ON Semiconductor NCN49597, Руководство пользователя

Страница: 11 / 28

NCN49597
http://onsemi.com
11
Receiver External Parameters: Pin RX_IN, RX_OUT, REF_OUT
Table 9. RECEIVER EXTERNAL PARAMETERS
Parameter Test Conditions Symbol Min Typ Max Unit
Input offset voltage 42 dB AGC gain = 42 dB V
OFFS_RX_IN
5 mV
Input offset voltage 0 dB AGC gain = 0 dB V
OFFS_RX_IN
50 mV
Max. peak input voltage (corres-
ponding to 62.5% of the SD full
scale)
AGC gain = 0 dB (Note 9) V
MAX_RX_IN
0.85 1.15 Vp
Input referred noise of the analog
receiver path
AGC gain = 42 dB
(Notes 9 and 10)
NF
RX_IN
150 nV/
Ǡ
Hz
Input leakage current of receiver
input
I
LE_RX_IN
− 1 1 m A
Max. current delivered by
REF_OUT
I
Max_REF_OUT
− 300 300 mA
Power supply rejection ratio of the
receiver input section
AGC gain = 42 dB (Note 11)
PSRR
LPF_OUT
10 dB
AGC gain = 42 dB (Note 12) 35
AGC gain step AGC
step
5.7 6.3 dB
AGC range AGC
range
39.9 44.1 dB
Analog ground reference output
voltage
V
REF_OUT
1.52 1.78 V
Signal to noise ratio at 62.5 % of
the SD full scale
(Notes 9 and 13) SN
AD_OUT
54 dB
Clipping level at the output of the
gain stage (RX_OUT)
V
CLIP_AGC_IN
1.15 1.65 Vp
9. Input at RX_IN, no other external components.
10.Characterization data only. Not tested in production.
11. A sinusoidal signal of 10 kHz and 100 mVpp is injected between VDDA and VSSA. The signal level at the differential LPF_OUT and
REF_OUT output is measured to determine the parameter.
12.A sinusoidal signal of 50 Hz and 100 mVpp is injected between VDDA and VSSA. The signal level at the differential LPF_OUT output is
measured to determine the parameter.
13.These parameters will be tested in production with an input signal of 95 kHz and 1 Vp by reading out the digital samples at the point AD_OUT
with the default settings of T_RX_MOD[7], SDMOD_TYP, DEC_TYP, and COR_F_ENA. The AGC gain is switched to 0 dB.
The receive LPF AGC + low noise amplifier must have a frequency characteristic between the limits listed below.
The absolute output level depends on the operating condition.
Table 10. RECEIVER FREQUENCY CHARACTERISTICS
Frequency (kHz)
Attenuation
Unit
Min Max
10 − 0.5 0.5 dB
95 − 1.3 0.5 dB
130 − 4.5 − 2.0 dB
165 − 3.0 dB
330 − 18.0 dB
660 − 36.0 dB
1000 − 50 dB
2000 − 55 dB