Datasheet AD8260 (Analog Devices) - 8
| Hersteller | Analog Devices |
| Beschreibung | High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps |
| Seiten / Seite | 32 / 8 — AD8260. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. VOUT = 200mV … |
| Revision | B |
| Dateiformat / Größe | PDF / 1.2 Mb |
| Dokumentensprache | Englisch |
AD8260. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. VOUT = 200mV p-p. T = +25°C. T = –40°C. RTO. B d. T = +105°C. /√Hz. V n. RTI. ( E. IS NO
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AD8260 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VS (supply voltage) = 3.3 V, TA = 25°C, CL = 5 pF, f = 10 MHz, preamplifier gain = 2×, RFB1 and RFB2 of the preamplifier = 100 Ω, RLOAD of the driver amplifier = 500 Ω, TX and RX enabled, unless otherwise specified.
5 20 VOUT = 200mV p-p T = +25°C T = –40°C 4 RTO 15 ) ) 3 B d T = +105°C /√Hz ( V n RTI IN 10 ( E GA 2 IS NO 5 1 0
3
0
6
100k 1M 10M 100M 200M
00
100k 1M 10M 50M
2- -00
FREQUENCY (Hz)
19
FREQUENCY (Hz)
92 07 071 Figure 3. Small-Signal Frequency Response at Three Temperatures of the Figure 6. Input-Referred and Output-Referred Noise of the High Current High Current Driver—See Figure 51 Driver—See Figure 52
5 100 VOUT = 200mV p-p VS = +3.3V 4 ) (Ω 10 ) 3 V B S = +5V d DANCE ( E IN P VS = ±5V M GA I 2 UT P 1 UT O 1 0
4
0.1
7
100k 1M 10M 100M 200M
00
100k 1M 10M 100M
2- -00
FREQUENCY (Hz)
19
FREQUENCY (Hz)
92 07 71 0 Figure 4. Small-Signal Frequency Response of the High Current Driver for Figure 7. Output Impedance of the High Current Driver Three Supply Voltages—See Figure 51 See Figure 53
5 –20 VLOAD = 1V p-p; RLOAD = 50Ω VLOAD = 1V p-p; RLOAD = 500Ω V –30 LOAD = 2V p-p; RLOAD = 50Ω 4 VLOAD = 2V p-p; RLOAD = 500Ω Bc) d –40 N ( IO ) –50 3 B RT 2V p-p d ( O T IN S –60 HD2 GA HD3 2 C DI NI –70 O –80 1 HARM 1V p-p –90 0
5
–100 100k 1M 10M 100M 200M
00
10 100 1k
2- 8
FREQUENCY (Hz)
19
LOAD RESISTANCE (Ω)
00 07 2- 19 07 Figure 5. Large-Signal Frequency Response of the High Current Driver for Two Figure 8. Harmonic Distortion (HD2, HD3) vs. Load Resistance for the High Values of Output Voltage and Two Values of Load Resistance—See Figure 51 Current Driver—See Figure 54 Rev. B | Page 8 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION OVERVIEW HIGH CURRENT DRIVER AMPLIFIER PRECAUTIONS TO BE OBSERVED DURING HALF-DUPLEX OPERATION VMID BUFFER PREAMPLIFIER PREAMPLIFIER NOISE DGA GAIN CONTROL OUTPUT STAGE ATTENUATOR SINGLE-SUPPLY OPERATION AND AC COUPLING POWER-UP/POWER-DOWN SEQUENCE LOGIC INTERFACES APPLICATIONS INFORMATION EVALUATION BOARD CONNECTING THE EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE
AD8260 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VS (supply voltage) = 3.3 V, TA = 25°C, CL = 5 pF, f = 10 MHz, preamplifier gain = 2×, RFB1 and RFB2 of the preamplifier = 100 Ω, RLOAD of the driver amplifier = 500 Ω, TX and RX enabled, unless otherwise specified.
5 20 VOUT = 200mV p-p T = +25°C T = –40°C 4 RTO 15 ) ) 3 B d T = +105°C /√Hz ( V n RTI IN 10 ( E GA 2 IS NO 5 1 0
3
0
6
100k 1M 10M 100M 200M
00
100k 1M 10M 50M
2- -00
FREQUENCY (Hz)
19
FREQUENCY (Hz)
92 07 071 Figure 3. Small-Signal Frequency Response at Three Temperatures of the Figure 6. Input-Referred and Output-Referred Noise of the High Current High Current Driver—See Figure 51 Driver—See Figure 52
5 100 VOUT = 200mV p-p VS = +3.3V 4 ) (Ω 10 ) 3 V B S = +5V d DANCE ( E IN P VS = ±5V M GA I 2 UT P 1 UT O 1 0
4
0.1
7
100k 1M 10M 100M 200M
00
100k 1M 10M 100M
2- -00
FREQUENCY (Hz)
19
FREQUENCY (Hz)
92 07 71 0 Figure 4. Small-Signal Frequency Response of the High Current Driver for Figure 7. Output Impedance of the High Current Driver Three Supply Voltages—See Figure 51 See Figure 53
5 –20 VLOAD = 1V p-p; RLOAD = 50Ω VLOAD = 1V p-p; RLOAD = 500Ω V –30 LOAD = 2V p-p; RLOAD = 50Ω 4 VLOAD = 2V p-p; RLOAD = 500Ω Bc) d –40 N ( IO ) –50 3 B RT 2V p-p d ( O T IN S –60 HD2 GA HD3 2 C DI NI –70 O –80 1 HARM 1V p-p –90 0
5
–100 100k 1M 10M 100M 200M
00
10 100 1k
2- 8
FREQUENCY (Hz)
19
LOAD RESISTANCE (Ω)
00 07 2- 19 07 Figure 5. Large-Signal Frequency Response of the High Current Driver for Two Figure 8. Harmonic Distortion (HD2, HD3) vs. Load Resistance for the High Values of Output Voltage and Two Values of Load Resistance—See Figure 51 Current Driver—See Figure 54 Rev. B | Page 8 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION OVERVIEW HIGH CURRENT DRIVER AMPLIFIER PRECAUTIONS TO BE OBSERVED DURING HALF-DUPLEX OPERATION VMID BUFFER PREAMPLIFIER PREAMPLIFIER NOISE DGA GAIN CONTROL OUTPUT STAGE ATTENUATOR SINGLE-SUPPLY OPERATION AND AC COUPLING POWER-UP/POWER-DOWN SEQUENCE LOGIC INTERFACES APPLICATIONS INFORMATION EVALUATION BOARD CONNECTING THE EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE