U2730B

Features:

Supply voltage: 8.5 V
RF frequency range: 1400 MHz to 1550 MHz
IF frequency range: 150 MHz to 250 MHz
Overall IM3 rejection: > 40 dB
Overall gain control range: typ. 30 dB
DSB noise figure: 9.5 dB
Gain-controlled amplifier
Gain-controlled L-band mixer
On-chip gain-control circuitry
On-chip VCO, typical frequency 1261.568 MHz
Internal VCO can be overdriven by an external LO
On-chip frequency synthesizer
  Fixed LO divider factor: 2464
  Four reference divider factors selectable: 32, 35, 36, 48
  Tristate phase detector with programmable charge pump
  De-activation of tuning output programmable
  Lock-status indication
  Test interface


Pinout




Specifications

Parameters	Symbol	Value	Unit
Supply voltage     Pins 3, 9, 20 and 28	VCC	0.3 to +9.5	V
RF input voltage         Pins 25 and 26	VRF	750	mVpp
Voltage at Pin AGC     Pin 18	VAGC	0.5 to 6	V
Voltage at Pin TH       Pin 17	VTH	0.3 to +4.0	V
Input voltage at Pin TANK (internal oscillator overdriven) Pin 5	VTANK	1	Vpp
Current at IF output  Pin 19	IIF	4.0	mA
Reference input voltage (diff.) Pins 15 and 16	REF, NREF	1	Vpp
Control input voltage  Pins 1, 2 and 27	C, S	0.3 to +9.5	V
PLCK output current   Pin 14	IPLCK	0.5	mA
PLCK output voltage  Pin 14	VPLCK	0.3 to +5.5	V
Junction temperature	Tj	125	°C
Storage temperature	Tstg	40 to +125	°C

Description

The U2730B is a monolithic integrated L-band downconverter circuit fabricated in TEMIC Semiconductors' advanced UHF5S technology. U2730B covers all functions of an L-band down-converter in a DAB receiver. The U2730B includes a gain-controlled amplifier, a gain-controlled mixer, an output buffer, a gain-control block, an L-band oscillator and a complete frequency syntheziser unit. The frequency syntheziser block consists of an input buffer for the reference frequency signal, a reference divider, an LO divider, a tri-state phase detector, a loop filter amplifier, a lock detector, a programmable charge pump, a test interface and a control interface.

Electrostatic sensitive U2730B. Observe precautions for handling.