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Part Number: AS2701A
Description: The signal transmission between the master and the slaves in the AS-Interface system is performed by a...
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AS2701A
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DataSheet
General Description
AS2701A General Description
The signal transmission between the master and the slaves in the AS-Interface system is performed by a parallel two-line wire (AS-Interface line) to which the IC is connected only via a polarity protection diode and a suppressor diode. The line is powered by a direct dc voltage of up to 33.1 V, on which data pulses with signal amplitudes of (3...8) Vpp are superimposed. The IC extracts its own power and the power for peripherals from the line and detects the bus signals.
The AS-Interface slave IC consists of the following blocks:
· Receive Block
· Transmit Block
· Digital Logic Block
· Emergency Control Block
· Internal and External Power Supply with Signal decoupling
· Oscillator
· Power on Reset
· High Voltage I/O
AS2701A Maximum Ratings
|
Symbol |
Parameter |
Min |
Max |
Unit |
Note |
|
VLTGP |
Positive Voltage |
-0.3 |
40 |
V |
1 |
|
VLTGPOV |
Positive Impulse Voltage |
50 |
V |
2 | |
|
Vin1 |
Voltage at D0. D3, P0. D3,DSTBn,PSTBn,CDC,OUT, TEST |
VLTGN - 0.3 |
VLTGP + 0.3 |
V |
Vin40V |
|
Vin2 |
Voltage at OSC1, OSC2, SDA, SCL, U5R |
VLTGN - 0.3 |
7 |
V |
|
|
Iin |
Input Current on every Pin |
-25 |
25 |
mA |
|
|
H |
Non-Condensated Humidity |
3 | |||
|
ESD |
Electrostatic Discharge |
1000 |
V |
4 | |
|
STG |
Storing Temperature |
-55 |
125 |
°C |
|
|
lead |
Soldering Temperature |
260 |
°C |
5 | |
|
Ptot |
Power Dissipation |
1 |
W |
6 |
1 A polarity protection diode is to be used externally
2 Impulse width: 50 s; repetition rate: 0.5 Hz
3 Defined in DIN 40040 cond. F
4 HBM; R = 1.5 k; C = 100pF
5 260 °C for 10 s (reflow and wave soldering), 360 °C for 3 s (manual soldering)
6 SOIC 20: Rthja = 64.5 °K/W typ.
AS2701A Features
` Simple two-wire bus (AS-Interface line)
` Transmission of both power and signal on the AS-Interface line
` Decoupling of power and signal by the IC without additional external devices
` Transmitting protocol for using the IC and the AS-Interface master in the transmit/receive modes
` Switching of max. 31 AS-Interface slave ICs on one bus possible
` Power supply of peripheral devices from the AS-Interface slave IC of up to 35mA@24V
` Only few external devices necessary for operation (quartz, 4 capacitors, E2PROM)
` Storing of the configuration data and the slave address in one E2PROM
` Quartz oscillator for 5.333 MHz without external capacitances
` Standards: AS-InterfaceSpec V2.0 and EN 50295
` Transmission of both power and signal on the AS-Interface line
` Decoupling of power and signal by the IC without additional external devices
` Transmitting protocol for using the IC and the AS-Interface master in the transmit/receive modes
` Switching of max. 31 AS-Interface slave ICs on one bus possible
` Power supply of peripheral devices from the AS-Interface slave IC of up to 35mA@24V
` Only few external devices necessary for operation (quartz, 4 capacitors, E2PROM)
` Storing of the configuration data and the slave address in one E2PROM
` Quartz oscillator for 5.333 MHz without external capacitances
` Standards: AS-InterfaceSpec V2.0 and EN 50295
AS2701A Connection Diagram
AS2701A
PDF/DataSheet Download
- Datasheet: AS2701A
- File Size: 157547 KB
- Manufacturer: AMSCO [austriamicrosystems AG]
- Click here to Download
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