ADP3402 Analog Devices, ADP3402 Datasheet - Page 12

• Manufacturer Part Number: ADP3402
• Description: GSM Power Management System
• Manufacturer: Analog Devices

ADP3402
Printed Circuit Board Layout Considerations
Use the following general guidelines when designing printed
circuit boards:
1. Split the battery connection to the VBAT and SIMBAT pins
2. SIM input and output capacitors should be returned to the
and locate the input capacitors as close to the pins as possible.
SIMGND and kept as close as possible to the ADP3402 to
minimize noise. Traces to the SIM charge pump capacitor
should be kept as short as possible to minimize noise.
of the ADP3402. Use separate traces for each connection
0.0374 (0.95)
0.0335 (0.85)
0.006 (0.15)
0.002 (0.05)
PIN 1
28
1
0.0256
(0.65)
BSC
28-Lead Thin Shrink Small Outline (TSSOP)
0.386 (9.80)
0.378 (9.60)
0.0118 (0.30)
0.0075 (0.19)
Dimensions shown in inches and (mm).
OUTLINE DIMENSIONS
SEATING
PLANE
(RU-28A)
0.0433 (1.10)
14
15
–12–
MAX
0.244 (6.20)
0.236 (6.00)
0.0078 (0.200)
0.0035 (0.090)
3. VCCA and VTCXO capacitors should be returned to
4. VCC and VRTC capacitors should be returned to DGND.
5. Split the ground connections. Use separate traces or planes for
AGND.
the analog, digital, and power grounds, and tie them together
at a single point, preferably close to the battery return.
0.325 (8.25)
0.313 (7.95)
8
0
0.030 (0.75)
0.020 (0.50)
REV. 0