Datasheet AD8372 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 41 dB Range, 1 dB Step Size, Programmable Dual VGA |
| 页数 / 页 | 16 / 4 — AD8372. Data Sheet. Parameter. Conditions. Min. Typ. Max. Unit |
| 修订版 | C |
| 文件格式/大小 | PDF / 667 Kb |
| 文件语言 | 英语 |
AD8372. Data Sheet. Parameter. Conditions. Min. Typ. Max. Unit
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AD8372 Data Sheet Parameter Conditions Min Typ Max Unit
POWER INTERFACE Supply Voltage 4.5 5.5 V Quiescent Current per Channel Thermal connection made to exposed paddle under 106 mA device vs. Temperature −40°C ≤ TA ≤ +85°C 135 mA Power-Down Current, Both Channels ENB1 and ENB2 low 1.2 mA vs. Temperature −40°C ≤ TA ≤ +85°C 1.3 mA ENABLE INTERFACE Pin ENB1 and Pin ENB2 Enable Threshold Minimum voltage to enable the device 0.8 V ENB1, ENB2 Input Bias Current ENB1, ENB2 = 0 V 400 nA GAIN CONTROL INTERFACE Pin CLK1, Pin CLK2, Pin SDI1, Pin SDI2, Pin SDO1, Pin SDO2, Pin LCH1, and Pin LCH2 VIH Minimum voltage for a logic high 2.4 V Input Bias Current 400 nA Serial Port Output Feedthrough Worse-case feedthrough from CLK1, CLK2, SDI1, −60 dB SDI2, SDO1, SDO2, LCH1, LCH2 to OPC1 and ONC2, or OPC2 and ONC2
Table 2. Gain Code vs. Voltage Gain Look-Up Table 8-Bit Binary Gain Code1 Voltage Gain (dB) 8-Bit Binary Gain Code1 Voltage Gain (dB)
RW DC 000000 < −60 RW DC 010110 +12 RW DC 000001 −9 RW DC 010111 +13 RW DC 000010 −8 RW DC 011000 +14 RW DC 000011 −7 RW DC 011001 +15 RW DC 000100 −6 RW DC 011010 +16 RW DC 000101 −5 RW DC 011011 +17 RW DC 000110 −4 RW DC 011100 +18 RW DC 000111 −3 RW DC 011101 +19 RW DC 001000 −2 RW DC 011110 +20 RW DC 001001 −1 RW DC 011111 +21 RW DC 001010 0 RW DC 100000 +22 RW DC 001011 +1 RW DC 100001 +23 RW DC 001100 +2 RW DC 100010 +24 RW DC 001101 +3 RW DC 100011 +25 RW DC 001110 +4 RW DC 100100 +26 RW DC 001111 +5 RW DC 100101 +27 RW DC 010000 +6 RW DC 100110 +28 RW DC 010001 +7 RW DC 100111 +29 RW DC 010010 +8 RW DC 101000 +30 RW DC 010011 +9 RW DC 101001 +31 RW DC 010100 +10 RW DC 101010 +32 RW DC 010101 +11 RW DC 101011 < −60 1 RW is the read/write bit. RW = 0 for read mode; RW = 1 for write mode. DC is the don’t care bit. Rev. C | Page 4 of 16 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS SERIAL CONTROL INTERFACE TIMING ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION SINGLE-ENDED AND DIFFERENTIAL SIGNALS PASSIVE FILTER TECHNIQUES DIGITAL GAIN CONTROL DRIVING ANALOG-TO-DIGITAL CONVERTERS EVALUATION BOARD SCHEMATIC OUTLINE DIMENSIONS ORDERING GUIDE
POWER INTERFACE Supply Voltage 4.5 5.5 V Quiescent Current per Channel Thermal connection made to exposed paddle under 106 mA device vs. Temperature −40°C ≤ TA ≤ +85°C 135 mA Power-Down Current, Both Channels ENB1 and ENB2 low 1.2 mA vs. Temperature −40°C ≤ TA ≤ +85°C 1.3 mA ENABLE INTERFACE Pin ENB1 and Pin ENB2 Enable Threshold Minimum voltage to enable the device 0.8 V ENB1, ENB2 Input Bias Current ENB1, ENB2 = 0 V 400 nA GAIN CONTROL INTERFACE Pin CLK1, Pin CLK2, Pin SDI1, Pin SDI2, Pin SDO1, Pin SDO2, Pin LCH1, and Pin LCH2 VIH Minimum voltage for a logic high 2.4 V Input Bias Current 400 nA Serial Port Output Feedthrough Worse-case feedthrough from CLK1, CLK2, SDI1, −60 dB SDI2, SDO1, SDO2, LCH1, LCH2 to OPC1 and ONC2, or OPC2 and ONC2
Table 2. Gain Code vs. Voltage Gain Look-Up Table 8-Bit Binary Gain Code1 Voltage Gain (dB) 8-Bit Binary Gain Code1 Voltage Gain (dB)
RW DC 000000 < −60 RW DC 010110 +12 RW DC 000001 −9 RW DC 010111 +13 RW DC 000010 −8 RW DC 011000 +14 RW DC 000011 −7 RW DC 011001 +15 RW DC 000100 −6 RW DC 011010 +16 RW DC 000101 −5 RW DC 011011 +17 RW DC 000110 −4 RW DC 011100 +18 RW DC 000111 −3 RW DC 011101 +19 RW DC 001000 −2 RW DC 011110 +20 RW DC 001001 −1 RW DC 011111 +21 RW DC 001010 0 RW DC 100000 +22 RW DC 001011 +1 RW DC 100001 +23 RW DC 001100 +2 RW DC 100010 +24 RW DC 001101 +3 RW DC 100011 +25 RW DC 001110 +4 RW DC 100100 +26 RW DC 001111 +5 RW DC 100101 +27 RW DC 010000 +6 RW DC 100110 +28 RW DC 010001 +7 RW DC 100111 +29 RW DC 010010 +8 RW DC 101000 +30 RW DC 010011 +9 RW DC 101001 +31 RW DC 010100 +10 RW DC 101010 +32 RW DC 010101 +11 RW DC 101011 < −60 1 RW is the read/write bit. RW = 0 for read mode; RW = 1 for write mode. DC is the don’t care bit. Rev. C | Page 4 of 16 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS SERIAL CONTROL INTERFACE TIMING ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION SINGLE-ENDED AND DIFFERENTIAL SIGNALS PASSIVE FILTER TECHNIQUES DIGITAL GAIN CONTROL DRIVING ANALOG-TO-DIGITAL CONVERTERS EVALUATION BOARD SCHEMATIC OUTLINE DIMENSIONS ORDERING GUIDE