Datasheet AD8338 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Low Power, 18 MHz Variable Gain Amplifier |
| Pages / Page | 20 / 3 — Data Sheet. AD8338. SPECIFICATIONS AC SPECIFICATIONS. Table 1. Parameter. … |
| Revision | B |
| File Format / Size | PDF / 483 Kb |
| Document Language | English |
Data Sheet. AD8338. SPECIFICATIONS AC SPECIFICATIONS. Table 1. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
Model Line for this Datasheet
Text Version of Document
Data Sheet AD8338 SPECIFICATIONS AC SPECIFICATIONS
VBAT = 3.0 V, TA = 25°C, CL = 2 pF on OUTP and OUTM, RL = ∞, MODE pin high, RIN = 2 × 500 Ω, VGAIN = 0.6 V, differential operation, unless otherwise noted.
Table 1. Parameter Test Conditions/Comments Min Typ Max Unit
INPUT INTERFACE INPD, INMD, INPR, INMR pins Input Voltage Range 3 V p-p −3 dB Bandwidth 18 MHz Input Resistance Standard configuration using the INPR and 0.8 1 1.2 kΩ INMR inputs Input Capacitance 2 pF OUTPUT INTERFACE OUTP and OUTM pins Small Signal Bandwidth VGAIN = 0.6 V 18 MHz Peak Slew Rate VGAIN = 0.6 V 50 V/µs Peak-to-Peak Output Swing Differential output 2.8 V p-p Common-Mode Voltage 1.5 V Input-Referred Voltage Noise Using Internal Resistors VGAIN = 1.1 V 4.5 nV/√Hz VGAIN = 0.6 V 15 nV/√Hz VGAIN = 0.1 V 150 nV/√Hz Using External 47 Ω Resistors VGAIN = 1.1 V 1.5 nV/√Hz Offset Voltage RTO, VGAIN = 0.1 V, offset null enabled −10 +10 mV RTO, VGAIN = 0.6 V, offset null enabled −10 +10 mV RTO, VGAIN = 0.1 V, offset null disabled −50 +50 mV RTO, VGAIN = 0.6 V, offset null disabled −200 +200 mV POWER SUPPLY VBAT 3.0 5.0 V IVBAT Min gain, VGAIN = 0.1 V 6.0 8.0 mA Mid gain, VGAIN = 0.6 V 3.0 3.8 mA Max gain, VGAIN = 1.1 V 4.5 6.0 mA GAIN CONTROL Gain Range Standard configuration using the INPR and 0 80 dB INMR inputs Gain Span 80 dB Gain Voltage VGAIN relative to COMM 0.1 1.1 V Gain Slope 77 80 83 dB/V 12 12.5 13 mV/dB Gain Accuracy Standard configuration using the INPR and −2 +0.5 +2 dB INMR inputs; 0.1 V < VGAIN < 1.1 V VREF REFERENCE OUTPUT Output Voltage 1.5 V Output Current 5 mA Accuracy 2 % DETO OUTPUT CURRENT ±10 µA MODE INPUT Logic High 2.5 VBAT V Logic Low COMM 0.6 V AGC CONTROL MODE = 0 V Maximum Target Amplitude Expected rms output value for target = 1.0 V rms VAGC − VREF = 1.0 V Rev. A | Page 3 of 20 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications AC Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Introduction Overall Structure of the AD8338 VGA Core Normal Operating Conditions INPR, INMR, INPD, and INMD Pins FBKP, FBKM, OUTP, and OUTM Pins Linear-in-dB Gain Control, GAIN Pin Inversion of the Gain Slope, MODE Pin Offset Correction Circuit, OFSN Pin AGC Circuit, VAGC Pin Internal Reference, Pin VREF Explanation of the Gain Function Effects of Using External Resistors Adjusting The Output Common-Mode Voltage Applications Information Simple On-Off Keyed (OOK) Receiver Interfacing the AD8338 to an ADC Outline Dimensions Ordering Guide
VBAT = 3.0 V, TA = 25°C, CL = 2 pF on OUTP and OUTM, RL = ∞, MODE pin high, RIN = 2 × 500 Ω, VGAIN = 0.6 V, differential operation, unless otherwise noted.
Table 1. Parameter Test Conditions/Comments Min Typ Max Unit
INPUT INTERFACE INPD, INMD, INPR, INMR pins Input Voltage Range 3 V p-p −3 dB Bandwidth 18 MHz Input Resistance Standard configuration using the INPR and 0.8 1 1.2 kΩ INMR inputs Input Capacitance 2 pF OUTPUT INTERFACE OUTP and OUTM pins Small Signal Bandwidth VGAIN = 0.6 V 18 MHz Peak Slew Rate VGAIN = 0.6 V 50 V/µs Peak-to-Peak Output Swing Differential output 2.8 V p-p Common-Mode Voltage 1.5 V Input-Referred Voltage Noise Using Internal Resistors VGAIN = 1.1 V 4.5 nV/√Hz VGAIN = 0.6 V 15 nV/√Hz VGAIN = 0.1 V 150 nV/√Hz Using External 47 Ω Resistors VGAIN = 1.1 V 1.5 nV/√Hz Offset Voltage RTO, VGAIN = 0.1 V, offset null enabled −10 +10 mV RTO, VGAIN = 0.6 V, offset null enabled −10 +10 mV RTO, VGAIN = 0.1 V, offset null disabled −50 +50 mV RTO, VGAIN = 0.6 V, offset null disabled −200 +200 mV POWER SUPPLY VBAT 3.0 5.0 V IVBAT Min gain, VGAIN = 0.1 V 6.0 8.0 mA Mid gain, VGAIN = 0.6 V 3.0 3.8 mA Max gain, VGAIN = 1.1 V 4.5 6.0 mA GAIN CONTROL Gain Range Standard configuration using the INPR and 0 80 dB INMR inputs Gain Span 80 dB Gain Voltage VGAIN relative to COMM 0.1 1.1 V Gain Slope 77 80 83 dB/V 12 12.5 13 mV/dB Gain Accuracy Standard configuration using the INPR and −2 +0.5 +2 dB INMR inputs; 0.1 V < VGAIN < 1.1 V VREF REFERENCE OUTPUT Output Voltage 1.5 V Output Current 5 mA Accuracy 2 % DETO OUTPUT CURRENT ±10 µA MODE INPUT Logic High 2.5 VBAT V Logic Low COMM 0.6 V AGC CONTROL MODE = 0 V Maximum Target Amplitude Expected rms output value for target = 1.0 V rms VAGC − VREF = 1.0 V Rev. A | Page 3 of 20 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications AC Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Introduction Overall Structure of the AD8338 VGA Core Normal Operating Conditions INPR, INMR, INPD, and INMD Pins FBKP, FBKM, OUTP, and OUTM Pins Linear-in-dB Gain Control, GAIN Pin Inversion of the Gain Slope, MODE Pin Offset Correction Circuit, OFSN Pin AGC Circuit, VAGC Pin Internal Reference, Pin VREF Explanation of the Gain Function Effects of Using External Resistors Adjusting The Output Common-Mode Voltage Applications Information Simple On-Off Keyed (OOK) Receiver Interfacing the AD8338 to an ADC Outline Dimensions Ordering Guide
