Texas Instruments TCM4300 manual Terminal Impedance, Function MIN TYP² MAX Unit, Lsb

2.4.3 Terminal Impedance

FUNCTION		MIN	TYP²	MAX	UNIT
Receive channel input impedance (single ended), RXIP/N and RXQP/N		40	70		kΩ
Transmit channel output impedance (single ended), TXIP/N and TXQP/N		40	50	100	Ω
FM input impedance, WBD		25	200		kΩ
MCLKOUT impedance	MCLKOUT at 3.3 V		240		Ω
	MCLKOUT at 5 V		180

² All typical values are at DVDD = 5 V, AVDD = 5 V, and TA = 25°C, unless otherwise specified.

2.4.4RXIP, RXIN, RXQP, and RXQN Inputs (AVDD = 3 V, 4.5 V, 5 V)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
Input voltage range			0.3		AVDD± 0.3	V
Input voltage for full-	Differential			0.5		Vp-p
scale digital output	Single ended			0.5
Nominal operating	Differential			0.125		Vp-p³
level	Single ended			0.125
Input CMRR (RXI, RXQ)			45			dB
Sampling frequency, SINT (digital				48.6		kHz
mode)
Sampling frequency, SINT (analog				40		kHz
mode)
Receive error vector magnitude (EVM)				5%	6%
I/Q sample timing skew		Input signal 0 ± 15 kHz		50		ns
A / D resolution				10		bits
Signal to noise-plus distortion		Input at full scale ± 1 dB	54	58		dB
Integral nonlinearity		0 dB to ± 60 dB input		1		LSB
Gain error (I or Q channel)					± 7%
Gain mismatch between I and Q					± 0.3	dB
Differential dc offset voltage					± 30	mV
FM input sensitivity, full scale				2.5		Vp-p
(￿ 14 kHz deviation)
FM input dc offset (relative to VHR)					± 80	mV
FM input idle channel noise, below					± 50	dB
full-scale input
FM gain error					± 6%
Power supply rejection		f = 0 kHz to 15 kHz		40		dB

³Provides 12 dB headroom for AGC fading conditions.

2±3