TCM4300 Datasheet, PDF (17/69 Pages) Texas Instruments – Advanced RF Cellular Telephone Interface Circuit (ARCTIC )

2.4.3 Terminal Impedance
FUNCTION
MIN TYP^† 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
MCLKOUT at 5 V
240
Ω
180
† _{All typical values are at DVDD = 5 V, AVDD = 5 V, and TA = 25°C, unless otherwise specified.}
2.4.4 RXIP, RXIN, RXQP, and RXQN Inputs (AV_DD = 3 V, 4.5 V, 5 V)
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
UNIT
Input voltage range
Input voltage for full-
scale digital output
Differential
Single ended
0.3
AVDD– 0.3
0.5
0.5
V
Vp-p
Nominal operating
level
Differential
Single ended
0.125
0.125
Vp-p^†
Input CMRR (RXI, RXQ)
45
dB
Sampling frequency, SINT (digital
mode)
48.6
kHz
Sampling frequency, SINT (analog
mode)
40
kHz
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}
( 14-kHz deviation)
2.5
Vp-p
FM input dc offset (relative to VHR)
± 80
mV
FM input idle channel noise, below
full-scale input
– 50
dB
FM gain error
± 6%
Power supply rejection
f = 0 kHz to 15 kHz
40
dB
† _{Provides 12-dB headroom for AGC fading conditions.}
2–3