All ac specifications tested by driving ENCODE and ENCODE differentially. Single-ended input: AMP-IN-X-1 = 1 V p-p, AMP-IN-X-2 = GND.
Gain tests are performed on AMP-IN-X-1 input voltage range.
3
Full Power Bandwidth is the frequency at which the spectral power of the fundamental frequency (as determined by FFT analysis) is reduced by 3 dB.
4
For differential input: +IN = 1 V p-p and –IN = 1 V p-p (signals are 180° out of phase). For single-ended input: +IN = 2 V p-p and = –IN = GND.
5
Minimum and maximum conversion rates allow for variation in Encode Duty Cycle of 50%
±
5%.
6
Analog Input signal power at –1 dBFS; signal-to-noise ratio (SNR) is the ratio of signal level to total noise (first five harmonics removed). Encode = 80 MSPS. SNR is reported
in dBFS, related back to converter full scale.
7
Analog Input signal power at –1 dBFS; signal-to-noise and distortion (SINAD) is the ratio of signal level to total noise + harmonics. Encode = 80 MSPS. SINAD is reported in dBFS,
related back to converter full scale.
8
Analog Input signal at –1 dBFS; SFDR is the ratio of converter full scale to worst spur.
9
Both input tones at –7 dBFS; two-tone intermodulation distortion (IMD) rejection is the ratio of either tone to the worst third order intermod product.
10
Channel-to-channel isolation tested with A channel grounded and a full-scale signal applied to B Channel.
11
Digital output logic levels: DV
CC
= 3.3 V, C
LOAD
= 10 pF. Capacitive loads >10 pF will degrade performance.
12
Supply voltage recommended operating range. AV
CC
may be varied from 4.85 V to 5.25 V. However, rated ac (harmonics) performance is valid only over the range AV
CC
= 5.0 V
to 5.25 V.
Specifications subject to change without notice.
REV. A
–3–
AD13280
ABSOLUTE MAXIMUM RATINGS
TEST LEVEL
ELECTRICAL
AV
CC
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 7 V
AV
EE
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V to 0 V
DV
CC
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 7 V
Analog Input Voltage . . . . . . . . . . . . . . . . . . . . . V
EE
to V
CC
Analog Input Current . . . . . . . . . . . . . . –10 mA to +10 mA
Digital Input Voltage (ENCODE) . . . . . . . . . . . . . 0 to V
CC
ENCODE,
ENCODE
Differential Voltage . . . . . . . . 4 V max
Digital Output Current . . . . . . . . . . . . . . –10 mA to +10 mA
ENVIRONMENTAL
2
Operating Temperature (Case) . . . . . . . . . –40°C to +85°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . 175°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 300°C
Storage Temperature Range (Ambient) . . –65°C to +150°C
NOTES
1
Absolute maximum ratings are limiting values applied individually, and beyond
which the serviceability of the circuit may be impaired. Functional operability is not
necessarily implied. Exposure to absolute maximum rating conditions for an
extended period of time may affect device reliability.
2
Typical thermal impedance for “ES” package:
JC
2.2°C/W;
JA
24.3°C/W.
1
I. 100% Production Tested
II. 100% Production Tested at 25°C, and sample tested at
specified temperatures. AC testing done on sample basis.
III. Sample Tested Only
IV. Parameter is guaranteed by design and characterization testing.
V. Parameter is a typical value only.
VI. 100% production tested with temperature at 25°C; sample
tested at temperature extremes.
ORDERING GUIDE
Model
AD13280AZ
AD13280AF
5962-0053001HXA
AD13280/PCB
Temperature Range (Case)
–25°C to +85°C
–25°C to +85°C
–40°C to +85°C
25°C
Package Description
68-Lead Ceramic Leaded Chip Carrier
68-Lead Ceramic Leaded Chip Carrier
with Nonconductive Tie-Bar
68-Lead Ceramic Leaded Chip Carrier
Evaluation Board with AD13280AZ
Package Option
ES-68C
ES-68C
ES-68C
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 AD13280 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.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. A
AD13280
PIN FUNCTION DESCRIPTIONS
Pin Number
1, 35
2, 3, 9, 10, 13, 16
4
5
6
7
8
11
12
14
15
17
18, 19, 37, 38
20–25, 28–33
26, 27
34
36
39–42, 45–52
43, 44
53
54, 57, 60, 61, 67, 68
55
56
58
59
62
63
64
65
66
Mnemonic
SHIELD
AGNDA
A–IN
A+IN
AMP-OUT-A
AMP-IN-A-1
AMP-IN-A-2
AV
EE
A
AV
CC
A
ENCODEA
ENCODEA
DV
CC
A
NC
D0A–D11A
DGNDA
DROUTA
DROUTB
D0B–D11B
DGNDB
DV
CC
B
AGNDB
ENCODEB
ENCODEB
AV
CC
B
AV
EE
B
AMP-IN-B-2
AMP-IN-B-1
AMP-OUT-B
B+IN
B–IN
Function
Internal Ground Shield between Channels
A Channel Analog Ground. A and B grounds should be connected as close to the device as possible.
Inverting Differential Input (Gain = 1)
Noninverting Differential Input (Gain = 1)
Single-Ended Amplifier Output (Gain = 2)
Analog Input for A Side ADC (Nominally
±
0.5 V)
Analog Input for A Side ADC (Nominally
±
1.0 V)
A Channel Analog Negative Supply Voltage (Nominally –5.0 V or –5.2 V)
A Channel Analog Positive Supply Voltage (Nominally 5.0 V)
Complement of Encode; Differential Input
Encode Input; Conversion Initiated on Rising Edge
A Channel Digital Positive Supply Voltage (Nominally 5.0 V/ 3.3 V)
No Connect
Digital Outputs for ADC A. D0 (LSB)
A Channel Digital Ground
Data Ready A Output
Data Ready B Output
Digital Outputs for ADC B. D0 (LSB)
B Channel Digital Ground
B Channel Digital Positive Supply Voltage (Nominally 5.0 V/ 3.3 V)
B Channel Analog Ground. A and B grounds should be connected as close to the device as possible.
Encode Input. Conversion initiated on rising edge.
Complement of Encode. Differential input.
B Channel Analog Positive Supply Voltage (Nominally 5.0 V)
B Channel Analog Negative Supply Voltage (Nominally –5.0 V or –5.2 V)
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