adc1112d125 NXP Semiconductors, adc1112d125 Datasheet

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adc1112d125

Manufacturer Part Number
adc1112d125
Description
Adc1112d125 Dual 11-bit Adc; Cmos Or Lvds Ddr Digital Outputs
Manufacturer
NXP Semiconductors
Datasheet

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1. General description
2. Features and benefits
3. Applications
The ADC1112D125 is a dual channel 11-bit Analog-to-Digital Converter (ADC) optimized
for high dynamic performance and low power consumption. Pipelined architecture and
output error correction ensure the ADC1112D125 is accurate enough to guarantee zero
missing codes over the entire operating range. Supplied from a single 3 V source, it can
handle output logic levels from 1.8 V to 3.3 V in Complementary Metal Oxide
Semiconductor (CMOS) mode, because of a separate digital output supply. It supports the
Low Voltage Differential Signalling (LVDS) Double Data Rate (DDR) output standard. An
integrated Serial Peripheral Interface (SPI) allows the user to easily configure the ADC.
The device also includes a programmable full-scale SPI to allow a flexible input voltage
range of 1 V (p-p) to 2 V (p-p). With excellent dynamic performance from the baseband to
input frequencies of 170 MHz or more, the ADC1112D125 is ideal for use in
communications, imaging and medical applications.
ADC1112D125
Dual 11-bit ADC; CMOS or LVDS DDR digital outputs
Rev. 2 — 3 March 2011
SNR, 66.2 dBFS
SFDR, 87 dBc
Sample rate up to 125 Msps
Clock input divided by 2 to reduce jitter
contribution
Single 3 V supply
Flexible input voltage range: 1 V (p-p)
to 2 V (p-p)
CMOS or LVDS DDR digital outputs
Power-down and Sleep modes
Wireless and wired broadband
communications
Spectral analysis
Ultrasound equipment
Input bandwidth, 600 MHz
Power dissipation, 1230 mW
Serial Peripheral Interface (SPI)
Duty cycle stabilizer
Fast OuT-of-Range (OTR) detection
Pin and software compatible with
ADC1412D series and ADC1212D
series.
Offset binary, two’s complement, gray
code
HVQFN64 package
Portable instrumentation
Imaging systems
Software defined radio
Product data sheet

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adc1112d125 Summary of contents

Page 1

... Serial Peripheral Interface (SPI) allows the user to easily configure the ADC. The device also includes a programmable full-scale SPI to allow a flexible input voltage range (p- (p-p). With excellent dynamic performance from the baseband to input frequencies of 170 MHz or more, the ADC1112D125 is ideal for use in communications, imaging and medical applications. 2. Features and benefits SNR, 66 ...

Page 2

... INBP T/H ADC B CORE INPUT 11-BIT STAGE PIPELINED INBM ERROR CORRECTION AND DIGITAL PROCESSING All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 SDIO/ODS SCLK/DFS CS SPI INTERFACE OTRA CMOS: DA10 to DA0 OUTPUT or DRIVERS LVDS/DDR: DA9_DA10_P to LOW_DA0_P DA9_DA10_M to LOW_DA0_M ...

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... I clock input 9 I complementary clock input 10 G analog ground 11 O bottom reference; channel top reference; channel B All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 HVQFN64 005aaa162 © ...

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... O data output bit 5; channel data output bit 6; channel data output bit 7; channel data output bit 8; channel A All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 …continued © NXP B.V. 2011. All rights reserved ...

Page 5

... AGND 11 REFBB REFBT 12 VCMB 13 AGND 14 15 INBM 16 INBP Transparent top view Pin configuration with LVDS DDR digital outputs selected All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 …continued HVQFN64 ...

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... DA7 and DA8 multiplexed, complement 57 O differential output data DA9 and DA10 multiplexed, true 58 O differential output data DA9 and DA10 multiplexed, complement Table 2). All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 [1] © NXP B.V. 2011. All rights reserved ...

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... CMOS mode; f clk MHz i LVDS DDR mode 125 Msps; f clk i ADC1112D125; analog supply only Power-down mode Sleep mode All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Min −0.4 −0.4 −0.4 −55 −40 - Conditions [1] [1] Min Typ 2.85 3.0 1.65 1 ...

