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TDA9901 データシート(PDF) 7 Page - NXP Semiconductors |
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TDA9901 データシート(HTML) 7 Page - NXP Semiconductors |
7 / 18 page TDA9901_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 14 August 2008 7 of 18 NXP Semiconductors TDA9901 Wideband differential digital controlled variable gain amplifier Vn(o)(eq) equivalent output noise voltage Rs = 100 Ω; fi = 20 MHz; Tamb =25 °C G = 6 dB - 75 - nV/ √Hz G = 12 dB - 82 - nV/ √Hz G = 18 dB - 97 - nV/ √Hz G = 24 dB - 91 - nV/ √Hz G = 30 dB - 124 - nV/ √Hz PSRR power supply rejection ratio minimum gain; VDDA 0 MHz to 20 MHz - 57 - dB 20 MHz to 100 MHz - 39 - dB minimum gain; VDDD 0 MHz to 20 MHz - 67 - dB 20 MHz to 100 MHz - 51 - dB CMRR common mode rejection ratio 0 MHz to 20 MHz - 75 - dB 20 MHz to 100 MHz - 45 - dB Analog inputs Vi(p-p)(max) maximum peak-to-peak input voltage minimum gain - 1.0 - V maximum gain - 60.4 - mV Vi(cm) common-mode input voltage 2.0 2.7 VDDA − 1.9 V Ii input current Vi(cm) = 2.7 V - 55 - µA Ri input resistance 10 - - k Ω Ci input capacitance - - 5 pF Analog outputs[2] Vo(dif)(p-p)max maximum peak-to-peak differential output voltage maximum gain 2.0 - - V minimum gain 2.0 - - V VO(cm) common-mode output voltage referenced to VDDA; Tamb =25 °C VDDA − 2.56 VDDA − 2.42 VDDA − 2.29 V ∆VO(cm)/∆T common-mode output voltage variation with temperature - −1.8 - mV/ °C SRse single-ended slew rate - 275 - V/ µs Ro output resistance - 15 26 Ω Co output capacitance - 3 - pF Variable gain amplifier dynamic performance; CL = 5 pF; RL = 680 Ω; see Figure 6, 7, 8, 9 and 10 α2H second harmonic level Vo = Vo(max) fi = 0.5 MHz - −80 −67 dBc fi = 4.43 MHz - −77 −67 dBc fi = 12.5 MHz - −76 −65 dBc fi = 21.4 MHz - −74 −62 dBc Table 6. Characteristics …continued VDDA = V11 to V12 = 4.75 V to 5.25 V; VDDD = V18 to V17 = 3.0 V to 5.25 V; VSSA and VSSD shorted together; Tamb = −40 °C to +85 °C; typical values measured at VCCA = 5.0 V; VCCD = 3.3 V and Tamb =25 °C unless otherwise specified [1]. Symbol Parameter Conditions Min Typ Max Unit |
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