Ω Ci input capacitance − 1 − pF Fast offset amplifier inputs (pins VFOFF(p) and VFOFF(n)); DC parameters VFOFF(p) positive input voltage 0 dB gain − 500 − mV 20 dB gain − 50 − mV VFOFF(n) negative input voltage 0 dB gain − 500 − mV 20 dB gain − 50 − mV VI DC input voltage VCCA − 0.75 VCCA − 0.25 VCCA V Ii input current − 4 −µA Zi input impedance − 20 − k Ω Ci input capacitance − 1 − pF |
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