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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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RX634 데이터시트(PDF) 91 Page - Renesas Technology Corp |
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RX634 데이터시트(HTML) 91 Page - Renesas Technology Corp |
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91 / 106 page  R01DS0255EJ0100 Rev.1.00 Page 91 of 106 Feb 25, 2015 RX634 Group 5. Electrical Characteristics 5.4 A/D Conversion Characteristics Note: The characteristics apply when no pin functions other than A/D converter input are used. Absolute accuracy includes quantization errors. Offset error, full-scale error, DNL differential nonlinearity error, and INL integral nonlinearity error do not include quantization errors. Note: When using the channel-dedicated sample-and-hold circuit, use the AN000 to AN002 analog input voltage (VAN) that satisfies all the following conditions: 0.25 V ≤ V AN ≤ AVCC0 - 0.25 V, VAN ≤ VREFH0, and AVCC0 ≥ 2.7 V. Note 1. The conversion time is the sum of the sampling time and the comparison time. As the test conditions, the number of sampling states is indicated. Note 2. The value in parentheses indicates the sampling time. Table 5.30 A/D Conversion Characteristics Conditions 1: VCC = AVCC0 = VREFH0 = 2.7 to 3.6 V, VREFH = 2.7 V to AVCC0, VSS = AVSS0 = VREFL = VREFL0 = 0 V, Ta = –40 to +85°C Conditions 2: VCC = AVCC0 = VREFH0 = 4.0 to 5.5 V, VREFH = 4.0 V to AVCC0, VSS = AVSS0 = VREFL = VREFL0 = 0 V, Ta = –40 to +85°C Item Min. Typ. Max. Unit Test Conditions A/D conversion clock frequency (fPCLKD) 1 — 54 MHz Resolution — — 12 Bit Conversion time*1 (AD clock = 54 MHz) Permissible signal source impedance = 1.0 k Ω 1 (0.4)*2 —— μs High-precision channel Permissible signal source impedance = 1 k Ω, AVCC ≥ 4.0 V 1.9 (1.3)*2 — — Normal-precision channel Permissible signal source impedance = 1 k Ω, AVCC ≥ 2.7 V 2.5 (1.9)*2 —— Analog input capacitance — — 30 pF Offset error — ±2.0 ±6.0 LSB High-precision channel (SH used) — ±1.5 ±3.0 High-precision channel (SH not used) — ±2.0 ±7.5 Normal-precision channel Full-scale error — ±2.0 ±6.0 LSB High-precision channel (SH used) — ±1.5 ±3.0 High-precision channel (SH not used) — ±2.0 ±7.5 Normal-precision channel Quantization error — ±0.5 — LSB Absolute accuracy — ±4.0 ±8.0 LSB High-precision channel (SH used) — ±2.0 ±6.0 High-precision channel (SH not used) — ±2.5 ±8.0 Normal-precision channel DNL differential nonlinearity error — ±2.0 ±6.0 LSB High-precision channel (SH used) — ±1.5 ±3.0 High-precision channel (SH not used) — ±2.0 ±4.0 Normal-precision channel INL integral nonlinearity error — ±2.0 ±6.0 LSB High-precision channel (SH used) — ±1.5 ±3.0 High-precision channel (SH not used) — ±2.0 ±4.0 Normal-precision channel Table 5.31 Sampling Time Conditions 1: VCC = AVCC0 = VREFH0 = 2.7 to 3.6V, VREFH = 2.7 V to AVCC0, VSS = AVSS0 = VREFL = VREFL0 = 0 V, Ta = –40 to +85°C Conditions 2: VCC = AVCC0 = VREFH0 = 4.0 to 5.5V, VREFH = 4.0 V to AVCC0, VSS = AVSS0 = VREFL = VREFL0 = 0 V, Ta = –40 to +85°C Item Symbol Typ. Unit Test Conditions Sampling time High-precision channel Ts 0.2 + 0.16 × R0 (K Ω) μs Figure 5.36 Normal-precision channel 0.3 + 0.16 × R0 (K Ω) |
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