Datasheet

AFE5804
SBOS442C –JUNE 2008–REVISED OCTOBER 2011 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At AVDD_5V = 5.0V, AVDD1 = AVDD2 = DVDD = 3.3V, LVDD = 1.8V, TGC mode I, single-ended input into LNA, ac-coupled
(1.0μF), V
CNTL
= 1.0V, f
IN
= 5MHz, Clock = 40MSPS, 50% duty cycle, LPF = 12.5MHz, internal reference mode, ISET = 56kΩ,
LVDS buffer setting = 3.5mA, and ambient temperature T
A
= +25°C, unless otherwise noted.
AFE5804
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DYNAMIC PERFORMANCE
f
IN
= 2MHz; –1dBFS
59.7 dBFS
(V
CNTL
= 1.0V, PGA = 30dB)
Signal-to-noise ratio SNR
f
IN
= 5MHz; –1dBFS 59.5 dBFS
f
IN
= 10MHz; –1dBFS 59.1 dBFS
f
IN
= 5MHz; –1dBFS
–45 dBFS
(V
CNTL
= 0.35V, PGA = 30dB)
f
IN
= 5MHz; –1dBFS
Second-harmonic distortion HD2 –50 –70 dBFS
(V
CNTL
= 1V, PGA = 30dB)
f
IN
= 5MHz; –6dBFS
–61 –70 dBFS
(V
CNTL
= 1V, PGA = 20dB)
f
IN
= 5MHz; –1dBFS
–43 dBFS
(V
CNTL
= 0.35V, PGA = 30dB)
f
IN
= 5MHz; –1dBFS
Third-harmonic distortion HD3 –43 –50 dBFS
(V
CNTL
= 1V, PGA = 30dB)
f
IN
= 5MHz; –6dBFS
–61 –70 dBFS
(V
CNTL
= 1V, PGA = 20dB)
f
1
= 4.99MHz at –6dBFS,
Intermodulation distortion IMD3 58 dBc
f
2
= 5.01MHz at –32dBFS
Crosstalk f
IN
≤ 5MHz, V
CNTL
= 0.6V, –6dBFS –67 dBc
CW—SIGNAL CHANNELS
Input voltage noise (CW) e
n
R
S
= 0Ω, f = 2MHz 1.1 nV/√Hz
Output noise correlation factor Summing of eight channels 0.6 %
At V
IN
= 100mV
PP
13.8 mA/V
Output transconductance I
OUT
/V
IN
At V
IN
= 270mV
PP
12.2 mA/V
Dynamic CW output current, max I
OUTAC
2.9 mA
PP
Static CW output current (sink) I
OUTDC
0.9 mA
Output common-mode voltage
(3)
VCM 2.5 V
Output impedance 50 kΩ
Output capacitance 10 pF
INTERNAL REFERENCE VOLTAGES (ADC)
Reference top VREFT 0.5 V
Reference bottom VREFB 2.5 V
VREFT – VREFB 1.95 2 2.05 V
Common-mode voltage (internal) V
CM
1.425 1.5 1.575 V
V
CM
output current ±2 mA
(3) CW outputs require an externally applied bias voltage of +2.5V.
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