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AD9777

Features: 16-Bit Resolution, 160/400 MSPS Input/Output Data RateSelectable 2/4/8 Interpolating FilterProgrammable Channel Gain and Offset AdjustmentfS/4, fS/8 Digital Quadrature ModulationCapabilityDirect IF Transmission Mode for 70 MHz + IFsEnables Image Rejection ArchitectureFully Compatible SPI...

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SeekIC No. : 004273418 Detail

AD9777: Features: 16-Bit Resolution, 160/400 MSPS Input/Output Data RateSelectable 2/4/8 Interpolating FilterProgrammable Channel Gain and Offset AdjustmentfS/4, fS/8 Digital Quadrature ModulationCapability...

AD9777 Data Sheet

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Part Number:
AD9777
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/28

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Product Details

Description



Features:

16-Bit Resolution, 160/400 MSPS Input/Output Data Rate
Selectable 2/4/8 Interpolating Filter
Programmable Channel Gain and Offset Adjustment
fS/4, fS/8 Digital Quadrature Modulation
Capability
Direct IF Transmission Mode for 70 MHz + IFs
Enables Image Rejection Architecture
Fully Compatible SPI Port
Excellent AC Performance
SFDR 73 dBc @ 2 MHz35 MHz
WCDMA ACPR 71 dB @ IF = 71 MHz
Internal PLL Clock Multiplier
Selectable Internal Clock Divider
Versatile Clock Input
Differential/Single-Ended Sine Wave or
TTL/CMOS/LVPECL Compatible
Versatile Input Data Interface
Two's Complement/Straight Binary Data Coding
Dual-Port or Single-Port Interleaved Input Data
Single 3.3 V Supply Operation
Power Dissipation: Typical 1.2 W @ 3.3 V
On-Chip 1.2 V Reference
80-Lead Thermally Enhanced TQFP Package




Application

Analog Quadrature Modulation Architectures
3G, Multicarrier GSM, TDMA, CDMA Systems
Broadband Wireless, Point-to-Point Microwave Radios
Instrumentation/ATE




Pinout

AD9777 Diagram

Connection Diagram




Specifications

Resolution (Bits) 16bit
DAC Update Rate 400MSPS
DAC Settling Time 11ns
# DAC Outputs 2
DAC Type Current Out
DAC Input Format Par
Output FSR (Iout x Rload),Adj(Uni 2mA to Uni 20mA),User Def. Range/Offset
Ref Int/Ext Int/Ext
Supply Vnom Single(+3.3)
Pwr Diss 410mW
Package QFP


Parameter With Respectto Min Max Units
AVDD, DVDD, CLKVDD
AVDD, DVDD, CLKVDD
AGND, DGND, CLKGND
REFIO, REFLO, FSADJ1/2
IOUTA, IOUTB
P1B15P1B0, P2B15P2B0
DATACLK, PLL_LOCK
CLK+, CLK, RESET
LPF
SPI_CSB, SPI_CLK,
SPI_SDIO, SPI_SDO
Junction Temperature
Storage Temperature
Lead Temperature (10 sec)		 AGND, DGND, CLKGND
AVDD, DVDD, CLKVDD
AGND, DGND, CLKGND
AGND
AGND
DGND
DGND
CLKGND
CLKGND
DGND		 0.3
4.0
0.3
0.3
1.0
0.3
0.3
0.3
0.3
0.3
65		 +4.0
+4.0
+0.3
AVDD + 0.3
AVDD + 0.3
DVDD + 0.3
DVDD + 0.3
CLKVDD + 0.3
CLKVDD + 0.3
DVDD + 0.3
+125
+150
+300

V
V
V
V
V
V
V
V
V
V
V
V
V







Description

The AD9777 is the 16-bit member of the AD977x pin compatible,high performance, programmable 2*/4*/8* interpolating TxDAC+family. The AD977x family features a serial port interface (SPI)providing a high level of programmability, thus allowing for enhanced system level options. These options include: selectable 2*/4*/8* interpolation filters; fS/2, fS/4, or fS/8 digital quadrature modulation with image rejection; a direct IF mode; programmable channel gain and offset control; programmable internal clock divider; straight binary or two's complement data interface; and a single-port or dual-port data interface.

The selectable 2*/4*/8* interpolation filters simplify the require-ments of the reconstruction filters while simultaneously enhancing the TxDAC+ family's pass-band noise/distortion performance. The independent channel gain and offset adjust registers allow the user to calibrate LO feedthrough and sideband suppression






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