AFE5808ZCF datasheet(7/68 Pages) TI1

7 / 68 page

AFE5808

www.ti.com

SLOS688C – SEPTEMBER 2010 – REVISED APRIL 2012

ELECTRICAL CHARACTERISTICS (continued)

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

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

LPF Filter = 15MHz, low noise mode, VOUT = –1dBFS, internal 500Ω 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 = 5V, AVDD = 3.3V,

AVDD_ADC = 1.8V, DVDD = 1.8V

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNITS

AC ACCURACY

LPF Bandwidth tolerance

±5%

CH-CH group delay variation

2MHz to 15MHz

CH-CH Phase variation

15MHz signal

Degree

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

±0.5

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

–0.9

±0.5

0.9

Gain matching

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

–1.1

±0.5

1.1

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

±0.5

Gain matching

Channel-to-Channel

±0.25

Output offset

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

–75

LSB

AC PERFORMANCE

Fin = 2MHz; VOUT = -1dBFS

–60

Fin = 5MHz; VOUT = -1dBFS

–60

Fin = 5MHz; VIN = 500mVpp,

HD2

Second-Harmonic Distortion

dBc

–55

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

Fin = 5MHz; VIN = 250mVpp,

–55

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

Fin = 2MHz; VOUT = –1dBFS

–55

Fin = 5MHz; VOUT = –1dBFS

–55

Fin = 5MHz; VIN = 500mVpp,

HD3

Third-Harmonic Distortion

dBc

–55

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

Fin = 5MHz; VIN = 250mVpp,

–55

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

Fin = 2MHz; VOUT = –1dBFS

–55

THD

Total Harmonic Distortion

dBc

Fin = 5MHz; VOUT = –1dBFS

–55

f1 = 5MHz at –1dBFS,

IMD3

Intermodulation distortion

–60

dBc

f2 = 5.01MHz at –27dBFS

XTALK

Cross-talk

Fin = 5MHz; VOUT = –1dBFS

–65

Phase Noise

1kHz off 5MHz (VCNTL= 0V)

–132

dBc/Hz

LNA

Input Referred Voltage Noise

Rs = 0

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

0.63/0.70/0.9

nV/rtHz

High-Pass Filter

-3dB Cut-off Frequency

50/100/150/200

KHz

LNA linear output

Vpp

VCAT+ PGA

VCAT Input Noise

0dB/-40dB Attenuation

2/10.5

nV/rtHz

PGA Input Noise

24dB/30dB

1.75

nV/rtHz

-3dB HPF cut-off Frequency

KHz

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