Datasheet

AD5700/AD5700-1 Data Sheet
Rev. F | Page 10 of 24
Figure 9. Supply Currents vs. Supply Voltage—Internal Reference
Figure 10. Current in Tx Mode vs. Resistive Load
Figure 11. Current in Tx Mode vs. Capacitive Load
Figure 12. Input Filter Frequency Response
Figure 13. Carrier Detect—Voltage vs. Current, 2 V
Figure 14. Carrier Detect—Voltage vs. Current, 3.3 V
200
180
160
140
120
100
80
60
40
20
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
V
CC
= IOV
CC
(V)
I
CC
AND IOI
CC
(µA)
10435-026
T
A
= 25°C
V
CC
= IOV
CC
= 1.71V TO 5.5V
DEV 1 INT REF
REG_CAP IS CONNECTED
TO V
CC
FOR SUPPLIES OF ≤ 2.0V
DEMOD I
CC
AND IOI
CC
MOD I
CC
AND IOI
CC
700
600
500
400
300
200
100
0
0 200 400 600 800 1000 1200
R
LOAD
(Ω) WITH 22nF TO GND
I
CC
CURRENT (µA)
10435-009
HART_OUT
2.2µF
22nF R
LOAD
TXD = 1
TXD = 0
T
A
= 25°C; V
CC
= IOV
CC
= 3.3V; INT V
REF
CLK CONFIG = XTAL OSCILLATOR
IOI
CC
= 41µA
250
225
200
175
150
125
100
75
50
25
0
0 10 20 30 40
50 60
C
LOAD
(nF)
I
CC
CURRENT (µA)
10435-010
T
A
= 25°C; V
CC
= IOV
CC
= 3.3V; INT V
REF
CLK CONFIG = XTAL OSCILLATOR
CAPACITIVE LOAD ONLY
IOI
CC
= 41µA
TXD = 1
TXD = 0
0
–2
–4
–6
–8
–10
–12
–14
–16
–20
–18
100 1k 10k
FREQUENCY (Hz)
GAIN (dB)
10435-011
EXTERNAL FILTER
INTERNAL FILTER
T
A
= 25°C
V
CC
= IOV
CC
= 3.3V
INT V
REF
2.5
0
0.5
1.0
1.5
2.0
0 2.01.81.61.41.21.00.80.60.40.2
10435-032
CD VOLTAGE (V)
CD CURRENT (mA)
T
A
= 25°C
V
CC
= IOV
CC
= 2V
3.5
3.0
2.5
0
0.5
1.0
1.5
2.0
0 7654321
10435-033
CD VOLTAGE (V)
CD CURRENT (mA)
T
A
= 25°C
V
CC
= IOV
CC
= 3.3V