3 Description
The DAC38RFxx is a family of high-performance, dual/single-channel, 14-bit, 9-GSPS, RF-sampling digital-to-analog converters (DACs) that are capable of synthesizing wideband signals from 0 to 4.5 GHz. A high dynamic range allows the DAC38RFxx family to generate signals for a wide range of applications including 3G/4G signals for wireless base-stations and radar.
The devices feature a low-power JESD204B Interface with up to 8 lanes with a maximum bit rate of 12.5 Gbps allowing an input data rate of 1.25 GSPS complex per channel. The DAC38RFxx provides two digital up-converters per channel, with multiple options for interpolation rates. A digital quadrature modulator with independent, frequency flexible NCOs are available to support multi-band operation. An optional low-jitter PLL/VCO simplifies the DAC sampling clock generation by allowing use of a lower frequency reference clock.
Device Information(1)
PART NUMBER |
OUTPUT TYPE |
NUMBER OF CHANNELS |
DAC38RF83 |
Differential |
2 |
DAC38RF93 |
2 |
DAC38RF85 |
1 |
DAC38RF80 |
Single ended |
2 |
DAC38RF90 |
2 |
DAC38RF84 |
1 |
- For all available device options, see the Device Comparison Table.
4 Revision History
Changes from B Revision (April 2017) to C Revision
-
Changed the DescriptionGo
-
Changed the Device Information tableGo
-
Changed From: alarm_out_pol To: alm_out_pol in ALARM pin description in the Pin Functions - DAC38RF83, DAC38RF93, DAC38RF85 tableGo
-
Changed the Description of pins A3, A4, A7, A6, A9, A10, A12, E12, F11, F7, G6, H5, H7, J6, J11 in the Pin Functions - DAC38RF83, DAC38RF93, DAC38RF85 tableGo
-
Changed the description of TXENABLE pin in Pin Functions - DAC38RF83, DAC38RF93, DAC38RF85 tableGo
-
Changed From: alarm_out_pol To: alm_out_pol in ALARM pin description in the Pin Functions - DAC38RF80, DAC38RF90, DAC38RF84 tableGo
-
Changed the Description of pins A3, A4, A7, A6, A9, A10, A12, D8, E8, F11, F7, G6, H5, H7, J6, J11 in the Pin Functions - DAC38RF80, DAC38RF90, DAC38RF84 tableGo
-
Added description to TXENABLE pin in the Pin Functions - DAC38RF80, DAC38RF90, DAC38RF84 tableGo
-
Changed the MAX value of VEE18N rail in Absolute Maximum Ratings From: 0.5 V To: 0.3 VGo
-
Added "Supply Voltage Range" to the Recommended Operating Conditions tableGo
-
Changed DNL typical value From: ±0.5 To: ±3 LSB in the Electrical Characteristics - DC Specifications Go
-
Changed INL typical value From: ±1 To: ±4 LSB in the Electrical Characteristics - DC Specifications Go
-
Added "Reference voltage drift" to the Electrical Characteristics - DC Specifications tableGo
-
Changed the Isolation values in the TEST CONDITIONS, MIN,and MAX columns in the Electrical Characteristics - AC Specifications tableGo
-
Added Isolation vs Output Frequency plot for DAC38RF83/93/95 in Figure 39Go
-
Added Isolation vs Output Frequency plot for DAC38RF80/90/84 in Figure 40Go
-
Changed the MPY values in Table 4Go
-
Added MPY value for 16.5x to Table 4Go
-
Changed x To: √ in the JESD204B Formats for DAC38RFxx talbeGo
-
Changed JESD204B frame format for LMFSHd=84111 in Table 12Go
-
Changed JESD204B frame format for LMFSHd=44210 in Table 14Go
-
Changed JESD204B frame format for LMFSHd=24410 in Table 16Go
-
Changed JESD204B frame format for LMFSHd=44210 in Table 17Go
-
Changed JESD204B frame format for LMFSHd=88210 in Table 18Go
-
Changed JESD204B frame format for LMFSHd=24410 in Table 19Go
-
Changed JESD204B frame format for LMFSHd=48410 in Table 20Go
-
Changed JESD204B frame format for LMFSHd=24310 in Table 21Go
-
Changed JESD204B frame format for LMFSHd=48310 in Table 22Go
-
Changed Table 33Go
-
Changed register field programming values for LMFSHd=24410 and 24310 in Table 36Go
-
Changed the bit positions of N_M1 register field From: 12-8 To: 4-0 in Table 37 Go
-
Changed the bit positions of N_M1' N_M1’ (NPRIME_M1) register field From: 4-0 To: 12-8 in Table 37 Go
-
Deleted ISFIRCD_ENA and ISFIR_AB regsiter fields. Added ISFIR_ENA register field in Inverse Sinc FilterGo
-
Changed the description of DAC PLL alarm in Alarm MonitoringGo
-
Changed from BIST_ENA to Reserved in Table 56 Go
-
Changed from BIST_ZERO to Reserved in Table 56 Go
-
Changed the description of OUTSUM_SEL field in Table 64 Go
-
