AD7741 Analog Devices, AD7741 Datasheet - Page 3

• Manufacturer Part Number: AD7741
• Description: Single and Multichannel/ Synchronous Voltage-to-Frequency Converters
• Manufacturer: Analog Devices

AD7742–SPECIFICATIONS
Parameter
DC PERFORMANCE
ANALOG INPUTS (V
VOLTAGE REFERENCE
LOGIC OUTPUT
LOGIC INPUT
CLOCK FREQUENCY
POWER REQUIREMENTS
N
1
2
3
4
5
6
7
Specifications subject to change without notice
REV. 0
Temperature range: B Version: –40 C to +85 C.
Temperature range: Y Version: –40 C to +105 C.
See Terminology.
Guaranteed by design and characterization, not production tested.
Span = Maximum Output Frequency–Minimum Output Frequency.
The absolute voltage on the input pins must not go more positive than V
These logic levels apply to CLKOUT only when it is loaded with one CMOS load.
OTES
Integral Nonlinearity
Offset Error
Gain Error
Offset Error Drift
Gain Error Drift
Power Supply Rejection Ratio
Channel-to-Channel Isolation
Common-Mode Rejection
Input Current
Common-Mode Input Range
Differential Input Range
REFIN
REFOUT
Reference Drift
Line Rejection
Reference Noise
Output High Voltage, V
Output Low Voltage, V
Minimum Output Frequency
Maximum Output Frequency
ALL EXCEPT CLKIN
CLKIN ONLY
Input Frequency
V
I
I
Power-Up Time
DD
DD
DD
f
f
f
Nominal Input Voltage
Input Impedance
Output Voltage
Output Impedance
(0.1 Hz to 10 Hz)
Input High Voltage, V
Input Low Voltage, V
Input Current
Pin Capacitance
Input High Voltage, V
Input Low Voltage, V
Input Current
Pin Capacitance
CLKIN
CLKIN
CLKIN
(Normal Mode)
(Power-Down)
f
f
CLKIN
CLKIN
3
= 200 kHz
= 3 MHz
= 6.144 MHz
= 3 MHz
= 6.144 MHz
4
4
4
4
4
4
4
IN
4
4
1–V
OL
OH
IL
IL
IH
IH
IN
4)
4
4
6
Min
+0.2
+0.2
–60
+0.5
–V
0
70
35
2.38
4.0
2.4
3.5
4.75
REF
.
/Gain
B Version
Typ
+1.2
+1.2
–70
–75
–78
2.5
2.50
1
–70
100
0.05 f
0.45 f
6
6
6
25
30
12
12
2
4
50
50
CLKIN
CLKIN
1
Max
+2.2
+2.2
V
+V
+V
2.60
0.4
0.8
10
0.8
10
6.144
5.25
8
35
(V
T
0.0122
0.0122
0.0122
40
40
100
100
2
DD
MAX
REF
REF
DD
DD
– 1.75 +0.5
= +4.75 V to +5.25 V; V
unless otherwise noted.)
/Gain –V
/Gain 0
– 1.75 V or more negative than +0.5 V.
Min
+0.2
+0.2
–58
70
35
2.38
4.0
2.4
3.5
4.75
–3–
REF
/Gain
Y Version
Typ
+1.2
+1.2
–70
–75
–78
2.5
2.50
1
–70
100
0.05 f
0.45 f
6
6
6
25
30
12
12
2
4
50
50
CLKIN
CLKIN
REF
2
= +2.5 V; f
Max
+2.2
+2.2
V
+V
+V
2.60
0.4
0.8
0.8
5.25
8
10
10
6.144
35
0.015
0.015
0.015
40
40
100
100
2
DD
REF
REF
– 1.75
/Gain
/Gain
CLKIN
Units
% of Span
% of Span
% of Span
mV
mV
% of Span
% of Span
ppm of Span/ C
ppm of Span/ C
dB
dB
dB
nA
V
V
V
V
k
k
V
k
ppm/ C
dB
V
V
Hz
Hz
V
V
nA
pF
V
V
pF
MHz
V
mA
= 6.144 MHz; all specifications T
V/ C
V/ C
V p-p
A
A
s
5
AD7741/AD7742
Conditions/Comments
Unipolar Mode
Bipolar Mode
Unipolar Mode
Bipolar Mode
Unipolar Mode
Bipolar Mode
Unipolar Mode
Bipolar Mode
Bipolar Mode
Unipolar Mode
Output Sourcing 800 A
Output Sinking 1.6 mA
V
–V
V
and Bipolar)
For Specified Performance
Output Unloaded
Coming Out of Power-
Down Mode
V
IN
IN
REF
DD
= 0 V (Unipolar), V
= V
/Gain (Bipolar)
= 5%
REF
/Gain (Unipolar
MIN
7
IN
to
7
=