BelaSigna R281
www.onsemi.com
2
Figures and Data
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Min Max Units
Input Voltage on any Digital Pin −0.3 3.8 V
Input Voltage on any Analog Pin −0.3 3.8 V
Input Voltage on any Supply Pin −0.3 3.8 V
Current on any Digital Pin ± 5 mA
Current on any Analog Pin ± 10 mA
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.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter Symbol Min Typ Max Units
Power Supply Applied to VBAT VBAT 1.75 1.8 1.98 V
Power Supply Applied to VDDO VDDO 1.62 1.8 3.63 V
Internal Oscillator Clock Frequency 1 2.56 20 MHz
Ambient Operating Temperature Range Ta −40 85 °C
Table 3. ESD AND LATCH−UP CHARACTERISTICS
Parameter Conditions Max Units
ESD – Human Body Model JEDEC JS*001*2010, all pins 2000 V
ESD – Charged Device Model JESD22*C101*E, all pins 750 V
ESD – Machine Model JESE22*A115*C, all pins 250 V
Latch*Up JEDEC STD*78, all pins ± 100 mA
Electrical Performance Specifications
Typical Values
Unless otherwise noted, Typ values specify the typical
values based on design and characterization data under
normal operating conditions. Normal operating conditions
include a supply voltage (VBAT) of 1.8 V and an operating
temperature of 25°C. For specific blocks, the details of the
normal operation conditions are described in their
respective sections.
Minimum and Maximum Values
Unless otherwise noted, Min and Max values specify the
designed range or measurement range and are guaranteed by
design and/or characterization.
Min and Max values specified may be based on factory
production test limits, design, or characterization data.
Normal Operating Conditions
Unless otherwise noted, normal operating conditions
indicate an ambient temperature Ta = 25°C and a supply
voltage VBAT = 1.8 V. VDDD and VDDA are calibrated to
their preset factory calibration settings and correspond to
their respective Typ values. VDDO is powered externally at
1.8 V. No external loads are applied to digital I/O or analog
pins.
Table 4. SYSTEM DC ELECTRICAL CHARACTERISTICS
Typical operating conditions (Ta = 25_C, VBAT=VDDO=1.8 V, VDDD=1.4 V) unless otherwise noted
Parameter Symbol Conditions Min Typ Max Units
Average Run Mode Current IDD VBAT=VDDA=1.8 V, charge pump disabled
Assumes a ratio of speech present versus
quiet environment of 20/80
170
mA
