TL852CN - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

TL852CN
Manufacturer

TI
ChipWorker Part#

CW32094196
Category

RF Module, IC, Accessory
Package

PDIP-16
Description

RF IC Sonar Ranging Receiver Sonar Control 20kHz ~ 90kHz 16-PDIP
Documentation

Datasheet

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TL852CN Specifications

Attribute	Attribute Value

Part Number	TL852CN
Manufacturer	TI
ChipWorker Part#	CW32094196
Category	RF Module, IC, Accessory
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	16 Pin
Case/Package	PDIP-16
Frequency	20kHz ~ 90kHz
Supply Voltage (DC)	4.50V (min)
Power Dissipation	1150 mW
Output Voltage (Max)	0.3 V
Output Current (Max)	1 µA
Operating Temperature (Max)	40 ℃
Operating Temperature (Min)	0 ℃
Power Dissipation (Max)	1150 mW
Supply Voltage (Max)	6.8 V
Supply Voltage (Min)	4.5 V
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Size-Length	19.69 mm
Size-Width	6.6 mm
Size-Height	5.08 mm
Operating Temperature	0℃ ~ 40℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

Product Description

The TL852 is an economical sonar ranging receiver integrated circuit for use with the TL851 control integrated circuit. A minimum of external components is required for operation, and this amplifier easily interfaces to Polaroid"s 50-kHz electrostatic transducer. An external 68-k.
Digital control of amplifier gain is provided with gain control inputs GCA, GCB, GCC, and GCD. These inputs must be driven synchronously (all inputs stable within 0.1 us) to avoid false receive output signals due to invalid logic counts. This can be done easily with the TL851 control integrated circuit. A plot showing relative gain for the various gain steps versus time can be seen in Figure 2. To dampen ringing of the 50-kHz electrostatic transducer, a 5-k resistor from G1IN to XIN is recommended.
An external parallel combination of inductance and capacitance between LC and VCC provides an amplifier with an externally controlled gain and Q. This not only allows control of gain to compensate for attenuation of signal with distance, but also maximizes noise and sidelobe rejection. Care must be taken to accurately tune the L-C combination at operating frequency or gain and Q will be greatly reduced at higher gain steps.
AC coupling between stages of the amplifier is accomplished with a 0.01-mF capacitor for proper biasing.
The receive output is normally held at a low level by an internal 1-uA current source. When an input of sufficient amplitude is received, the output is driven alternately by the 1-uA discharge current and a 50-uA charging current. A 1000-pF capacitor is required from REC to GND to integrate the received signal so that one or two noise pulses will not be recognized.
XIN provides clamping for the transformer secondary when used for transducer transmit drive as shown in Figure 4 of the SN28827 data sheet.
The TL852 is characterized for operation from 0°C to 40°C.
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