參數(shù)資料
型號(hào): 5962-0724701VXA
廠商: TEXAS INSTRUMENTS INC
元件分類: DAC
英文描述: PARALLEL, WORD INPUT LOADING, 0.0035 us SETTLING TIME, 14-BIT DAC, CBGA192
封裝: CERAMIC, BGA-192
文件頁(yè)數(shù): 9/30頁(yè)
文件大?。?/td> 970K
代理商: 5962-0724701VXA
www.ti.com
SGLS386A – JANUARY 2009 – REVISED DECEMBER 2009
APPLICATION INFORMATION
Detailed Description
Figure 10 shows a simplified block diagram of the current steering DAC5670. The DAC5670 consists of a
segmented array of NPN-transistor current sinks, capable of delivering a full-scale output current up to 30mA.
Differential current switches direct the current of each current sink to either one of the complementary output
nodes IOUT_P or IOUT_N. The complementary current output enables differential operation, canceling out
common-mode noise sources (digital feed-through, on-chip and PCB noise), dc offsets, and even-order distortion
components, and doubling signal output power.
The full-scale output current is set using an external resistor (RBIAS) in combination with an on-chip bandgap
voltage reference source (1.2V) and control amplifier. The current (IBIAS) through resistor RBIAS is mirrored
internally to provide a full-scale output current equal to 32 times IBIAS. The full-scale current is adjustable from
30mA down to 5mA by using the appropriate bias resistor value.
Figure 10. Current Steering DAC5670
Copyright 2009, Texas Instruments Incorporated
17
Product Folder Link(s): DAC5670-SP
相關(guān)PDF資料
PDF描述
5962-0724701VXA PARALLEL, WORD INPUT LOADING, 0.0035 us SETTLING TIME, 14-BIT DAC, CBGA192
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