9 Electrical Characteristics

This section provides an overview of the IS20xxS SoC electrical characteristics.

Table 9-1. Absolute Maximum Ratings
Parameter	Symbol	Minimum	Maximum	Unit
Digital core supply voltage	VDD_CORE	0	1.35	V
RF supply voltage	VCC_RF	0	1.35	V
SAR ADC supply voltage	SAR_VDD	0	2.1	V
Codec supply voltage	VDDA/VDDAO	0	3.3	V
I/O supply voltage	VDD_IO	0	3.6	V
Buck supply voltage	BK_VDD	0	4.3	V
Supply voltage	LDO31_VIN	0	4.3	V
Battery input voltage	BAT_IN	0	4.3	V
Adapter input voltage	ADAP_IN	0	7.0	V
Storage temperature	T_STORE	-65	+150	℃
Operation temperature	T_OPERATION	-20	+70	℃

Note: Stresses listed on the preceding table cause permanent damage to the device. This is a stress rating only. The functional operation of the device at those or any other conditions and those indicated in the operation listings of this specification are not implied. Exposure to maximum rating conditions for extended periods affects device reliability.

The following tables provide the recommended operating conditions and the electrical specifications of the IS20xxS SoC.

Table 9-2. Recommended Operating Condition
Parameter	Symbol	Minimum	Typical	Maximum	Unit
Digital core supply voltage	VDD_CORE	1.14	1.2	1.26	V
RF supply voltage	VCC_RF	1.22	1.28	1.34	V
SAR ADC supply voltage	SAR_VDD	1.62	1.8	1.98	V
Codec supply voltage	VDDA/VDDAO	2.7	2.8	3.0	V
I/O supply voltage	VDD_IO	2.7	3.0	3.3	V
Buck supply voltage	BK_VDD	3	3.7	4.25	V
Supply voltage	LDO31_VIN	3	3.7	4.25	V
Battery input voltage	BAT_IN	3	3.7	4.25	V
Adapter input voltage	ADAP_IN	4.5	5	5.5	V
Operation temperature	T_OPERATION	-20	+25	+70	℃

Note: All these supply voltages are programmed through the EEPROM parameters.

Table 9-3. Buck Switching Regulator
Parameter	Minimum	Typical	Maximum	Unit
Input voltage	3.0	3.7	4.25	V
Output voltage (I_load = 70 mA and V_in = 4V)	1.7	1.8	2.05	V
Output voltage accuracy	—	±5	—	%
Output voltage adjustable step	—	50	—	mV/Step
Output adjustment range	-0.1	—	+0.25	V
Average load current (I_LOAD)	120	—	—	mA
Conversion efficiency (BAT = 3.8V and I_load = 50 mA)	—	88⁽¹⁾	—	%
Quiescent current (PFM)	—	—	40	μA
Output current (peak)	200	—	—	mA
Shutdown current	—	—	<1	μA

Note:

Test condition: SAR_VDD = 1.8V and temperature = +25℃.
These parameters are characterized, but not tested in manufacturing.

Table 9-4. Low-dropout Regulator
Parameter		Minimum	Typical	Maximum	Unit
Input Voltage		3.0	3.7	4.25	V
Output Voltage	CODEC_VO	—	2.8	—	V
Output Voltage	IO_VO	—	2.8	—	V
Output Accuracy (V_IN = 3.7V, I_LOAD = 100 mA and +27℃)		—	±5	—	%
Output current (average)		—	—	100	mA
Drop-out voltage (I_load = maximum output current)		—	—	300	mV
Quiescent current (excluding load and I_load < 1 mA)		—	45	—	μA
Shutdown current		—	—	<1	μA

Note:

Test condition: SAR_VDD = 1.8V and temperature = +25℃.
These parameters are characterized, but not tested in manufacturing.

Table 9-5. Battery Charger
Parameter		Minimum	Typical	Maximum	Unit
Input voltage (ADAP_IN)		4.5	5.0	5.5	V
Supply current to charger only		—	3	4.5	mA
Maximum battery fast charge current (ENX2 = 0)	Headroom > 0.7V (ADAP_IN = 5V)	170	200	240	mA
Maximum battery fast charge current (ENX2 = 0)	Headroom = 0.3V (ADAP_IN = 4.5V)	160	180	240	mA
Maximum battery fast charge current (ENX2 = 1)	Headroom > 0.7V (ADAP_IN = 5V)	300	350	420	mA
Maximum battery fast charge current (ENX2 = 1)	Headroom = 0.3V (ADAP_IN = 4.5V)	180	220	270	mA
Trickle charge voltage threshold		—	3	—	V
Battery charge termination current (% of fast charge current)		—	10	—	%

Note:

Headroom = V_{ADAP_IN} – V_BAT.
ENX2 is not allowed to be enabled when V_{ADAP_IN} – V_BAT > 2V.
These parameters are characterized, but not tested in manufacturing.

Table 9-6. LED Diver
Parameter	Minimum	Typical	Maximum	Unit
Open-drain voltage	—	—	3.6	V
Programmable current range	0	—	5.25	mA
Intensity control	—	16	—	step
Current step	—	0.35	—	mA
Power-down open-drain current	—	—	1	μA
Shutdown current	—	—	1	μA

Note:

Test condition: SAR_VDD = 1.8V and temperature = +25℃.
These parameters are characterized, but not tested in manufacturing.