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... LOW-medium level medium-HIGH level high impedance; see = 100 Ω L output buffer current set to 3.5 mA output buffer current set to 3 INAP INAM All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Min Typ ±1.6 - ±0.8 ±3 0.7V - DDA - ...

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... 1 DDO amb − 1 DDA DDO INAP INAM All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Min Typ - 600 0.5V DDA - ...

Page 10

... 1 DDO amb − 1 DDA DDO INAP INAM All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Min Typ Max - ...

Page 11

... 1 DDO amb − 1 DDA DDO INAP INAM . DDO All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Min Typ Max 100 - 125 - ...

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... DAVP DAVM t clk clk clk LVDS DDR mode timing All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 − 13) (N − 12) (N − 11 clk − 13) (N − 12) (N − 11 ...

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... V amb w(SCLK) h SCLK SDIO W1 W0 R/W SPI timing All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Conditions Min Typ - data to SCLK HIGH - SCLK HIGH - 5 data to SCLK HIGH - 2 ...

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... Fig 8. 001aam616 (dBFS δ (%) = 125 Msps s Fig 10. SNR as a function of duty cycle (δ) All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 16 R (kΩ 150 250 350 Resistance as a function of frequency 80 ...

Page 15

... V (V) I(cm) Fig 14. SNR as a function of common-mode input All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 (1) (2) ( −40 °C/typical supply voltages amb = +25 °C/typical supply voltages amb = +90 °C/typical supply voltages amb 0 0 ...

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... NXP Semiconductors 11. Application information 11.1 Device control The ADC1112D125 can be controlled via the Serial Peripheral Interface (SPI control mode) or directly via the I/O pins (Pin control mode). 11.1.1 SPI and Pin control modes The device enters Pin control mode at power-up and remains in this mode as long as pin CS is held HIGH ...

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... HIGH, two’s complement is selected. 11.2 Analog inputs 11.2.1 Input stage The analog input of the ADC1112D125 supports a differential or a single-ended input drive. Optimal performance is achieved using differential inputs with the common-mode input voltage (V The full-scale analog input voltage range is configurable between 1 V (p-p) and 2 V (p-p) ...

Page 18

... Figure 18 would be suitable for a baseband application. ADT1-1WT 100 nF Analog input 100 nF Figure 19 is recommended for high frequency applications. In All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 INAP/ R INBP C INAM/ R INBM 001aan679 R (Ω 100 nF 25 Ω ...

Page 19

... System reference and power management 11.3.1 Internal/external references The ADC1112D125 has a stable and accurate built-in internal reference voltage to adjust the ADC full-scale. This reference voltage can be set internally via SPI or with pins VREF and SENSE (programmable steps between 0 dB and −6 dB via control bits INTREF[2:0] when bit INTREF_EN = logic 1 ...

Page 20

... VREF connected to pin SENSE and 24) via 330 pF capacitor to AGND to Figure 24 illustrate how to connect the SENSE and VREF pins to select the All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 BANDGAP REFERENCE EXT_ref ADC CORE VREF pin 330 pF capacitor to AGND ...

Page 21

... Fig 24. Internal reference via SPI (p- (p-p) Programmable full-scale Level (dB) 0 −1 −2 −3 −4 −5 −6 reserved All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 VREF 330 pF REFERENCE EQUIVALENT SCHEMATIC SENSE VREF 330 pF REFERENCE EQUIVALENT SCHEMATIC ...

Page 22

... V (see 11.4 Clock input 11.4.1 Drive modes The ADC1112D125 can be driven differentially (LVPECL). It can also be driven by a single-ended LVCMOS signal connected to pin CLKP (pin CLKM should be connected to ground via a capacitor) or pin CLKM (pin CLKP should be connected to ground via a capacitor). ...

Page 23

... Package ESD Parasitics CLKP CLKM V = common-mode voltage of the differential input stage. cm(clk) All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Sine clock input 005aaa054 b. Sine clock input (with transformer) CLKP CLKM 005aaa172 Figure 28. The common-mode V ...

Page 24

... Clock input divider The ADC1112D125 contains an input clock divider that divides the incoming clock by a factor of 2 (when bit CLKDIV = logic 1; see deliver a higher clock frequency with better jitter performance, leading to a better SNR result once acquisition has been performed ...

