米6体育平台手机版

ZHCSOX4B September 2021 – March 2022 CC2651R3

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

RKP|40
- MPQF261B
RGZ|48
- MPQF123F

散热焊盘机械数据 (封装 | 引脚)

RKP|40
- QFND309E
RGZ|48
- QFND031W

订购信息

8.15.1.1 Analog-to-Digital Converter (ADC) Characteristics

T_c = 25 °C, V_DDS = 3.0 V and voltage scaling enabled, unless otherwise noted.⁽¹⁾
Performance numbers require use of offset and gain adjustements in software by TI-provided ADC drivers.

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
	Input voltage range		0		VDDS	V
	Resolution			12		Bits
	Sample Rate				200	ksps
	Offset	Internal 4.3 V equivalent reference⁽²⁾		–0.24		LSB
	Gain error	Internal 4.3 V equivalent reference⁽²⁾		7.14		LSB
DNL⁽⁴⁾	Differential nonlinearity			>–1		LSB
INL	Integral nonlinearity			±4		LSB
ENOB	Effective number of bits	Internal 4.3 V equivalent reference⁽²⁾, 200 kSamples/s, 9.6 kHz input tone		9.8		Bits
		Internal 4.3 V equivalent reference⁽²⁾, 200 kSamples/s, 9.6 kHz input tone, DC/DC enabled		9.8
		VDDS as reference, 200 kSamples/s, 9.6 kHz input tone		10.1
		Internal reference, voltage scaling disabled, 32 samples average (software), 200 kSamples/s, 300 Hz input tone		11.1
		Internal reference, voltage scaling disabled, 14-bit mode, 200 kSamples/s, 300 Hz input tone ⁽⁵⁾		11.3
		Internal reference, voltage scaling disabled, 15-bit mode, 200 kSamples/s, 300 Hz input tone ⁽⁵⁾		11.6
THD	Total harmonic distortion	Internal 4.3 V equivalent reference⁽²⁾, 200 kSamples/s, 9.6 kHz input tone		–65		dB
		VDDS as reference, 200 kSamples/s, 9.6 kHz input tone		–70
		Internal reference, voltage scaling disabled, 32 samples average, 200 kSamples/s, 300 Hz input tone		–72
SINAD, SNDR	Signal-to-noise and distortion ratio	Internal 4.3 V equivalent reference⁽²⁾, 200 kSamples/s, 9.6 kHz input tone		60		dB
		VDDS as reference, 200 kSamples/s, 9.6 kHz input tone		63
		Internal reference, voltage scaling disabled, 32 samples average (software), 200 kSamples/s, 300 Hz input tone		68
SFDR	Spurious-free dynamic range	Internal 4.3 V equivalent reference⁽²⁾, 200 kSamples/s, 9.6 kHz input tone		70		dB
		VDDS as reference, 200 kSamples/s, 9.6 kHz input tone		73
		Internal reference, voltage scaling disabled, 32 samples average (software), 200 kSamples/s, 300 Hz input tone		75
	Conversion time	Serial conversion, time-to-output, 24 MHz clock		50		Clock Cycles
	Current consumption	Internal 4.3 V equivalent reference⁽²⁾		0.39		mA
	Current consumption	VDDS as reference		0.56		mA
	Reference voltage	Equivalent fixed internal reference (input voltage scaling enabled). For best accuracy, the ADC conversion should be initiated through the TI-RTOS API in order to include the gain/offset compensation factors stored in FCFG1		4.3⁽²⁾⁽³⁾		V
	Reference voltage	Fixed internal reference (input voltage scaling disabled). For best accuracy, the ADC conversion should be initiated through the TI-RTOS API in order to include the gain/offset compensation factors stored in FCFG1. This value is derived from the scaled value (4.3 V) as follows: V_ref= 4.3 V × 1408 / 4095		1.48		V
	Reference voltage	VDDS as reference, input voltage scaling enabled		VDDS		V
	Reference voltage	VDDS as reference, input voltage scaling disabled		VDDS / 2.82⁽³⁾		V
	Input impedance	200 kSamples/s, voltage scaling enabled. Capacitive input, Input impedance depends on sampling frequency and sampling time		>1		MΩ

(1) Using IEEE Std 1241-2010 for terminology and test methods

(2) Input signal scaled down internally before conversion, as if voltage range was 0 to 4.3 V

(3) Applied voltage must be within Absolute Maximum Ratings at all times

(4) No missing codes

(5) ADC_output = Σ(4ⁿ samples ) >> n, n = desired extra bits