TCM4300 Datasheet, PDF (18/69 Pages) Texas Instruments – Advanced RF Cellular Telephone Interface Circuit (ARCTIC )

2.4.5 Transmit I and Q Channel Outputs
PARAMETER
Peak output voltage full scale, centered at VCM
Differential
Single ended
Nominal output-level (constellation radius) centered ^Differential
at VCM
Single ended
Low-level drift
Transmit error vector magnitude (EVM)
Transmit DACs I and Q resolution
S/(N+D) ratio at differential outputs
Gain error (I or Q channel)
Gain mismatch between I and Q
Gain sampling mismatch between I and Q
Zero code error, I to Q, with respect to other channel (differential or
single ended)
Residual offset error, I or Q, with respect to VCM
Load impedance, between P and N terminals
Transmit offset DACs I and Q resolution
Transmit offset DACs I and Q average step size
Transmit offset DACs differential nonlinearity
Transmit offset DACs integral nonlinearity
MIN
TYP
MAX
2.24
1.12
1.5
0.75
± 200
3%
4%
8
48
52
± 8% ± 12%
± 0.3
20
± 1.1
± 0.55
10
6
5.0
± 1.1
± 1.1
UNIT
Vp
V
PPM/°C
bits
dB
dB
ns
LSB
LSB
kΩ
bits
mV
LSB
LSB
2.4.6 Auxiliary D/A Converters
PARAMETER
Output range
TEST CONDITIONS
AVDD > 3 V^†,
AVDD > 4.5 V^†,
AVDD > 5 V^†,
AUXFS [1:0] = 00
AUXFS [1:0] = 10
AUXFS [1:0] = 11
MIN TYP
0.2
0.2
0.2
Resolution AGC, AFC, PWRCONT
DACs
8
Resolution LCDCONTR DAC
4
Gain + offset error (full scale) AGC,
AFC, PWRCONT DAC
Gain + offset error (full scale)
LCDCONTR DAC
Differential nonlinearity
± 0.75
Integral nonlinearity
† _{Range settings depends only on AUXFS [1:0]. The supply voltage is not detected.}
± 0.75
MAX
2.5
4
4.5
± 3%
± 7%
±1
±1
UNIT
V
bits
bits
LSB
LSB
2–4