AD53508
–4–
REV. A
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 AD53508 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
PIN FUNCTION DESCRIPTIONS
Pin Name Description
1 DSR_2.5 2.5 V Reference Input
2 DAC2_A First of Two Switchable Inputs
3 DAC1_A Second of Two Switchable Inputs
4 EXT_RC_A External R
S
and C Common
5 C1_A External Capacitor
6 R1_A External Resistor
7 R2_A External Resistor
8 SENSE_A Sense Input
9 FORCE_A Force Output
10 GUARD_A Guard Drive Output
11 MEAS_OUT_A Measurement Output
12 VCC +15 V Analog Supply
13 M_CON_A* Connect Measure Output to Bus
14 VEE –10 V Analog Supply
15 FORCE_I_A* Force V (When Hi) or I (When Lo)
16 FORCE_EN_A* Control Input
17 DAC1_SEL_A* Select DAC1 (When Lo) or DAC2
18 INTEG_A* Control Input
19 HOLD_A* Control Input
20 I_RANGE0_A* Select 2 mA Range (Active Lo)
21 I_RANGE1_A* Select 200 µA Range (Active Lo)
22 VERIFY* Measure Forced Voltage or Current
23 OUTPUT_CON_A* Connect Pin Drive (Active Lo)
24 OUTPUT_CON_B* Connect Pin Drive (Active Lo)
25 I_RANGE1_B* Select 200 µA Range (Active Lo)
26 I_RANGE0_B* Select 2 mA Range (Active Lo)
27 HOLD_B* Control Input
28 INTEG_B* Control Input
29 DAC1_SEL_B* Select DAC1 (When Lo) or DAC2
30 FORCE_EN_B* Control Input
31 FORCE_I_B* Force V (When Hi) or I (When Lo)
32 DIGGND Digital Ground
33 M_CON_B* Connect Measure Output to Bus
34 VDD +5 V Digital Supply
35 MEAS_OUT_B Measurement Output
36 GUARD_B Guard Drive Output
37 FORCE_B Force Output
38 SENSE_B Sense Input
39 R2_B External Resistor
40 R1_B External Resistor
41 C1_B External Capacitor
42 EXT_RC_B External R
S
and C Common
43 DAC1_B Second of Two Switchable Inputs
44 DAC2_B First of Two Switchable Inputs
*
= Active Lo
ABSOLUTE MAXIMUM RATINGS*
(T
A
= 25°C unless otherwise noted)
Min Max Unit Condition
VDD to VEE –0.3 +26.4 V
VCC to VEE –0.3 +26.4 V
VDD to DGND –0.3 +6 V
Digital Inputs to DGND –0.3 VCC+0.3 V
Power Dissipation 700 mW T
A
≤ 75°C
Operating Temperature
Range 25 70 °C
Storage Temperature –60 +125 °C
Lead Temperature 300 °C Soldering (10 sec)
Force/Sense Outputs VEE–0.8 VCC+0.8 V Or 75 mA,
Whichever Is Less
*
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. These are stress ratings only; functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ORDERING GUIDE
Temperature Package Package
Model Range Description Option
AD53508JP 25°C to 70°C Plastic Leaded P-44A
Chip Carrier
PIN CONFIGURATION
6 5 4 3 2 1 44 43 42 41 40
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
39
38
37
36
35
34
33
32
31
30
29
7
8
9
10
11
12
13
14
15
16
17
18 19 20 21 22 23 24 25 26 27 28
* = ACTIVE LO
R2
B
SENSE
B
FORCE
B
GUARD
B
MEAS
OUT B
VDD
M
CON B*
DIGGND
FORCE
I B*
FORCE EN B*
DAC1
SEL B*
R2
A
SENSE
A
FORCE
A
GUARD
A
MEAS
OUT A
VCC
M
CON A*
VEE
FORCE
I A*
FORCE
EN A*
DAC1
SEL A*
R1 A
C1
A
EXT RC A
DAC1
A
DAC2
A
DSR 2.5
DAC2
B
INTEG A*
HOLD
A*
I
RANGE0 A*
I
RANGE1 A*
OUTPUT
CON A*
OUTPUT
CON B*
I
RANGE1 B*
I
RANGE0 B*
HOLD B*
INTEG
B*
VERIFY*
DAC1
B
EXT
RC B
C1 B
R1
B
AD53508
