AD53508JP Analog Devices Inc, AD53508JP Datasheet - Page 6

• Manufacturer Part Number: AD53508JP
• Description: IC,ATE Circuit,LDCC,44PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of AD53508JP

• Rohs Status: RoHS non-compliant
• Applications: Testing Equipment
• Interface: Analog
• Voltage - Supply: 14 V ~ 15.75 V
• Package / Case: 44-PLCC
• Mounting Type: Surface Mount

AD53508
PPMU APPLICATION NOTES
The PPMU can be used in two modes: 1. VOLTAGE FORCE
with CURRENT MEASURE or VERIFY CURRENT FORCE;
2. CURRENT FORCE with VOLTAGE MEASURE or
VERIFY VOLTAGE FORCE. In both modes the following
setup is recommended:
1. The value of the external integrate capacitor (EXT_RC to
2. MEAS_OUT pin is loaded with 1 MΩ to ground.
3. V
4. A 10 Ω resistor in series with the FORCE pin.
5. A 1 kΩ resistor in series with the SENSE pin.
IN VOLTAGE FORCE WITH CURRENT MEASURE OR
VERIFY CURRENT FORCE
To measure the leakage in the current measure and hold mode,
the PPMU has to be into the Force Voltage/Measure Current
Integrate mode.
1. The FORCE_A (Force Output) pin has to be programmed
2. The PPMU has to be programmed to INTEGRATE mode.
3. The PPMU has to be programmed to HOLD mode.
4. Sample MEAS_OUT.
5. Wait 100 ms.
6. Sample MEAS_OUT again.
7. The difference between 2 and 4 must be less than 15 mV.
The linearity tests for forcing voltage are as follows (at the
FORCE pin):
1. The four ranges of CURRENT MEASURE ranges (200 nA,
2. The endpoints of the linearity curve are determined by –full
3. Using these endpoints, gain nonlinearity is computed and
C1) is 10 nF.
V
to 9 V.
20 µA, 200 µA, and 2 mA) correspond to F1, F2, F3, and F4.
scale (or LOW), and the +full scale (or HIGH) readings at
the same FORCE pin current.
tested at the 1/4 scale, 1/2 scale, and 3/4 scale points.
CC
EE
MEAS OUT
VOLTAGE
= –10 V, DSR = 2.5 V unless otherwise stated.
FORCING
= 15.0 V, V
DAC1
DAC2
DSR
CON
2.5V
S1
DD
S6
S7
ENABLE
OUTPUT
= 4.5 V, DIGGND = 0.0 V,
AD53508
S2
S3
VM
IM
SENSE
IF
VF
S4
S5
DIFF
1.25R
1.25R
MAIN
EXT RC
R
R
INTEGRATE
200 A
10k
4. Computations for F1 are:
The linearity tests for measuring current are as follows (at the
MEAS_OUT pin):
1. The voltage is constant for these measurements.
2. The four ranges (M1, M2, M3, M4) correspond to
3. The endpoints of the linearity curve are determined by the
4. Using these endpoints, gain nonlinearity is computed and
5. Computations for M1 are:
The M_CON pin can be used for disconnecting the MEAS_OUT
pin by:
1. Raising M_CON to 2.4 V.
2. Measuring MEAS_OUT (which is loaded with 100 kΩ).
3. MEAS_OUT should ideally be 0 V.
The OUTPUT_CON pin can be used for disconnecting the
DUT by:
1. Disabling the SENSE pin (OUTPUT_CON = 2.4 V).
2. Loading FORCE_OUT with 2 kΩ to ground.
3. Programming the DAC1 input to +FS (+9 V) and measuring
4. Programming the DAC1 input to –FS (–4 V) and measur-
5. FV1–FV2 < 1.3 mV.
6. A change of 1.3 mV implies a switch off-resistance of 20 MΩ.
40pF
S10
F1 × 0.25 = LOW + 1 × (HIGH – LOW)/4
F1 × 0.50 = LOW + 2 × (HIGH – LOW)/4
F1 × 0.75 = LOW + 3 × (HIGH – LOW)/4
Where LOW = –Full Scale and HIGH = +Full Scale.
CURRENT MEASURE ranges (200 nA, 20 µA, 200 µA,
and 2 mA respectively).
–full scale (or LOW), and the +full scale (or HIGH) read-
ings at the same FORCE pin voltage.
tested at the 1/4 scale, 1/2 scale, and 3/4 scale points.
M1 × 0.25 = LOW + 1 × (HIGH – LOW)/4
M1 × 0.50 = LOW + 2 × (HIGH – LOW)/4
M1 × 0.75 = LOW + 3 × (HIGH – LOW)/4
Where LOW = –Full Scale, and HIGH = +Full Scale.
the FORCE_OUT voltage (FV1).
ing the FORCE_OUT voltage (FV2).
2mA
1k
UNITY
C1
R1
R2
S8
S9
INT/IM
GUARD
S11
S12
S13
S14
S15
S16
S18
≤
S17
FORCE
GUARD
SENSE
1k
10
TO DUT