Part Number: AD8304

Function: 160 dB Range (100 pA –10 mA) Logarithmic Converter

Package: Miniature 14-Lead Package (TSSOP) Type

Manufacturer: Analog Devices

Pinouts:

 

Description

The AD8304 is a monolithic logarithmic detector optimized for the measurement of low frequency signal power in fiber optic systems. It uses an advanced translinear technique to provide an exceptionally large dynamic range in a versatile and easily used form. Its wide measurement range and accuracy are achieved using proprietary design techniques and precise laser trimming. In most applications only a single positive supply, VP, of 5 V will be required, but 3.0 V to 5.5 V can be used, and certain applications benefit from the added use of a negative supply, VN. When using low supply voltages, the log slope is readily altered to fit the available span. The low quiescent current and chip disable features facilitate use in battery-operated applications.

Features

1. Optimized for Fiber Optic Photodiode Interfacing
2. Eight Full Decades of Range
3. Law Conformance 0.1 dB from 1 nA to 1 mA
4. Single-Supply Operation (3.0 V– 5.5 V)
5. Complete and Temperature Stable
6. Accurate Laser-Trimmed Scaling:
7. Logarithmic Slope of 10 mV/dB (at VLOG Pin)
8. Basic Logarithmic Intercept at 100 pA
9. Easy Adjustment of Slope and Intercept
10. Output Bandwidth of 10 MHz, 15 V/s Slew Rate
11. 1-, 2-, or 3-Pole Low-Pass Filtering at Output
12. Miniature 14-Lead Package (TSSOP)
13. Low Power: ~4.5 mA Quiescent Current (Enabled)

Applications:

1. High Accuracy Optical Power Measurement
2. Wide Range Baseband Log Compression
3. Versatile Detector for APC Loops

Other data sheets are available within the file:

AD8304-EVAL, AD8304ARU, AD8304ARU-REEL, AD8304ARU-REEL7

AD8304 Datasheet PDF Download

Part Number: CS4398

Function: 120 dB, 192 kHz Multi-Bit DAC with Volume Control

Package: 28-pin TSSOP Type

Manufacturer: Cirrus Logic

Pinouts:

 

Description

The CS4398 is a complete stereo 24 bit/192 kHz digital to-analog system.

This D/A system includes digital deemphasis, half dB step size volume control, ATAPI channel mixing, selectable fast and slow digital interpolation filters followed by an oversampled multi-bit delta sigma modulator that includes mismatch shaping technology that eliminates distortion due to capacitor mismatch. Following this stage is a multi-element switched capacitor stage and low pass filter with differential analog outputs.

Features

1. Direct Stream Digital (DSD)

(1) Dedicated DSD Input Pins
(2) On-Chip 50 kHz Filter to Meet Scarlet Book SACD Recommendations
(3) Matched PCM and DSD Analog Output Levels
(4)  Non-Decimating Volume Control with 1/2 dB Step Size and Soft Ramp
(5) DSD Mute Detection
(6) Supports Phase-Modulated Inputs

Typical Applications:

1. DVD Players
2. SACD Players
3. A/V Receivers
4. Professional Audio Products

Other data sheets are available within the file: CDB4398, CS4398CZZ, CS4398CZZR

CS4398 Datasheet PDF Download