Page 25

... DAn_DAn + 1_P; DBn_DBn + 1_P 100 Ω DAn_DAn + 1_M; DBn_DBn + 1_M + - AGND All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 Table RECEIVER 100 Ω 005aaa112 RECEIVER 100 Ω 005aaa113 Table 32) in order to adjust the output logic © ...

Page 26

... Digital offset By default, the ADC1112D125 delivers output code that corresponds to the analog input. However possible to add a digital offset to the output code via the SPI (bits DIG_OFFSET[5:0]; see ADC1112D125 Product data sheet Dual 11-bit ADC: CMOS or LVDS DDR digital outputs ...

Page 27

... NXP Semiconductors 11.5.6 Test patterns For test purposes, the ADC1112D125 can be configured to transmit one of a number of predefined test patterns (via bits TESTPAT_SEL[2:0]; see can be defined by the user (TESTPAT_USER[10:3]; see TESTPAT_USER[2:0]; see The selected test pattern is transmitted regardless of the analog input. 11.5.7 Output codes versus input voltage Table 16. − ...

Page 28

... At power-up, the device enters Pin control mode. A falling edge on pin CS triggers a transition to SPI control mode. When the ADC1112D125 enters SPI control mode, the output data standard (CMOS/LVDS DDR) is determined by the level on pin SDIO (see output data standard can be changed via bit LVDS_CMOS ...

Page 29

... NXP Semiconductors When the ADC1112D125 enters SPI control mode, the output data format (two’s complement or offset binary) is determined by the level on pin SCLK (gray code can only be selected via the SPI). Once in SPI control mode, the output data format can be changed via bit DATA_FORMAT[1:0] (see Fig 33. Default mode at start-up: SCLK LOW = offset binary ...

Page 30

Register allocation map Table 19. Register allocation map Address Register name Access (hex) Bit 7 0003 Channel index R/W 0005 Reset and R/W SW_ operating mode RST 0006 Clock R/W - 0008 Internal reference R/W - 0011 Output data ...

Page 31

... CLKM 1 CLKP R/W differential/single-ended clock input select 0 fully differential 1 single-ended - 0 reserved R/W clock input divide disabled 1 enabled R/W duty cycle stabilizer 0 disabled 1 enabled All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 32

... LSB and vice versa) R/W output data format 00 offset binary 01 two’s complement 10 gray code 11 offset binary All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 33

... All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 [1] clk [1] clk [1] clk [1] clk [1] clk [1] clk ...

Page 34

... DAV CMOS output buffer 00 low 01 medium 10 high 11 very high R/W drive strength for DATA CMOS output buffer 00 low 01 medium 10 high 11 very high All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 35

... All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 36

... 9.1 7.25 9.1 7.25 9.0 7.10 9.0 7.10 0.5 7.5 7.5 8.9 6.95 8.9 6.95 References JEDEC JEITA - - - - - - All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 detail 0.5 0.4 0.1 0.05 0.05 0.1 0.3 European projection SOT804 sot804-3_po Issue date 09-02-24 10-08-06 © NXP B.V. 2011. All rights reserved. ...

Page 37

... Low Voltage Differential Signalling Double Data Rate Low-Voltage Positive Emitter-Coupled Logic Most Significant Bit OuT-of-Range Spurious-Free Dynamic Range Signal-to-Noise Ratio Serial Peripheral Interface Transmitter All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 38

... NXP Semiconductors 14. Revision history Table 35. Revision history Document ID ADC1112D125 v.2 Modifications: ADC1112D125 v.1 ADC1112D125 Product data sheet Dual 11-bit ADC: CMOS or LVDS DDR digital outputs Release date Data sheet status 20110303 Product data sheet • Data sheet status changed from Preliminary to Product. • ...

Page 39

... Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 40

... NXP Semiconductors’ product specifications. 15.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. http://www.nxp.com salesaddresses@nxp.com All information provided in this document is subject to legal disclaimers. Rev. 2 — 3 March 2011 ADC1112D125 © NXP B.V. 2011. All rights reserved ...

Page 41

... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2011. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com ADC1112D125 All rights reserved. Date of release: 3 March 2011 Document identifier: ADC1112D125 ...

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