m-8888 Clare, Inc., m-8888 Datasheet - Page 10

• Manufacturer Part Number: m-8888
• Description: Dtmf Transeivers
• Manufacturer: Clare, Inc.

M-8888
10
AC Characteristics (Continued)
Electrical Characteristics - Gain Setting Amplifier
Timing Diagrams
Input leakage current (V
Input resistance
Input offset voltage
Power supply rejection (1 KHz)
Common mode rejection (-3.0 V≤ V
DC open-loop voltage gain
Unity gain bandwidth
Output voltage swing (R
Maximum capcitive load, GS
Maximum resistive load, GS
Common mode range (no load)
DTMF Clock
Crystal clock frequency
Clock input rise time (external clock)
Clock input fall time (external clock)
Clock input duty cycle (external clock)
Capacitive load, OSC2
Voltages referenced to V
*Typical values are for use as design aids only and are not guaranteed or subject to production testing.
Notes:
10. Referenced to the lowest amplitude tone in the DTMF signal.
11. Referenced to the minimum valid accept level.
All voltages referenced to V
*Typical values are for use as design aids only, and are not guaranteed or subject to production testing.
1. dBm = decibels above or below a reference power of 1 mW into a 600 Ω load.
2. Digit sequence consists of all 16 DTMF tones.
3. Tone duration = 40 ms. Tone pause = 40 ms.
4. Nominal DTMF frequencies are used.
5. Both tones in the composite signal have an equal amplitude.
6. The tone pair is deviated by ± 1.5% ± 2 Hz.
7. Bandwidth limited (3 kHz) Gaussian noise.
8. The precise dial tone frequencies are 350 and 440 Hz (± 2%).
9. For an error rate of less than 1 in 10,000.
Parameter
SS
unless otherwise noted. V
SS
Parameter
unless otherwise noted. V
SS
L
≥ 100 KΩ to V
≤ V
IN
≤ V
DD
DD
IN
)
= 5.0V ± 5%; V
DD
≤ 3.0V)
SS
= 5.0V ± 5%; V
)
SS
= 0 V; f
SS
= 0 V; f
C
= 3.579545 MHz; T
C
= 3.579545 MHz; T
www.clare.com
Symbol
CMRR
PSRR
A
BW
V
V
R
V
I
C
R
VOL
IN
CM
OS
Symbol
IN
O
L
L
DC
t
t
C
LHCL
HLCL
f
LO
A
C
CL
= -40°C to +85°C
A
= -40°C to +85°C
Min
-
-
-
-
-
-
-
-
-
-
-
3.5759
Min
40
-
-
-
Typ*
100
100
1.5
4.5
3.0
10
25
60
60
65
50
3.5795
Typ*
50
-
-
-
Max
3.5831
Max
110
100
60
30
-
-
-
-
-
-
-
-
-
-
-
Units
Units
MHz
MHz
MΩ
mV
V
V
kΩ
nA
dB
dB
dB
ns
ns
pF
pF
%
PP
PP
Rev. 1