Changed From: "dummy data generation" To: "distortion enhancement" in Table 111 Go
-
Changed the junction temp and loop filter voltage range for PLL tuning in Figure 167 Go
Changes from A Revision (February 2017) to B Revision
-
Added VDDE1 rail to Supply Voltage Range in the Absolute Maximum Ratings tableGo
-
Changed subtitle From: LVDS OUTPUT: SYNC1+/-, SYNC2+/- To: LVDS OUTPUT: SYNC0+/-, SYNC1+/- in the Electrical Characteristics - Digital Specifications table Go
-
Added "0 dBFS" amplitude of input digital data in test conditions in the Electrical Characteristics - AC Specifications tableGo
-
Changed the NSD values for -9 dBFS in Electrical Characteristics - AC Specifications tableGo
-
Added the PLL/VCO Electrical Characteristics tableGo
-
Changed From: VCO frequency = 5898.24 MHz To: VCO frequency = 5.9 GHz in Figure 43 and Figure 44Go
-
Changed From: measured at 1 GHz To: measured at 1.8 GHz in Figure 41 and Figure 43Go
-
Added JESD204B clock phase register setting to Table 36 Go
-
Removed descriptions for CLKJESD_DIV register from Table 36 Go
-
Added JESD204B clock phase register setting to Table 37Go
-
Added information about the DAC output total current for various full scale current settings in DAC Fullscale Output Current Go
-
Changed the text in the second sentence of the DAC Transfer Function for DAC38RF80/90/84 section Go
-
Changed Bit 0 of Table 123 From: Enables the GSM PLL To: ReservedGo
-
Changed Table 125 Go
-
Changed description of SERDES_REFCLK_DIV register field in Table 126 Go
-
Changed Bit 12:11, 6:5 and 4:2 of Table 129 Go
-
Updated the startup sequence in Figure 167 Go
Changes from * Revision (December 2016) to A Revision
-
Changed Feature: Spectral Performance (on-chip PLL, DIFF)Go
-
Changed text From: 1.23 GSPS complex per channel To: 1.25 GSPS complex per channel in the DescriptionGo
-
Changed the Pin Configuration image Go
-
Changed the Pin Functions tableGo
-
Changed the Description of SYSREF+ From: "LVPECL SYSREF positive input." To: "LVPECL SYSREF positive input, self biased." in the Pin Functions - DAC38RF83, DAC38RF93, DAC38RF85 tableGo
-
Changed the Pin Configuration image Go
-
Changed the Pin Functions tableGo
-
Added "Transformer (TCM2-452X-2+) loss not de-embedded 2.1 GHz output frequency" to the Full scale output power Test Conditions in Electrical Characteristics - DC SpecificationsGo
-
Changed Reference output current From: 100 mA To: 100 nA in the Electrical Characteristics - DC SpecificationsGo
-
Changed the POWER SUPPLY CURRENT AND CONSUMPTION section of the Electrical Characteristics - DC specifications tableGo
-
Updated the typical values for power consumption for all modes in Electrical Characteristics - DC Specifications tableGo
-
Specified the test conditions for Electrical Characteristics - DC Specifications tableGo
-
Added max current and power consumption for operating Mode 1 and Mode 11 Electrical Characteristics - DC Specifications tableGo
-
Changed VI(DPP) From: MIN = 100 V TYP = 800 V To: TYP = 800 mV MAX = 2000 mVin Electrical Characteristics - Digital Specifications tableGo
-
Changed the typical values throughout the Electrical Characteristics - AC Specifications tableGo
-
Changed the NSD Test Conditions in the Electrical Characteristics - AC Specifications tableGo
-
Changed the AC PERFORMANCE – Modulated Signals section Test Conditions in the Electrical Characteristics - AC Specifications tableGo
-
Changed From: LMFSHd = 841 To: LMFSHd = 84111 in the Typical Characteristics conditions statementGo
-
Updated graphs in the Typical Characteristics sectionGo
-
Added: Transformer loss is not de-embedded in Figure 37 Go
-
Added: VCO frequency to Figure 41 through Figure 44 Go
-
Changed text From: 1.25 GSPS complex per channel To: 1.23 GSPS complex per channel in the DescriptionGo
-
Replaced the Functional Block Diagrams, Figure 45 through Figure 50Go
-
Updated the max input rate in Table 9 Go
-
Updated value of pull up and pull down resistors in Figure 70 under CMOS Digital InputsGo
-
Changed From: 2 x (DACFS -11) To: 2 mA x (DACFS - 11) in Equation 10 Go
-
Changed text From: "(PFD) and charge pump (CP) is required." To: "(PFD) is approximately 550 MHz." in the Internal PLL/VCO sectionGo
-
Updated the startup sequence in Figure 167 Go
-
Replaced Figure 172 Go