NCN49599
www.onsemi.com
11
Table 12. RECEIVER EXTERNAL PARAMETERS
Parameter UnitMaxTypMinSymbolTest Conditions
Max. current delivered by REF_OUT I
Max_REF_OUT
−300 300
mA
Power supply rejection ratio of the
receiver input section
f = 50 Hz (Note 22)
PSRR
LPF_OUT
35 dB
f = 10 kHz (Note 22) 10 dB
AGC gain step AGC
step
5.3 6.7 dB
AGC range AGC
range
39.9 44.1 dB
Analog ground reference output voltage
Load current ±300 mA
V
REF_OUT
1.52 1.65 1.78 V
Signal to noise ratio Signal amplitude of 62.5% of the
full scale of the ADC
(Notes 20 and 23)
SN
AD_OUT
54 dB
Clipping level at the output of the gain
stage (RX_OUT)
V
CLIP_AGC_IN
1.05 1.65 V
PK
Receive cascade gain
(Note 24)
f = 10 kHz, A = 250 mVpk
f = 148.5 kHz, A = 250 mVpk
f = 195 kHz, A = 250 mVpk
f = 245 kHz, A = 250 mVpk
f = 500 kHz, A = 250 mVpk
f = 1 MHz
f = 2 MHz
V
RX_LPF_10kHz
V
RX_LPF_148.5kHz
V
RX_LPF_195kHz
V
RX_LPF_245kHz
V
RX_LPF_500kHz
V
RX_LPF_1000kHz
V
RX_LPF_2000kHz
−0.5
−1.3
−4.5
0
−36
−50
0.5
0.5
−1
−3
−18
dB
20.Input at RX_IN, no other external components.
21.Characterization data only. Not tested in production.
22.A sinusoidal signal of 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. The AGC gain is fixed at 42 dB.
23.These parameters will be tested in production with an input signal of 95 kHz and 1 V
PK
by reading out the digital samples at the output
of the ADC. The AGC gain is switched to 0 dB.
24.The cascade of the receive low−pass filter (LPF), AGC and low noise amplifier is production tested and must have a frequency characteris-
tic between the limits listed. The level is specified relative to the level at DC; the absolute output level will depend on the operating condition.
This test is done with the low−pass filter (LPF) tuned to include the CENELEC D−band.
Power−on−Reset (POR)
Table 13. POWER−ON−RESET
Parameter Test Conditions Symbol Min Typ Max Unit
POR threshold (Note 25)
V
DD
and V
DDA
rising V
PORH
2.7 V
V
DD
and V
DDA
falling V
PORL
2.1
Power supply rise time 0 to 3 V on both VDD and VDDA T
RPOR
1 ms
25.The nominal voltage on the pins VDD and VDDA (the digital and analog power supply) must be equal; both supply rails must be switched
together.
Digital Outputs: TDO, SCK, SDO, CSB, IO0..IO7
Table 14. DIGITAL OUTPUTS: TDO, SCK, SDO, CSB, IO0..IO7
Parameter Test Conditions Symbol Min Typ Max Unit
Low output voltage (Note 26) I
XOUT
= 4 mA V
OL
0.4 V
High output voltage (Note 26) I
XOUT
= −4 mA V
OH
0.85 V
DD
V
26.For IO0..IO7, this parameter only applies if the pin is configured as output pin by the firmware.
