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MCP3008T Datasheet(PDF) 4 Page - Microchip Technology |
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MCP3008T Datasheet(HTML) 4 Page - Microchip Technology |
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4 / 40 page  MCP3004/3008 DS21295D-page 4 © 2008 Microchip Technology Inc. Leakage Current — 0.001 ±1 µA Switch Resistance — 1000 — Ω See Figure 4-1 Sample Capacitor — 20 — pF See Figure 4-1 Digital Input/Output Data Coding Format Straight Binary High Level Input Voltage VIH 0.7 VDD —— V Low Level Input Voltage VIL — 0.3 VDD V High Level Output Voltage VOH 4.1 — — V IOH = -1 mA, VDD = 4.5V Low Level Output Voltage VOL —— 0.4 V IOL = 1 mA, VDD = 4.5V Input Leakage Current ILI -10 — 10 µA VIN = VSS or VDD Output Leakage Current ILO -10 — 10 µA VOUT = VSS or VDD Pin Capacitance (All Inputs/Outputs) CIN, COUT —— 10 pF VDD = 5.0V (Note 1) TA = 25°C, f = 1 MHz Timing Parameters Clock Frequency fCLK —— 3.6 1.35 MHz MHz VDD = 5V (Note 3) VDD = 2.7V (Note 3) Clock High Time tHI 125 — — ns Clock Low Time tLO 125 — — ns CS Fall To First Rising CLK Edge tSUCS 100 — — ns CS Fall To Falling CLK Edge tCSD —— 0 ns Data Input Setup Time tSU 50 — — ns Data Input Hold Time tHD 50 — — ns CLK Fall To Output Data Valid tDO —— 125 200 ns ns VDD = 5V, See Figure 1-2 VDD = 2.7V, See Figure 1-2 CLK Fall To Output Enable tEN —— 125 200 ns ns VDD = 5V, See Figure 1-2 VDD = 2.7V, See Figure 1-2 CS Rise To Output Disable tDIS — — 100 ns See Test Circuits, Figure 1-2 CS Disable Time tCSH 270 — — ns D OUT Rise Time tR — — 100 ns See Test Circuits, Figure 1-2 (Note 1) D OUT Fall Time tF — — 100 ns See Test Circuits, Figure 1-2 (Note 1) ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VREF = 5V, TA = -40°C to +85°C, fSAMPLE = 200 ksps and fCLK = 18*fSAMPLE. Unless otherwise noted, typical values apply for VDD = 5V, TA = +25°C. Parameter Sym Min Typ Max Units Conditions Note 1: This parameter is established by characterization and not 100% tested. 2: See graphs that relate linearity performance to VREF levels. 3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. See Section 6.2 “Maintaining Minimum Clock Speed” , “Maintaining Minimum Clock Speed”, for more information. |
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