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ST7570TR Datasheet(PDF) 10 Page - STMicroelectronics |
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ST7570TR Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 26 page Electrical characteristics ST7570 10/26 Doc ID 17526 Rev 2 V(PA_OUT) TOL Power amplifier output tolerance (2) VCC=18 V, V(PA_OUT) = 14 V p- p (typ), V(PA_OUT) BIAS = VCC/2, RLOAD=50Ω, T = 25°C See Figure 3 -3% +3% V(PA_OUT) HD2 Power amplifier output 2nd harmonic distortion -70 -63 dBc V(PA_OUT) HD3 Power amplifier output 3rd harmonic distortion -66 -63 dBc V(PA_OUT) THD Power amplifier output total harmonic distortion 0.1 0.15 % C(PA_IN) Power amplifier input capacitance PA_IN+ vs. VSS (3) 10 pF PA_IN- vs. VSS (3) 10 pF PSRR Power supply rejection ratio 50 Hz 100 dB 1 kHz 93 dB 100 kHz 70 dB CL_TH Current sense high threshold on CL pin 2.25 2.35 2.4 V CL_RATIO Ratio between PA_OUT and CL output current. 80 Transmitter V(TX_OUT) BIAS Transmitter output bias voltage - Rx mode VCCA/ 2 V V(TX_OUT) MAX Transmitter output maximum voltage swing TX_GAIN = 31, No load 4.8 4.95 VCCA V p-p TX_GAIN Transmitter output digital gain range 0 31 TX_GAIN TOL Transmitter output digital gain tolerance -0.35 0.35 dB R(TX_OUT) Transmitter output resistance 1 k Ω V(TX_OUT) HD2 Transmitter output 2nd harmonic distortion V(TX_OUT) = 4.5 Vpkpk (typ.), no load, T = 25°C -72 -55 dBc V(TX_OUT) HD3 Transmitter output 3rd harmonic distortion -70 -67 dBc V(TX_OUT) THD Transmitter output Total harmonic distortion 0.1 0.2 % Receiver V(RX_IN) MAX Receiver input maximum voltage VCC = 18 V 16 V p-p V(RX_IN) BIAS Receiver input bias voltage VCCA/ 2 V Z(RX_IN) Receiver input Impedance 10 k Ω V(RX_IN) MIN Receiver input sensitivity Bit rate = 1200 bps @ 50 Hz, BER = 10-3, SNR = 20 dB 45 dBµV rms Table 5. Electrical characteristics (continued) Symbol Parameter Note Min. Typ. Max. Unit |
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