u3760mb-n ATMEL Corporation, u3760mb-n Datasheet - Page 16

• Manufacturer Part Number: u3760mb-n
• Description: Low-voltage Standard Telephone Circuit
• Manufacturer: ATMEL Corporation

Electrical Characteristics Tone Ringer
f
U3760MB-N
Supply current,
outputs open
Switch-on threshold
Switch-off threshold
Ringing frequency
Audio sequence frequency
Turn-off delay
Range of external compo-
nents for R/C oscillator
16 (20)
RCK
VRING
VRIAC
g
OUT
= 4 kHz, V
Volt
Parameters
0
0
0
RING
= 20 V, T
p
V
V
V
R = 150 k , C = 1 nF
V
See figure 8
amb
RIAC
RIAC
RIAC
RIAC
Test Conditions / Pins
= 25 _ C, reference point GND, unless otherwise specified
Preliminary Information
= 20 V
> V
Melody
RON
Figure 8. Turn off delay time
t
off
Symbol
I
V
V
RING
f
f
t
Roff
f
Ron
1H
off
C
R
1L
2
1000
Min.
937
752
2.1
50
1010
Typ.
23.5
12.5
808
5.6
65
Rev. A1, 31-May-99
Max.
1083
2200
868
330
3.8
12459
t
t
t
Unit
mA
k
Hz
Hz
ms
pF
V
V
W