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參數資料
| 型號： | AD9764ARU |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 14-Bit, 125 MSPS TxDAC D/A Converter |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.035 us SETTLING TIME, 14-BIT DAC, PDSO28 |
| 封裝： | TSSOP-28 |
| 文件頁數： | 1/22頁 |
| 文件大?。?/td> | 307K |
| 代理商： | AD9764ARU |
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD9764*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1999
14-Bit, 125 MSPS
TxDAC
D/A Converter
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Member of Pin-Compatible TxDAC Product Family
125 MSPS Update Rate
14-Bit Resolution
Excellent SFDR and IMD
Differential Current Outputs: 2 mA to 20 mA
Power Dissipation: 190 mW @ 5 V to 45 mW @ 3 V
Power-Down Mode: 25 mW @ 5 V
On-Chip 1.20 V Reference
Single +5 V or +3 V Supply Operation
Packages: 28-Lead SOIC and TSSOP
Edge-Triggered Latches
APPLICATIONS
Communication Transmit Channel:
Basestations
ADSL/HFC Modems
Instrumentation
PRODUCT DESCRIPTION
The AD9764 is the 14-bit resolution member of the TxDAC
series of high performance, low power CMOS digital-to-analog
converters (DACs). The TxDAC
family, which consists of pin
compatible 8-, 10-, 12-, and 14-bit DACs, is specifically opti-
mized for the transmit signal path of communication systems.
All of the devices share the same interface options, small outline
package and pinout, providing an upward or downward compo-
nent selection path based on performance, resolution and cost.
The AD9764 offers exceptional ac and dc performance while
supporting update rates up to 125 MSPS.
The AD9764’s flexible single-supply operating range of 2.7 V to
5.5 V and low power dissipation are well suited for portable and
low power applications. Its power dissipation can be further
reduced to a mere 45 mW with a slight degradation in performance
by lowering the full-scale current output. Also, a power-down
mode reduces the standby power dissipation to approximately
25 mW.
The AD9764 is manufactured on an advanced CMOS process.
A segmented current source architecture is combined with a
proprietary switching technique to reduce spurious components
and enhance dynamic performance. Edge-triggered input
latches and a 1.2 V temperature compensated bandgap refer-
ence have been integrated to provide a complete monolithic
DAC solution. Flexible supply options support +3 V and +5 V
CMOS logic families.
The AD9764 is a current-output DAC with a nominal full-scale
output current of 20 mA and > 100 k
output impedance.
TxDAC is a registered trademark of Analog Devices, Inc.
*Patent pending.
Differential current outputs are provided to support single-
ended or differential applications. Matching between the two
current outputs ensures enhanced dynamic performance in a
differential output configuration. The current outputs may be
tied directly to an output resistor to provide two complemen-
tary, single-ended voltage outputs or fed directly into a trans-
former. The output voltage compliance range is 1.25 V.
The on-chip reference and control amplifier are configured for
maximum accuracy and flexibility. The AD9764 can be driven
by the on-chip reference or by a variety of external reference
voltages. The internal control amplifier, which provides a wide
(>10:1) adjustment span, allows the AD9764 full-scale current
to be adjusted over a 2 mA to 20 mA range while maintaining
excellent dynamic performance. Thus, the AD9764 may operate
at reduced power levels or be adjusted over a 20 dB range to
provide additional gain ranging capabilities.
The AD9764 is available in 28-lead SOIC and TSSOP packages.
It is specified for operation over the industrial temperature range.
PRODUCT HIGHLIGHTS
1. The AD9764 is a member of the TxDAC
product family that
provides an upward or downward component selection path
based on resolution (8 to 14 bits), performance and cost.
2. Manufactured on a CMOS process, the AD9764 uses a pro-
prietary switching technique that enhances dynamic perfor-
mance beyond that previously attainable by higher power/cost
bipolar or BiCMOS devices.
3. On-chip, edge-triggered input CMOS latches readily interface
to +3 V and +5 V CMOS logic families. The AD9764 can
support update rates up to 125 MSPS.
4. A flexible single-supply operating range of 2.7 V to 5.5 V, and
a wide full-scale current adjustment span of 2 mA to 20 mA,
allows the AD9764 to operate at reduced power levels.
5. The current output(s) of the AD9764 can be easily config-
ured for various single-ended or differential circuit topologies.
50pF
COMP1
+1.20V REF
AVDD
ACOM
REFLO
COMP2
CURRENT
SOURCE
ARRAY
0.1
m
F
+5V
SEGMENTED
SWITCHES
LSB
SWITCHES
REFIO
FS ADJ
DVDD
DCOM
CLOCK
+5V
R
SET
0.1
m
F
CLOCK
I
OUTA
I
OUTB
0.1
m
F
LATCHES
AD9764
SLEEP
DIGITAL DATA INPUTS (DB13–DB0)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9764ARURL | 功能描述:INTEGRATED CIRCUIT 制造商:analog devices inc. 系列:* 包裝:帶卷（TR） 零件狀態:最後搶購 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應商器件封裝:28-TSSOP 標準包裝:1 |
| AD9764ARURL7 | 功能描述:IC DAC 14BIT 125MSPS 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TxDAC® 標準包裝:47 系列:- 設置時間:2µs 位數:14 數據接口:并聯 轉換器數目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD9764ARUZ | 功能描述:IC DAC 14BIT 125MSPS 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TxDAC® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數:12 數據接口:串行 轉換器數目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數目和類型:2 電壓，單極 采樣率（每秒）:* 產品目錄頁面:1398 (CN2011-ZH PDF) |
| AD9764ARUZRL7 | 功能描述:IC DAC 14BIT 125MSPS 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TxDAC® 標準包裝:47 系列:- 設置時間:2µs 位數:14 數據接口:并聯 轉換器數目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD9764ARZ | 功能描述:IC DAC 14BIT 125MSPS 28-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TxDAC® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數:12 數據接口:串行 轉換器數目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數目和類型:2 電壓，單極 采樣率（每秒）:* 產品目錄頁面:1398 (CN2011-ZH PDF) |
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