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ADC0808S250HW-C1 Folha de dados(PDF) 11 Page - Integrated Device Technology |
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ADC0808S250HW-C1 Folha de dados(HTML) 11 Page - Integrated Device Technology |
11 / 22 page ADC0808S125_ADC0808S250_4 © IDT 2012. All rights reserved. Product data sheet Rev. 04 — 2 July 2012 11 of 22 Integrated Device Technology ADC0808S125/250 Single 8-bit ADC, up to 125 MHz or 250 MHz [1] Guaranteed by design. [2] Vgpd is the voltage of ground potential difference across or between boards. [3] The ADC input range can be adjusted with an external reference voltage applied to pin FSIN. This voltage must be referenced to AGND. Vidth input differential threshold voltage |Vgpd| < 50 mV [2] 100 - +100 mV II input current 825 mV < VI < 1575 mV - - 50 A 1.8 V CMOS clock input; see Figure 4 VIL LOW-level input voltage DGND - 0.2VCCD V VIH HIGH-level input voltage 0.8VCCD - VCCD V IIL LOW-level input current VIL = 0.2VCCD - - 50 A IIH HIGH-level input current VIH = 0.8VCCD - - 50 A Analog inputs: pins IN and INN Ri input resistance [1] - 1.0 - M Ci input capacitance [1] - 1.0 - pF VI(cm) common-mode input voltage Vi(IN) = Vi(INN); output code = 127 0.7 0.95 1.0 V Digital input pins: OTC, CE_N, DEL0, DEL1, CLKSEL and CCSSEL VIL LOW-level input voltage DGND - 0.2VCCD V VIH HIGH-level input voltage 0.8VCCD - VCCD V IIL LOW-level input current VIL = 0.3VCCD - - 50 A IIH HIGH-level input current VIH = 0.7VCCD - - 50 A Voltage controlled regulator output: pin CMADC VO(cm) common-mode output voltage 0.85 0.95 1.1 V Reference voltage input: pin FSIN[3] VFSIN voltage on pin FSIN internal reference - 0 0.6 V external reference 1.15 1.25 1.35 V Ii(FSIN) input current on pin FSIN - 12 - A Vi(p-p)(max) maximum peak-to-peak input voltage internal reference 1.92 2 2.03 V external reference VFSIN = 1.15 V 1.80 1.825 1.85 V VFSIN = 1.25 V 1.98 1.99 2.03 V VFSIN = 1.35 V 2.11 2.16 2.18 V Digital outputs: pins D0 to D7, CCS and IR VOL LOW-level output voltage OGND - 0.2 V VOH HIGH-level output voltage VCCO 0.2 - VCCO V Table 12. Static characteristics …continued VCCA = 3.0 V to 3.6 V; VCCD = 1.65 V to 1.95 V; VCCO = 1.65 V to 1.95 V; pins AGND1, AGND2 and DGND1 shorted together; Tamb = 40 C to +85 C; Vi(IN) Vi(INN) = 2.0 V 0.5 dB; VI(cm) = 0.95 V; VFSIN = 0 V; typical values are measured at VCCA = 3.3 V, VCCD = VCCO = 1.8 V, Tamb = 25 C and CL = 10 pF; unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit |
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