TL851CN - TI

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

Part No

TL851CN
Manufacturer

TI
ChipWorker Part#

CW15656411
Category

RF Module, IC, Accessory
Package

PDIP-16
Description

Sonar Ranging Control 1150mW 16Pin PDIP Tube
Documentation

Datasheet

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TL851CN Specifications

Attribute	Attribute Value

Part Number	TL851CN
Manufacturer	TI
ChipWorker Part#	CW15656411
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)
Number of Outputs	1 Output
Number of Bits	4 Bit
Power Dissipation	1150 mW
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
	expand all
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 TL851 is an economical digital I2L ranging control integrated circuit designed for use with the Texas Instruments TL852 sonar ranging receiver integrated circuit.
The TL851 is designed for distance measurement from six inches to 35 feet. The device has an internal oscillator that uses a low-cost external ceramic resonator. With a simple interface and a 420-kHz ceramic resonator, the device will drive a 50-kHz electrostatic transducer.
The device cycle begins when Initiate (INIT) is taken to the high logic level. There must be at least 5 ms from initial power-up (VCC) to the first initiate signal in order for all the device internal latches to reset and for the ceramic-resonator-controlled oscillator to stabilize. The device will transmit a burst of 16 pulses each time INIT is taken high.
The oscillator output (OSC) is enabled by INIT. The oscillator frequency is the ceramic resonator frequency divided by 8.5 for the first 16 cycles (during transmit) and then the oscillator frequency changes to the ceramic resonator frequency divided by 4.5 for the remainder of the device cycle.
When used with an external 420-kHz ceramic resonator, the device internal blanking disables the receive input (REC) for 3.8 ms after initiate to exclude false receive inputs that may be caused by transducer ringing. The internal blanking feature also eliminates echos from objects closer than 1.3 feet from the transducer. If it is necessary to detect objects closer than 1.3 feet, then the internal blanking may be shortened by taking the blanking inhibit (BINH) high, enabling the receive input. The blanking input (BLNK) may be used to disable the receive input and reset ECHO to a low logic level at any time during the device cycle for selective echo exclusion or for a multiple-echo mode of operation.
The device provides a synchronous 4-bit gain control output (12 steps) designed to control the gain of the TL852 sonar ranging receiver integrated circuit. The digital gain control waveforms are shown in Figure 2 with the nominal transition times from INIT listed in the Gain Control Output Table.
The threshold of the internal receive level detector is 1.2 V. The TL851 operates over a supply voltage range of 4.5 V to 6.8 V and is characterized for operation from 0°C to 40°C.
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