ad7740 Analog Devices, Inc., ad7740 Datasheet - Page 6

• Manufacturer Part Number: ad7740
• Description: 3 V/5 V Low Power, Synchronous Voltage-to-frequency Converter
• Manufacturer: Analog Devices, Inc.

AD7740–Typical Performance Characteristics
–0.005
–0.015
0.015
0.005
2.520
2.515
2.510
2.505
2.500
–0.01
0.01
12
–4
–8
8
4
0
0
–0.5
2.5
0
T
REFIN = 2.5V
CLKIN = 1MHz
T
BUF = 0
A
A
= 25 C
= 25 C
3.0
BUFFER OFF
0
3
0.5
3.5
GAIN ERROR
VDD – V
VDD – V
VIN – V
1
4.0
4
BUFFER ON
OFFSET ERROR
1.5
VDD = 5V
REFIN = 2.5V
CLKIN = 1MHz
T
GAIN ERROR
4.5
A
= 25 C
5
2
5.0
2.5
5.5
6
0.08
0.04
0
–0.04
–0.08
–0.12
CLKIN
FOUT
–80
–50
–60
–70
–4
–5
–6
–7
–8
1
2
–1
0
CH1
V
REFIN = 2.5V
T
VDD = 5V
REFIN = 4.75V
CLKIN = 1MHz
T
DD
A
A
2.00V CH2 2.00V M 2.00 s
= 25 C
= 25 C
0
= 5V
200
CLKIN FREQUENCY – kHz
BUFFER OFF
BUFFER ON
BUFFER ON
1
400
VIN – V
2
600
BUFFER OFF
3
800
4
1000
5
VDD = 5V
REFIN = 5V
T
CLKIN
A
= 25 C
1 MHz
–0.05
0.05
–0.1
1.25
0.75
0.25
0.1
0.5
0
1
0
0
0
BUFFER
OFF
BUFFER ON
BUFFER OFF
200
200
CLKIN FREQUENCY – kHz
CLKIN FREQUENCY – kHz
400
400
BUFFER ON
600
600
V
REFIN = 2.5V
T
VDD = 5V
REFIN = 5V
T
C
C
A
DD
A
FOUT
CLKOUT
= 25 C
= 25 C
= 5V
800
= 43pF
800
= 22pF
1000
1000