SA3291 Datasheet, PDF (4/20 Pages) ON Semiconductor – Preconfigured Wireless DSP System for Hearing Aids

AYRE SA3291
SPECIFICATIONS
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Value
Units
Operating Temperature Range
0 to +40
°C
Storage Temperature Range
−20 to +70
°C
Absolute Maximum Power Dissipation
50
mW
Maximum Operating Supply Voltage
1.65
VDC
Absolute Maximum Supply Voltage
1.8
VDC
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
WARNING: Electrostatic Sensitive Device − Do not open packages or handle except at a static−free workstation.
WARNING: Moisture Sensitive Device − RoHS Compliant; Level 4 MSL. Do not open packages except under controlled conditions.
Table 2. ELECTRICAL CHARACTERISTICS (Supply Voltage V_B = NV_B = 1.25 V; Temperature = 25°C)
Parameter
Symbol
Conditions
Min
Typ
Minimum Operating Supply Voltage
V_BOFF
Ramp down, audio path
Ramp down, control logic
0.93
0.95
0.77
0.80
Supply Voltage Turn On Threshold
EEPROM Burn Cycles
NV_BOFF
V_BON
NV_BON
−
Transceiver Operation
Ramp up, Zinc Air battery
Ramp up, Zinc Air battery
−
0.93
1.06
1.06
100 k
0.965
1.10
1.10
−
Flash−RAM Write/Erase Cycle
−
−
10 k
100 k
Low Frequency System Limit
−
DSP, Transceiver
−
125
High Frequency System Limit
−
DSP
−
−
−
Transceiver (−3 dB)
−
7
Total Harmonic Distortion
THD at Maximum Input
Clock Frequency
NFMI TRANSCEIVER
THD
THD_M
f_CLK
V_IN = −40 dBV
V_IN = −15 dBV, HRX − ON
−
−
−
−
−
3.78
−
Carrier Frequency
Modulation Scheme
f_C
−
−
10.597
−
TDMA, CPFSK
−
−
Supply Current in Sleep Mode
Supply Current in Standby Mode
Average Operating Current
I_sleep
I_standby
I_AVE
−
−
Bi−directional TDMA mode,
full chip operation
−
2
189
227
−
3.2
Transmitter Antenna Coil Voltage
V_TX
REGULATOR
AC Signal
−
−
Regulator Voltage
System PSRR
INPUT
V_REG
PSRR_SYS
−
1 kHz, Input referred, HRX enabled
0.87
−
0.90
70
Input Referred Noise
IRN
Bandwidth 100 Hz − 8 kHz
−
−108
Input Impedance
Anti−aliasing Filter Rejection
Crosstalk
Z_IN
1 kHz
−
3
−
f = f_CLK/2 − 8 kHz, V_IN = −40 dBV
−
80
−
Between both A/D and Mux
−
60
Maximum Input Level
−
−
−
−15
Max
0.97
0.83
1.0
1.16
1.14
−
−
−
16
−
1
3
4.10
−
−
−
273
−
12
0.93
−
−106
−
−
−
−
Units
V
V
cycles
cycles
Hz
kHz
%
%
MHz
MHz
−
mA
mA
mA
V_PP
V
dB
dBV
MW
dB
dB
dBV
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