Table 9-7. Audio Codec Digital-to-Analog Converter
Parameter (Condition)⁽¹⁾		Minimum	Typical	Maximum	Unit
Over-sampling rate		—	128	—	f_s
Resolution		16	—	20	Bits
Output sample rate		8	—	48	kHz
Signal-to-noise Ratio ⁽²⁾ (SNR at capless mode) for 48 kHz		—	96	—	dB
Signal-to-noise Ratio ⁽²⁾ (SNR at single-ended mode) for 48 kHz		—	98	—	dB
Digital gain		-54	—	4.85	dB
Digital gain resolution		—	2 to 6	—	dB
Analog gain		-28	—	3	dB
Analog gain resolution		—	1	—	dB
Output voltage full-scale swing (AVDD = 2.8V)		495	742.5	—	mV rms
Maximum output power (16Ω load)		—	34.5	—	mW
Maximum output power (32Ω load)		—	17.2	—	mW
Allowed load	Resistive	8	16	O.C.	Ω
Allowed load	Capacitive	—	—	500	pF
THD+N (16Ω load)		—	—	0.05	%
Signal-to-noise Ratio (SNR at 16Ω load)	—	—	—	96	dB

Note:

T = +25℃, VDD = 3.0V, 1 kHz sine wave input and Bandwidth = 20 Hz – 20 kHz.
f_in = 1 kHz, Bandwidth = 20 Hz – 20 kHz, A-weighted, THD + N < 0.01%, 0 dBFS signal and Load = 100 kΩ.
These parameters are characterized, but not tested in manufacturing.

Table 9-8. Audio Codec Analog-to-Digital Converter
Parameter (Condition)⁽¹⁾	Minimum	Typical	Maximum	Unit
Resolution	—	—	16	Bit
Output sample rate	8	—	48	kHz
Signal-to-noise Ratio ⁽²⁾ (SNR at MIC or Line-in mode)	—	90	—	dB
Digital gain	-54	—	4.85	dB
Digital gain resolution	—	2 to 6	—	dB
MIC boost gain	—	20	—	dB
Analog gain	—	—	60	dB
Analog gain resolution	—	2.0	—	dB
Input full scale at maximum gain (differential)	—	4	—	mVrms
Input full scale at minimum gain (differential)	—	800	—	mVrms
3 dB bandwidth	—	20	—	kHz
Microphone mode (input impedance)	—	24	—	kΩ
THD+N (microphone input) at 30 mVrms input	—	0.02	—	%

Note:

T = +25℃, VDD = 3.0V, 1 kHz sine wave input and Bandwidth = 20 Hz – 20 kHz.
f_in = 1 kHz, Bandwidth = 20 Hz – 20 kHz, A-weighted and THD + N < 1%, 150 mVpp input.
These parameters are characterized, but not tested in manufacturing.

Table 9-9. Single-Channel Class–D Amplifier
Parameter (Condition)		Minimum	Typical	Maximum	Unit
Standalone SNR (A-weighting)		—	100	—	dB
Gain		—	12	—	dB
PSRR (217 Hz, 200 mV on PVDD)		—	70	—	dB
Efficiency	4Ω	80	—	85	%
Efficiency	8Ω	85	—	90	%
Supply voltage		3.0	3.7	4.5	V
Load		—	4.0	—	Ω
Quiescent current (1 channel)		—	2.0	—	mA
Sample frequency		—	250	—	kHz
Over current limits		—	2.3	—	A
Shutdown current		—	1.0	—	μA

Note:

Test condition: PVDD_CDA = 4.2V and temperature = 25℃.
These parameters are characterized but not tested in manufacturing.

Table 9-10. Transmitter Section for BDR and EDR
Parameter	Minimum	Typical	Maximum	Bluetooth Specification	Unit
Maximum RF transmit power	—	3.0	4.0	-6 to 4	dBm
Relative transmit power	-4	-1.2	1	-4 to 1	dB

Note:

The RF Transmit power is calibrated during production using the MP tool software and MT8852 Bluetooth test equipment.
Test condition: VCC_RF = 1.28V and temperature = +25℃.

Table 9-11. Receiver Section for BDR and EDR
Parameter	Packet Type	Minimum	Typical	Maximum	Bluetooth Specification	Unit
Sensitivity at 0.1% BER	GFSK	—	-90	—	≤-70	dBm
Sensitivity at 0.01% BER	π/4 DQPSK	—	-91	—	≤-70	dBm
Sensitivity at 0.01% BER	8 DPSK	—	-82	—	≤-70	dBm

Note:

Test condition: VCC_RF = 1.28V and temperature = +25℃.
These parameters are characterized, but not tested in manufacturing.

Table 9-12. System Current Consumption
System Status	Typical	Maximum	Unit
System Off mode	2	5	μA
Standby mode	0.8	—	mA
Link mode	0.4	—	mA
SCO Link	7.8	—	mA
A2DP Link (V_p-p = 200 mV; 1k tone signal)	10.7	—	mA

Note:

Consider the current consumption values with the IS2010 EVB as a test platform.
Test condition: BAT_IN = 3.8V, link with the HTC EYE smartphone. The distance between the smartphone and EVB is 30 cm.

IS2008S/IS2010S/IS2013S/IS2015S

9 Electrical Characteristics