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ZHCSAQ1D February 2013 – July 2022 INA231

PRODUCTION DATA

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)

YFF|12
YFD|12

散热焊盘机械数据 (封装 | 引脚)

订购信息

7.5 Electrical Characteristics

at T_A = 25°C, V_S = 3.3 V, V_IN+ = 12 V, V_SENSE = (V_IN+ – V_IN–) = 0 mV, and V_BUS = 12 V (unless otherwise noted)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
SHUNT INPUT
	Shunt voltage input		–81.92		81.9175	mV
CMR	Common-mode rejection	V_IN+ = 0 V to 28 V	100	120		dB
V_OS	Shunt offset voltage, RTI⁽¹⁾			±10	±50	μV
V_OS	Shunt offset voltage, RTI⁽¹⁾	T_A = –40°C to +125°C		0.1	0.5	μV/°C
PSRR	vs power supply	V_S = 2.7 V to 5.5 V		10		μV/V
BUS INPUT
	Bus voltage input range⁽²⁾		0		28	V
V_OS	Bus offset voltage, RTI⁽¹⁾			±5	±30	mV
V_OS	Bus offset voltage, RTI⁽¹⁾	T_A = –40°C to +125°C		10	40	μV/°C
PSRR	vs power supply			2		mV/V
	BUS pin input impedance			830		kΩ
INPUT
I_IN+, I_IN-	Input bias current			10		μA
	Input leakage⁽³⁾	(V_IN+) + (V_IN–), Power-Down mode		0.1	0.5	μA
DC ACCURACY
	ADC native resolution			16		Bits
	1 LSB step size	Shunt voltage		2.5		μV
	1 LSB step size	Bus voltage		1.25		mV
	Shunt voltage gain error			0.2%	0.5%
	Shunt voltage gain error	T_A = –40°C to +125°C		10	50	ppm/°C
	Bus voltage gain error			0.2%	0.5%
	Bus voltage gain error	T_A = –40°C to +125°C		10	50	ppm/°C
	Differential nonlinearity			±0.1		LSB
	ADC conversion time	CT bit = 000		140	154	μs
		CT bit = 001		204	224	μs
		CT bit = 010		332	365	μs
		CT bit = 011		588	646	μs
		CT bit = 100		1.1	1.21	ms
		CT bit = 101		2.116	2.328	ms
		CT bit = 110		4.156	4.572	ms
		CT bit = 111		8.244	9.068	ms
SMBus
	SMBus timeout⁽⁴⁾			28	35	ms
DIGITAL INPUT/OUTPUT
	Input capacitance			3		pF
	Leakage input current	0 ≤ V_IN ≤ V_S		0.5	2	μA
V_IH	High-level input voltage		1.4		6	V
V_IL	Low-level input voltage		–0.5		0.4	V
V_OL	Low-level output voltage (SDA, ALERT)	I_OL = 3 mA	0		0.4	V
	Hysteresis			500		mV
POWER SUPPLY
	Quiescent current			330	420	μA
	Quiescent current	Power-Down mode		3	7	μA
	Power-on reset threshold			2		V

(1) RTI = Referred-to-input.

(2) Although the input range is 28 V, the full-scale range of the ADC scaling is 40.96 V. Do not apply more than 28 V. See the Basic Analog-to-Digital Converter (ADC) Functions section for more details

(3) Input leakage is positive (current flowing into the pin) for the conditions shown at the top of this table. Negative leakage currents can occur under different input conditions.

(4) SMBus timeout in the INA231 resets the interface any time SCL is low for more than 28 ms.