AFE032 datasheet(3/77 Pages) TI1

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AFE032

www.ti.com

SBOS669A – AUGUST 2013 – REVISED DECEMBER 2013

ELECTRICAL CHARACTERISTICS: Transmitter

At TCASE = +25°C, VPAVS = 15 V, and VAVDD = VDVDD = 3.3 V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DAC

Resolution

12-bit DAC, internal VREF = 0.7 V

165

171

176

µV

Data rate(1)

DAC pin high, 12-bit word

4.8

5.2

MSPS

Gain error

Full-scale range, TJ = –40°C to +125°C

–2%

±0.5%

DAC OUTPUT

Output resistance

G = 1, f = 100 kHz

TX_PGA INPUT

(AGND +

(AVDD – 0.15) /

Input voltage range

0.15) /

gain

G = 1.15 V/V

G = 2.3 V/V

Input resistance

G = 3.25 V/V

G = 4.6 V/V

Gain

1.15, 2.3, 3.25, 4.6(2)

V/V

Includes DAC, programmable filter,

Gain error

–2%

±0.1%

and TX_PGA for all gains, TJ = –40°C to +125°C

Includes DAC, programmable filter,

Gain error drift

–10

±3

+10

ppm/°C

and TX_PGA for all gains, TJ = –40°C to +125°C

TX_PGA FREQUENCY RESPONSE

CL = 20 pF, G = 1.15 V/V,

MHz

TJ = –40°C to +125°C

CL = 20 pF, G = 2.3 V/V,

21.5

MHz

TJ = –40°C to +125°C

Bandwidth(3)

CL = 20 pF, G = 3.25 V/V,

17.5

MHz

TJ = –40°C to +125°C

CL = 20 pF, G = 4.6 V/V,

15.5

MHz

TJ = –40°C to +125°C

TX PATH TRANSMITTER NOISE(4)

CEN-A

35 kHz to 95 kHz

370

µVRMS

CEN-B

95 kHz to 125 kHz

220

µVRMS

CEN-C

125 kHz to 140 kHz

160

µVRMS

Integrated noise

CEN-D

140 kHz to 148 kHz

µVRMS

at PA output(5)

ARIB STD-T84

35 kHz to 420 kHz

640

µVRMS

FCC-LOW

35 kHz to 125 kHz

384

µVRMS

G3-FCC

150 kHz to 490 kHz

565

µVRMS

POWER AMPLIFIER (PA) INPUT

(PA_GND

(PA_VS – 0.4) /

Input voltage range

For linear operation

+ 0.4) /

gain

Input impedance

PA FREQUENCY RESPONSE

Bandwidth

ILOAD = 0 mA

3.4

3.82

4.23

MHz

Slew rate

PA_VS = 24 V, 20-V step

V/µs

Full-power bandwidth

PA_VS = 24 V, VOUT = 20 VPP

MHz

PSRR

Power-supply rejection ratio

RTI, dc to f = 50 kHz

(1)

Refer to the Application Information section.

(2)

This parameter is from DAC_OUT to TX_F_OUT. This parameter includes the LPF gain error and is the dc gain. Adding LPF causes

some loss of gain flatness.

(3)

This parameter is internal to the device. Bandwidth is designed and simulated over corners to ensure a low-distortion PGA in the

application.

(4)

Includes the DAC, programmable filter, TX_PGA, and PA noise-reducing capacitor = 1 nF from DAC_NRF to ground, PA_NRF to

ground, and TX_RF_NRF to ground.

(5)

Includes the DAC, TX_PGA (gain = 4.6), LPF, and PA.

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