MT88E39 Data Sheet
10
Zarlink Semiconductor Inc.
† 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 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.
Notes*:
1. dBm = Decibels above or below a reference power of 1 mW into 600 Ω. 0 dBm = 0.7746 Vrms.
2. dBV = Decibels above or below a reference voltage of 1 Vrms. 0 dBV = 1 Vrms.
3. Input op-amp configured to 0 dB gain at Vdd = 5 V+/-10%, -3 dB at Vdd = 3 V+/-10%.
4. Mark and Space frequencies have the same amplitude.
5. Band limited random noise (200-3400 Hz). Present when FSK signal present.
6. OSC1 at 3.579545 MHz
±0.2%.
Electrical Characteristics
†
- Gain Setting Amplifier
Characteristics Sym. Min. Typ.
‡
Max. Units Test Conditions
1 Input Leakage Current I
IN
1 µAV
SS
≤ V
IN
≤ V
DD
2 Input Resistance R
in
5MΩ
3 Input Offset Voltage V
OS
25 mV
4 Power Supply Rejection Ratio PSRR 30 dB 1 kHz ripple on V
DD
5 Common Mode Rejection CMRR 30 dB V
CMmin
≤ V
IN
≤ V
CMmax
6 DC Open Loop Voltage Gain A
VOL
40 dB
7 Unity Gain Bandwidth f
C
0.2 MHz
8 Output Voltage Swing V
O
0.5
V
DD
-0.7
V Load ≥ 100 kΩ
9 Capacitive Load (GS) C
L
50 pF
10 Resistive Load (GS) R
L
100 kΩ
11 Common Mode Voltage Range V
CM
1.0
V
DD
-1.0
V
AC Electrical Characteristics
†
- FSK
Characteristics Sym. Min. Typ.
‡
Max. Units Notes*
1 Input Detection Level -37.78
-40
10
-1.78
-4
631
dBm
dBV
mVrms
1, 2, 3, 4
2 Input Baud Rate 1188 1200 1212 baud 6
3 Input Frequency Detection
Bell 202 1 (Mark)
Bell 202 0 (Space)
CCITT V.23 1 (Mark)
CCITT V.23 0 (Space)
1188
2178
1280.5
2068.5
1200
2200
1300
2100
1212
2222
1319.5
2131.5
Hz
Hz
Hz
Hz
4 Input Noise Tolerance
20 log SNR 20 dB 3, 4, 5
5Twist=
20 log -6 10 dB
V
Mark
V
Space
()
