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RFQ ListingAnalog ICs & Data Converters
AD8338ACPZ-R7 is the reel-packed 16-lead LFCSP version of the Analog Devices variable gain amplifier that spans 0 dB to 80 dB under analogue control, with a linear-in-dB slope of 12.5 mV/dB set by the voltage on the GAIN pin. It keeps a fully differential path from low frequency to 18 MHz on a single 3.0 V to 5.0 V rail, and integrates offset nulling and an automatic gain control loop so that a constant rms output can be held without external detector circuitry.
ManufacturerAnalog Devices
Package16-Lead LFCSP (3mm × 3mm w/ EP)
SeriesAD8338
Analog / Signal Chain Specifications
| Parameter | Value / Specification |
|---|---|
| Channels / Configuration | Single channel, fully differential path with single-ended drive option |
| Gain | Voltage-controlled 0 dB to 80 dB, linear-in-dB slope of 12.5 mV/dB |
| Bandwidth | 18 MHz small signal at VGAIN = 0.6 V |
| Noise | 4.5 nV/√Hz input referred at VGAIN = 0.6 V |
| Slew Rate | 50 V/µs peak at VGAIN = 0.6 V |
| Supply Voltage | 3.0 V to 5.0 V single supply |
| Quiescent Current | 3 mA at 40 dB gain |
| Output Swing | 1.4 V p-p differential; 0.7 V p-p single-ended |
| Internal Reference | 1.5 V |
| Integrated Functions | Offset correction (offset null) and automatic gain control |
| Operating Temperature | −40°C to +85°C |
| Package / Case | 16-Lead LFCSP (3mm × 3mm w/ EP) |
Analog Features & Applications
- Voltage-controlled gain range of 0 dB to 80 dB with a 12.5 mV/dB linear-in-dB slope
- Fully differential signal path operating from low frequency up to 18 MHz
- Input referred noise of 4.5 nV/√Hz, falling to 1.5 nV/√Hz with 50 Ω input resistors
- Single 3.0 V to 5.0 V supply consuming as little as 3 mA at 40 dB gain
- Offset correction pin and an automatic gain control loop hold a constant rms output
- Internal 1.5 V reference and a MODE pin that inverts the gain slope
- Internal summing nodes are accessible so gain, bandwidth and input impedance can be retuned
- 16-lead 3mm × 3mm LFCSP specified across the −40°C to +85°C industrial range
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