AD9054 Datasheet, PDF (4/20 Pages) Analog Devices – 8-Bit, 200 MSPS A/D Converter

AD9054
ABSOLUTE MAXIMUM RATINGS*
V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6 V
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . V_DD to 0.0 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . V_DD to 0.0 V
VREF IN, VREF OUT . . . . . . . . . . . . . . . . . . . V_DD to 0.0 V
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature . . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . +175°C
Maximum Case Temperature . . . . . . . . . . . . . . . . . . +150°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions outside of those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods may affect device reliability.
Step
255
254
253
•
•
•
129
128
127
126
•
•
•
2
1
0
Table I. Output Coding
AIN–AIN
≥0.512 V
0.508 V
0.504 V
•
•
•
0.006 V
0.002 V
–0.002 V
–0.006 V
•
•
•
–0.504 V
–0.508 V
≤–0.512 V
Code
255
254
253
•
•
•
129
128
127
126
•
•
•
2
1
0
Binary
1111 1111
1111 1110
1111 1101
•
•
•
1000 0001
1000 0000
0111 1111
0111 1110
•
•
•
0000 0010
0000 0001
0000 0000
ORDERING GUIDE
Model
Temperature
Range
AD9054BST-200
AD9054BST-135
AD9054/PCB
–40°C to +85°C
–40°C to +85°C
+25°C
*ST = Plastic Thin Quad Flatpack (TQFP).
Package
Option*
ST-44
ST-44
Evaluation Board
PIN FUNCTION DESCRIPTIONS
Pin Number Name
Function
1
2
3, 5, 15, 18, 28,
30, 31, 36, 41
4, 6, 16, 17, 27,
29, 32, 35, 37, 40
14–7
19–26
33
34
38
39
42
43
44
ENCODE
ENCODE
VDD
GND
DA₀–DA₇
DB₀–DB₇
VREF OUT
VREF IN
AIN
AIN
DEMUX
DS
DS
Encode Clock for ADC (ADC
Samples on Rising Edge of
ENCODE).
Encode Clock Complement
(ADC Samples on Falling Edge
of ENCODE).
Power Supply (+5 V).
Ground.
Digital Outputs of ADC Channel
A. DA₇ is the MSB, DA₀ the LSB.
Digital Outputs of ADC Channel
B. DB₇ is the MSB, DB₀ the LSB.
Internal Reference Output
(+2.5 V typical); Bypass with
0.1 µF to Ground.
Reference Input for ADC (+2.5 V
typical, ± 4%).
Analog Input—Complement.
Connect to input signal midscale
reference.
Analog Input—True.
Format Select. LOW = Dual.
Channel Mode, HIGH = Single.
Channel Mode (Channel A Only).
Data Sync Complement.
Data Sync—Aligns output chan-
nels in Dual-Channel Mode.
PIN CONFIGURATION
VREF IN
GND
VDD
GND
AIN
AIN
GND
VDD
DEMUX
DS
DS
AD9054
TOP VIEW
(PINS DOWN)
PIN 1
IDENTIFIER
DB₃
DB₂
DB₁
DB₀ (LSB)
VDD
GND
GND
VDD
DA₀ (LSB)
DA₁
DA₂
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 AD9054 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.
–4–
WARNING!
ESD SENSITIVE DEVICE
REV. 0