Datasheet AD8475 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | Precision, Selectable Gain, Fully Differential Funnel Amplifier |
| 页数 / 页 | 24 / 3 — Data Sheet. AD8475. SPECIFICATIONS. Table 1. B Grade. A Grade. Parameter. … |
| 修订版 | D |
| 文件格式/大小 | PDF / 555 Kb |
| 文件语言 | 英语 |
Data Sheet. AD8475. SPECIFICATIONS. Table 1. B Grade. A Grade. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
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Data Sheet AD8475 SPECIFICATIONS
VS = 5 V, G = 0.4, VOCM connected to 2.5 V, RL = 1 kΩ differential y, TA = 25°C, referred to output (RTO), unless otherwise noted.
Table 1. B Grade A Grade Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE −3 dB Small Signal 150 150 MHz Bandwidth −3 dB Large Signal 15 15 MHz Bandwidth Slew Rate 2 V step 50 50 V/µs Settling Time to 0.01% 2 V step on output 45 45 ns Settling Time to 0.001% 2 V step on output 50 50 ns NOISE/DISTORTION1 THD + N f = 100 kHz, VOUT = 4 V p-p, −112 −112 dB 22 kHz band-pass filter HD2 f = 1 MHz, VOUT = 2 V p-p −110 −110 dB HD3 f = 1 MHz, VOUT = 2 V p-p −96 −96 dB IMD3 f1 = 0.95 MHz, f2 = 1.05 MHz, −90 −90 dBc VOUT = 2 V p-p IMD3 f1 = 95 kHz, f2 = 105 kHz, −84 −84 dBc VOUT = 2 V p-p Output Voltage Noise f = 0.1 Hz to 10 Hz 2.5 2.5 µV p-p Spectral Noise Density f = 1 kHz 10 10 nV/√Hz GAIN 0.4 0.4 V/V Gain Error RL = ∞ 0.02 0.05 % Gain Drift −40°C ≤ TA ≤ +85°C 1 3 1 3 ppm/°C Gain Nonlinearity VOUT = 4 V p-p 2.5 2.5 ppm OFFSET AND CMRR Offset2 RTO 50 200 50 500 µV vs. Temperature −40°C ≤ TA ≤ +85°C 2.5 2.5 µV/°C vs. Power Supply VS = ±2.5 V to ±5 V 90 90 dB Common-Mode Rejection VINcm = ±5 V 86 76 dB Ratio INPUT CHARACTERISTICS Input Voltage Range3 Differential input −6.25 +6.25 −6.25 +6.25 V Single-ended input −12.5 +12.5 −12.5 +12.5 V Impedance4 VINcm = VS/2 Single-Ended Input 2.92 2.92 kΩ Differential Input 5 5 kΩ Common Mode Input 1.75 1.75 kΩ OUTPUT CHARACTERISTICS Output Swing −VS + +VS − −VS + +VS − 0.05 0.05 0.05 0.05 Output Balance Error ∆VOUT,cm/∆VOUT,dm –90 −80 dB Output Impedance 0.1 0.1 Ω Capacitive Load Per output 30 30 pF Short-Circuit Current Limit 110 110 mA VOCM CHARACTERISTICS VOCM Input Voltage Range −VS + 1 +VS −VS + 1 +VS V VOCM Input Impedance 100 100 kΩ VOCM Gain Error 0.02 0.02 % Rev. D | Page 3 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION OVERVIEW CIRCUIT INFORMATION Output Common-Mode Voltage (VOCM) DC PRECISION INPUT VOLTAGE RANGE DRIVING THE AD8475 POWER SUPPLIES APPLICATIONS INFORMATION TYPICAL CONFIGURATION SINGLE-ENDED TO DIFFERENTIAL CONVERSION SETTING THE OUTPUT COMMON-MODE VOLTAGE HIGH PERFORMANCE ADC DRIVING AD8475 EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE
Data Sheet AD8475 SPECIFICATIONS
VS = 5 V, G = 0.4, VOCM connected to 2.5 V, RL = 1 kΩ differential y, TA = 25°C, referred to output (RTO), unless otherwise noted.
Table 1. B Grade A Grade Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE −3 dB Small Signal 150 150 MHz Bandwidth −3 dB Large Signal 15 15 MHz Bandwidth Slew Rate 2 V step 50 50 V/µs Settling Time to 0.01% 2 V step on output 45 45 ns Settling Time to 0.001% 2 V step on output 50 50 ns NOISE/DISTORTION1 THD + N f = 100 kHz, VOUT = 4 V p-p, −112 −112 dB 22 kHz band-pass filter HD2 f = 1 MHz, VOUT = 2 V p-p −110 −110 dB HD3 f = 1 MHz, VOUT = 2 V p-p −96 −96 dB IMD3 f1 = 0.95 MHz, f2 = 1.05 MHz, −90 −90 dBc VOUT = 2 V p-p IMD3 f1 = 95 kHz, f2 = 105 kHz, −84 −84 dBc VOUT = 2 V p-p Output Voltage Noise f = 0.1 Hz to 10 Hz 2.5 2.5 µV p-p Spectral Noise Density f = 1 kHz 10 10 nV/√Hz GAIN 0.4 0.4 V/V Gain Error RL = ∞ 0.02 0.05 % Gain Drift −40°C ≤ TA ≤ +85°C 1 3 1 3 ppm/°C Gain Nonlinearity VOUT = 4 V p-p 2.5 2.5 ppm OFFSET AND CMRR Offset2 RTO 50 200 50 500 µV vs. Temperature −40°C ≤ TA ≤ +85°C 2.5 2.5 µV/°C vs. Power Supply VS = ±2.5 V to ±5 V 90 90 dB Common-Mode Rejection VINcm = ±5 V 86 76 dB Ratio INPUT CHARACTERISTICS Input Voltage Range3 Differential input −6.25 +6.25 −6.25 +6.25 V Single-ended input −12.5 +12.5 −12.5 +12.5 V Impedance4 VINcm = VS/2 Single-Ended Input 2.92 2.92 kΩ Differential Input 5 5 kΩ Common Mode Input 1.75 1.75 kΩ OUTPUT CHARACTERISTICS Output Swing −VS + +VS − −VS + +VS − 0.05 0.05 0.05 0.05 Output Balance Error ∆VOUT,cm/∆VOUT,dm –90 −80 dB Output Impedance 0.1 0.1 Ω Capacitive Load Per output 30 30 pF Short-Circuit Current Limit 110 110 mA VOCM CHARACTERISTICS VOCM Input Voltage Range −VS + 1 +VS −VS + 1 +VS V VOCM Input Impedance 100 100 kΩ VOCM Gain Error 0.02 0.02 % Rev. D | Page 3 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION OVERVIEW CIRCUIT INFORMATION Output Common-Mode Voltage (VOCM) DC PRECISION INPUT VOLTAGE RANGE DRIVING THE AD8475 POWER SUPPLIES APPLICATIONS INFORMATION TYPICAL CONFIGURATION SINGLE-ENDED TO DIFFERENTIAL CONVERSION SETTING THE OUTPUT COMMON-MODE VOLTAGE HIGH PERFORMANCE ADC DRIVING AD8475 EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE