AD9049BR Analog Devices, AD9049BR Datasheet - Page 4

• Manufacturer Part Number: AD9049BR
• Description: 9-Bit/ 30 MSPS ADC
• Manufacturer: Analog Devices

AD9049
Pin No
1, 7, 12, 21, 23
2, 8, 11
3
4
5
6
9
10
13
14
15
16–19
20, 22
24–26
27
28
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD9049 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
Analog Input
3.810
3.300
2.790
Name
GND
V
VREF
VREF
COMP
REF
AINB
AIN
ENCODE
NC
D8 (MSB)
D7–D4
V
D3–D1
D0 (LSB)
NC
Table I. AD9049 Digital Coding (Single Ended Input AIN, AINB Bypassed to GND)
D
DD
BP
OUT
IN
Function
Analog +5 V
Internal bandgap voltage reference (nominally +2.5 V).
Input to reference amplifier. Voltage reference for ADC is connected here.
Internal compensation pin, 0.1 F bypass connected here to V
External connection for (0.1 F) reference bypass capacitor.
Complementary analog input pin (Analog input bar).
Analog input pin.
Encode clock input to ADC. Internal T/H is placed in hold mode (ADC is encoding)
on rising edge of encode signal.
Not internally connected.
Most significant bit of ADC output.
Digital output bits of ADC.
Digital output power supply (only used by digital outputs).
Digital output bits of ADC.
Least significant bit of ADC output.
Not internally connected.
Ground.
Voltage Level
Positive Full Scale
Midscale
Negative Full Scale
VREF
ENCODE
VREF
REF
COMP
PIN DESCRIPTIONS
AINB
PIN CONNECTIONS
GND
GND
GND
OUT
AIN
NC
V
V
V
BP
5% power supply.
IN
D
D
D
10
11
12
13
14
1
2
3
4
5
6
7
NC = NO CONNECT
8
9
(Not to Scale)
TOP VIEW
AD9049
–4–
27
26
25
24
23
22
20
19
18
17
16
15
28
21
NC
D0 (LSB)
D1
D2
D3
GND
V
GND
V
D4
D5
D6
D7
D8 (MSB)
DD
DD
Digital Output
MSB . . . LSB Digital Output
111111111
011111111
000000000
WARNING!
D
(+5 V).
ESD SENSITIVE DEVICE
REV. A