This is the Iota chip, part of a GSM modem chipset.
For more information: https://osmocom.org/projects/baseband/wiki/TypicalCalypsoModemDesign
Thank you to blackbit for supplying the sample.
Package
TWL3025BZ @ X 82CV5TT
Die
2.2. 1 TWL3025 (Logo) (M) TI 2003
The die was covered with PI.
Top metal imaged with LMplan 50x LWD
- Single (28378×28402, 161.591MiB)
Top metal imaged with Carl Zeiss PlanApo 40x/1.0
- Single (45054×45341, 455.515MiB)
