U2891B-AFS

更新时间： 2024-02-27 18:29:23

品牌	Logo	应用领域
TEMIC		/
页数	文件大小	规格书
6页	61K
描述
2.5 GHz Quadrature Up-Converter

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U2891B-AFS 数据手册

U2891B

TELEFUNKEN Semiconductors

2.5 GHz Quadrature Up-Converter

Description

The U2891B is a silicon monolithic IC made with TELE- ulator and mixer. The RF ports are single ended and the

FUNKEN’s advanced UHF process. The IC consists of a device can be operated adjustment free, but for optimiza-

500 MHz I/Q quadrature modulator and a 2.5 GHz mixer. tion also two pins for phase adjustment are provided.

Both parts can be connected via an external filter in order These features and the double conversion concept of

to suppress harmonics and spurious products. The device U2891B make this device perfectly suited for all digital

features 3 V operation, a low current consumption and radio applications from 900 MHz up to 2.5 GHz (e.g.,

furthermore two separate power-down functions for mod- GSM, DCS 1800, JDC, PHP and WLAN).

Features

Benefits

D Low power consumption: 25 mA / 3 V

D Extended talk time due to increased battery life

(typical at –8 dBm output level)

D Few external components results in cost and board

D 2.5 GHz output frequency

space saving

D Excellent sideband suppression by means of duty D Adjustment free, hence saves time and cost

cycle regeneration and 90° phase control

D One TX Platform for different systems

D Separate power-down mode for modulator and mixer

D Reduced costs and space for battery (3-V operation)

D Low LO input level: –10 dBm (typical)

D LO and RF port 50-W single-ended

Case: SSO-24 package

Ordering Information:

U2891B-AFS, U2891B-AFSG3 (see page 5)

Block Diagram

GND

14 13

8, 21, 20

Voltage

regulator

LO 1

Lo - Reg.

f / 2 f

0°

Control

90°

10,17

GND

94 8141 e

LP 1 LP 2

LO2

Rev. A2: 04.10.1995

1 (6)

Advanced Information

12 3 4 5 6

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与U2891B-AFS相关器件

型号	品牌	获取价格	描述	数据表
U2891B-AFSG3	TEMIC	获取价格	2.5 GHz Quadrature Up-Converter
U2891B-BFSG3	VISHAY	获取价格	Telecom IC, Bipolar, PDSO24,
U2891B-BFSG3	TEMIC	获取价格	Up Converter, 50MHz Min, 2500MHz Max, SSO-24
U2891B-FS	TEMIC	获取价格	Double Balanced Mixer, SS024, 24 PIN
U2891B-MFS	TEMIC	获取价格	暂无描述
U2891B-MFSG3	TEMIC	获取价格	Up Converter, 50MHz Min, 2500MHz Max, SSO-24
U2893B	TEMIC	获取价格	Modulation PLL for GSM, DCS and PCS Systems
U2893B-AFSG3	VISHAY	获取价格	Telecom IC, Bipolar, PDSO28,
U2893B-FS	TEMIC	获取价格	Phase Locked Loop, PDSO28, SSO-28
U2893B-MFS	TEMIC	获取价格	Telecom Circuit, 1-Func, Bipolar, PDSO28, SSO-28