AD640 Analog Devices, AD640 Datasheet - Page 4

• Manufacturer Part Number: AD640
• Description: DC-Coupled Demodulating 120 MHz Logarithmic Amplifier
• Manufacturer: Analog Devices

AD640
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 AD640 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.
(continued from page 1)
6. The low input offset voltage of 50 V (200 V max) ensures
7. Thermal recovery “tails,” which can obscure the response
8. The noise spectral density of 2 nV/ Hz results in a noise floor of
good accuracy for low level dc inputs.
when a small signal immediately follows a high level input,
have been minimized by special attention to design details.
~23 V rms (–80 dBm) at a bandwidth of 100 MHz. The dy-
namic range using cascaded AD640s can be extended to 95 dB
by the inclusion of a simple filter between the two devices.
20-Lead Ceramic DIP (D) Package
20-Lead Plastic DIP (N) Package
SIG –OUT
ATN COM
ATN COM
ATN LO
SIG –IN
ATN IN
BL1
BL2
–V
ITC
Dimensions shown in inches and (mm).
S
CHIP DIMENSIONS AND
10
1
2
3
4
5
6
7
8
9
BONDING DIAGRAM
(Not to Scale)
TOP VIEW
AD640
19
18
17
16
15
14
13
12
11
20
SIG +IN
ATN OUT
CKT COM
RG1
RG0
RG2
LOG OUT
LOG COM
+V
SIG +OUT
S
ATN COM
ATN IN
20-Lead PLCC (P) Package
BL1
–V
ITC
CONNECTION DIAGRAMS
S
4
5
6
7
8
9
3
(Not to Scale)
TOP VIEW
10
2
AD640
11
1
PIN 1
IDENTIFIER
–4–
20
12
19
13
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 V
Input Voltage (Pin 1 or Pin 20 to COM) . . . . –3 V to +300 mV
Attenuator Input Voltage (Pin 5 to Pin 3/4) . . . . . . . . . . .
Storage Temperature Range D, E . . . . . . . . . –65 C to +150 C
Storage Temperature Range N, P . . . . . . . . . –65 C to +125 C
Ambient Temperature Range, Rated Performance
Lead Temperature Range (Soldering 60 sec) . . . . . . . . +300 C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
Model
AD640JN
AD640JP
AD640BD
AD640BE
AD640BP
AD640TD/883B
5962-9095501MRA –55 C to +125 C 20-Lead Ceramic DIP
AD640TE/883B
5962-9095501M2A –55 C to +125 C 20-Terminal Ceramic
AD640TCHIPS
AD640EB
AD640JP-REEL
AD640JP-REEL7
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Industrial, AD640B . . . . . . . . . . . . . . . . . . . –40 C to +85 C
Military, AD640T . . . . . . . . . . . . . . . . . . . –55 C to +125 C
Commercial, AD640J . . . . . . . . . . . . . . . . . . . 0 C to +70 C
18
17
16
15
14
CKT COM
RG1
RG0
RG2
LOG OUT
ATN COM
ATN IN
Temperature
Range
0 C to +70 C
0 C to +70 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–55 C to +125 C 20-Lead Ceramic DIP
–55 C to +125 C 20-Terminal Ceramic
–55 C to +125 C Die
0 C to +70 C
0 C to +70 C
20-Terminal Ceramic LCC (E) Package
BL1
–V
ITC
ORDERING GUIDE
S
4
5
6
7
8
9 10 11 12 13
3
(Not to Scale)
TOP VIEW
2
AD640
1
Package
Description
20-Lead Plastic DIP
20-Lead PLCC
20-Lead Ceramic DIP
20-Terminal Ceramic
LCC
20-Lead PLCC
LCC
LCC
Evaluation Board
13" Tape and Reel
7" Tape and Reel
WARNING!
20 19
18
17
16
15
14
CKT COM
RG1
RG0
RG2
LOG OUT
ESD SENSITIVE DEVICE
Package
Option
N-20
D-20
E-20A
D-20
D-20
E-20A
E-20A
REV. C
P-20A
P-20A
P-20A
P-20A
4 V