MFG:TOSHIBA Package Cooled:DIP D/C:88
MFG: TOSHIBA
Package Cooled: DIP
D/C: 88
Description: The AD694 is a monolithic current transmitter that acceptshigh level signal inputs to drive a st...
The AD694 is a monolithic current transmitter that accepts high level signal inputs to drive a standard 420 mA current oop for the control of valves, actuators, and other devices com-monly used in process control. The input signal is buffered by an input amplifier that can be used to scale the input signal or buffer the output from a current mode DAC. Precalibrated in-put spans of 0 V to 2 V and 0 V to 10 V are selected by simple pin strapping; other spans may be programmed with external esistor.
The output stage compliance extends to within 2 V of VS and its special design allows the output voltage to extend below com-mon in dual supply operation. An alarm warns of an open 4-to-20 mA loop or noncompliance of the output stage.Active laser trimming of the AD694's thin film resistors results n high levels of accuracy without the need for additional adjust-ments and calibration. An external pass transistor may be used with the AD694 to off-load power dissipation, extending the emperature range of operation.
The AD694 is the ideal building block for systems requiring noise immune 420 mA signal transmission to operate valves,actuators, and other control devices, as well as for the transmis-sion of process parameters such as pressure, temperature, or low. It is recommended as a replacement for discrete designs in a variety of applications in industrial process control, factory automation, and system monitoring.
The AD694 is available in hermetically sealed, 16-pin cerdip and plastic SOIC, specified over the 40°C to +85°C industrial emperature range, and in a 16-pin plastic DIP, specified over he 0°C to +70°C temperature range.
| INPUT CHARACTERISTICS Input Voltage Range Input Bias Current Either Input, TMIN to TMAX Offset Current, TMIN to TMAX Offset Current Drift Input Impedance |
0.2 Vs2.0 V Vs2.5 V |
0.2 VS2.0 V VS2.5 V 1.5 5 ±0.1 ±1 ±1.0 ±5.0 5 |
V nA nA pA/°C M? |
| OUTPUT CHARACTERISTICS Operating Current Range Specified Performance Output Voltage Compliance Output Impedance, 420 mA Current Limit (@ 2 * FS Overdrive Slew Rate |
0 23 4 20 Vs6V Vs-2V 0 50.0 24 44 1.3 |
0 23 |
mA mA V M? mA mA/s |
420 mA, 020 mA Output Ranges
Precalibrated Input Ranges:
0 V to 2 V, 0 V to 10 V
Precision Voltage Reference
Programmable to 2.000 V or 10.000 V
Single or Dual Supply Operation
Wide Power Supply Range: +4.5 V to +36 V
Wide Output Compliance
Input Buffer Amplifier
Open-Loop Alarm
Optional External Pass Transistor to Reduce
Self-Heating Errors
0.002% typ Nonlinearity
AD694
PDF/DataSheet Download
The AD693AQ is is a monolithic signal conditioning circuit which accepts low-level inputs from a variety of transducers to control a standard 420 mA, two-wire current loop. It is is packaged in a 20-pin ceramic side-brazed DIP,20-pin Cerdip, and 20-pin LCCC ...
IC SGNL COND 4-20MA TX 20-CLCC
IC SGNL COND 4-20MA TX 20-CDIP
The AD693 is a monolithic signal conditioning circuit which ccepts low-level inputs from a variety of transducers to control a tandard 420mA, two-wire current loop. An on-chip voltage eference and auxiliary amplifier are provided for transducer excitation up...
The AD688SQ883 belongs to AD688 family, which is a high precision ± 10 V tracking reference. Low tracking error, low initial error and low temperature drift give the AD688 reference absolute ± 10 V accuracy performance previously unavailable in monolithic fo...
The AD688SQ is one member of the AD688 family which is designed as the high precision ±10 V tracking reference that includes the basic reference cell and three additional amplifiers. Also this device includes the basic reference cell and three additional amp...
Price: 5.35-8.05 USD
CMOS 64K (8LX8) STATIC RAM, DIP, 80/100ns Access times, Low power consumption
Price: 0.9-1.5 USD
dual comparator, SIP8, pin compatible, dual power supplies, 2V to 36V, 25mA
Price: 2.3-2.6 USD
Programmable Configuration PROM, SSOP20, –0.5 to +4.0 V
Price: 0.5-1 USD
LB1356CF, DIP, Alcatel-Lucent Enterprise , Integrated Circuits
Price: 0.35-0.4 USD
square trimming potentiometer, DIP, 2 MOhms, 0.5 Watt
Price: 0.7-1.1 USD
8-SOIC, Integrated Device Technology, 551MILFT, 160 MHz
Price: 3.2-3.8 USD
Quad, Low Voltage, Subscriber Line Audio-Processing Circuit, QFP64, 3.3 V CMOS technology
Price: 4.8-6 USD
Network Processor, BGA, -0.3 V to 3.6V
Price: 55-65 USD
LDMOS power transistor, SOT608B, 65 V, Integrated ESD protection
Price: 0.3-1 USD
Power Mosfet, D2PAK, 30 V
Price: 0.1-0.2 USD
2.7 V to 5.5 V, 90mW, intelligent power module, YPPD-J018C, LG Electronics
Price: 1-1.15 USD
TOPSwitch-GX, extended power, design flexible, TO220, integrated off-line switcher, 100 mA, 9 V
