AFE5808ZCF.B datasheet(7/75 Pages) TI2

7 / 75 page

AFE5808

www.ti.com

SLOS688D – SEPTEMBER 2010 – REVISED JANUARY 2014

ELECTRICAL CHARACTERISTICS (continued)

AVDD_5V = 5V, AVDD = 3.3V, AVDD_ADC = 1.8V, DVDD = 1.8V, AC-coupled with 0.1 µF at INP and bypassed to ground

with 15nF at INM, No active termination, VCNTL= 0 V, fIN= 5 MHz, LNA = 18 dB, PGA = 24 dB, 14 Bit, sample rate = 65 MSPS,

LPF Filter = 15 MHz, low noise mode, VOUT = –1 dBFS, internal 500-Ω CW feedback resistor, CMOS CW clocks, ADC

configured in internal reference mode, Single-ended VCNTL mode, VCNTLM = GND, at ambient temperature TA = 25°C,

unless otherwise noted. Min and max values are specified across full-temperature range with AVDD_5V = 5 V, AVDD = 3.3

V, AVDD_ADC = 1.8 V, DVDD = 1.8 V

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

AC ACCURACY

LPF Bandwidth tolerance

±5%

CH-CH group delay variation

2 to 15 MHz

CH-CH Phase variation

15-MHz signal

Degree

0 V < VCNTL< 0.1 V (Dev-to-Dev)

±0.5

0.1 V < VCNTL < 1.1 V (Dev-to-Dev)

–0.9

±0.5

0.9

Gain matching

0.1 V < VCNTL < 1.1 V (Dev-to-Dev), Temp = 0°C and 85°C

–1.1

±0.5

1.1

1.1 V < VCNTL < 1.5 V (Dev-to-Dev)

±0.5

Gain matching

Channel-to-Channel

±0.25

Output offset

VCNTL = 0, PGA = 30 dB, LNA = 24 dB

–75

LSB

AC PERFORMANCE

Fin = 2 MHz; VOUT = –1 dBFS

–60

Fin = 5 MHz; VOUT = –1 dBFS

–60

Fin = 5 MHz; VIN = 500 mVpp,

HD2

Second-Harmonic Distortion

dBc

–55

VOUT = –1 dBFS, LNA = 18 dB, VCNTL = 0.88 V

Fin = 5 MHz; VIN = 250 mVpp,

–55

VOUT = –1 dBFS, LNA = 24 dB, VCNTL= 0.88 V

Fin = 2 MHz; VOUT = –1 dBFS

–55

Fin = 5 MHz; VOUT = –1 dBFS

–55

Fin = 5 MHz; VIN = 500 mVpp,

HD3

Third-Harmonic Distortion

dBc

–55

VOUT = –1 dBFS, LNA = 18 dB, VCNTL = 0.88 V

Fin = 5 MHz; VIN = 250 mVpp,

–55

VOUT = –1 dBFS, LNA = 24 dB, VCNTL = 0.88 V

Fin = 2 MHz; VOUT = –1 dBFS

–55

THD

Total Harmonic Distortion

dBc

Fin = 5 MHz; VOUT = –1 dBFS

–55

f1 = 5 MHz at –1 dBFS,

IMD3

Intermodulation distortion

–60

dBc

f2 = 5.01 MHz at –27 dBFS

XTALK

Cross-talk

Fin = 5 MHz; VOUT = –1 dBFS

–65

Phase Noise

1 kHz off 5 MHz (VCNTL= 0 V)

–132

dBc/Hz

LNA

Input Referred Voltage Noise

Rs = 0

Ω, f = 2 MHz, Rin = High Z, Gain = 24/18/12 dB

0.63/0.70/0.9

nV/rtHz

High-Pass Filter

–3 dB Cut-off Frequency

50/100/150/200

kHz

LNA linear output

Vpp

VCAT+ PGA

VCAT Input Noise

0 dB/–40 dB Attenuation

2/10.5

nV/rtHz

PGA Input Noise

24 dB/30 dB

1.75

nV/rtHz

-3 dB HPF cut-off Frequency

KHz

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