Preliminary Information
Electrical Characteristics
†
- Gain Setting Amplifier
Characteristics
1
2
3
4
5
6
7
8
9
Input Leakage Current
Input Resistance
Input Offset Voltage
Power Supply Rejection Ratio
Common Mode Rejection
DC Open Loop Voltage Gain
Unity Gain Bandwidth
Output Voltage Swing
Maximum Capacitive Load (GS)
Sym
I
IN
R
in
V
OS
PSRR
CMRR
A
VOL
f
C
V
O
C
L
R
L
V
CM
50
1.0
V
DD
-1.0
MT8843
Min
Typ
‡
Max
1
Units
µA
MΩ
Test Conditions
V
SS
≤
V
IN
≤
V
DD
10
25
40
40
32
0.3
0.5
V
DD
-0.5
mV
dB
dB
dB
MHz
V
pp
pF
kΩ
V
Load
≥
50kΩ
1kHz ripple on V
DD
V
CMmin
≤
V
IN
≤
V
CMmax
100
10 Maximum Resistive Load (GS)
11 Common Mode Range Voltage
† Electrical characteristics are over recommended operating conditions, unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
AC Electrical Characteristics
†
- FSK Detection
Characteristics
1 Input Detection Level
Sym
Min
-40
-37.78
10.0
1188
1188
2178
1200
1200
2200
Typ
‡
Max
Units
Notes*
-8
dBV
a
1
-5.78 dBm
b
398.1 mVrms
1212
1212
2222
baud
Hz
Hz
Hz
Hz
dB
1,2
2 Transmission Rate
3 Input Frequency Detection
Bell 202 1 (Mark)
Bell 202 0 (Space)
CCITT V.23 1 (Mark)
CCITT V.23 0 (Space)
4 Input Noise Tolerance
SNR
FSK
1280.5 1300 1319.5
2068.5 2100 2131.5
20
a. dBV = decibels above or below a reference voltage of 1Vrms.
b. dBm = decibels above or below a reference power of 1mW into 600 ohms. 0dBm = 0.7746Vrms.
*Notes
1. Both mark and space have the same amplitude.
2. Band limited random noise (200-3400Hz). Present when FSK signal is present. Note that the BT band is 300-3400Hz, the Bellcore
band is 200-3200Hz.
† AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
5-33
MITEL [ MITEL NETWORKS CORPORATION ]
