MT88E43
Data Sheet
Electrical Characteristics† - Gain Setting Amplifier
Characteristics
Sym Min Max Units
Test Conditions
1 Input Leakage Current
2 Input Resistance
3 Input Offset Voltage
4 Power Supply Rejection Ratio
IIN
1
µA
Rin
10
MΩ
VOS
25
mV
PSRR 40
dB
5 Common Mode Rejection
CMRR 40
dB
6 DC Open Loop Voltage Gain
AVOL
30
dB
7 Unity Gain Bandwidth
fC
0.3
MHz
8 Output Voltage Swing
VO
0.5
VDD-0.5
Vpp
9 Maximum Capacitive Load (GS)
CL
100
pF
10 Maximum Resistive Load (GS)
RL
50
kΩ
11 Common Mode Range Voltage
VCM
1.0 VDD-1.0
V
† Electrical characteristics are over recommended operating conditions, unless otherwise stated.
VSS ≤ VIN ≤ VDD
1kHz ripple on VDD
VCMmin ≤ VIN ≤ VCMmax
Load ≥ 50kΩ
AC Electrical Characteristics† - FSK Detection
Characteristics
Sym Min
1 Input Detection Level
2 Transmission Rate
3 Input Frequency Detection
Bell 202 1 (Mark)
Bell 202 0 (Space)
-40
-37.78
10.0
1188
1188
2178
Typ‡
1200
1200
2200
Max Units
-8 dBVa 1,3
-5.78 dBmb
398.1 mVrms
1212 baud
1212 Hz
2222 Hz
Notes*
(Space)
CCITT V.23 1 (Mark)
CCITT V.23 0
1280.5 1300 1319.5 Hz
2068.5 2100 2131.5 Hz
4 Signal to Noise Ratio
SNRFSK 20
dB 1,2
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 0-4kHz.
3. Production tested at VDD=3V ±10%, 5V ±10%.
† AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡ Typical figures are nominal values and are for design aid only: not guaranteed and not subject to production testing.
AC Electrical Characteristics† - Dual Tone Alert Signal Timing
Characteristics
Sym
Min Max
1 Alert Signal present detect time
2 Alert Signal absent detect time
*Notes
1. Refer to Figures 16 and 19
tDP
0.5
10
tDA
0.1
8
Units
ms 1
ms 1
Notes*
5-68