MAX105ECS+ Maxim Integrated Products, MAX105ECS+ Datasheet

IC ADC 6BIT 800MSPS DL 80TQFP

MAX105ECS+

Manufacturer Part Number
MAX105ECS+
Description
IC ADC 6BIT 800MSPS DL 80TQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX105ECS.pdf (21 pages)

Specifications of MAX105ECS+

Number Of Bits
6
Sampling Rate (per Second)
800M
Data Interface
Parallel
Number Of Converters
2
Power Dissipation (max)
2.6W
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
80-TQFP Exposed Pad, 80-eTQFP, 80-HTQFP, 80-VQFP
Number Of Adc Inputs
2
Conversion Rate
800 MSPs
Resolution
6 bit
Snr
37 dB
Voltage Reference
2.5 V
Supply Voltage (max)
3.6 V
Supply Voltage (min)
3 V
Maximum Power Dissipation
3.5 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Input Voltage
3.3 V
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX105 is a dual, 6-bit, analog-to-digital converter
(ADC) designed to allow fast and precise digitizing of
in-phase (I) and quadrature (Q) baseband signals. The
MAX105 converts the analog signals of both I and Q
components to digital outputs at 800Msps while achiev-
ing a signal-to-noise ratio (SNR) of typically 37dB with
an input frequency of 200MHz, and an integral nonlin-
earity (INL) and differential nonlinearity (DNL) of ±0.25
LSB. The MAX105 analog input preamplifiers feature a
400MHz, -0.5dB, and a 1.5GHz, -3dB analog input
bandwidth. Matching channel-to-channel performance
is typically 0.04dB gain, 0.1LSB offset, and 0.2 degrees
phase. Dynamic performance is 36.4dB signal-to-noise
plus distortion (SINAD) with a 200MHz analog input sig-
nal and a sampling speed of 800MHz. A fully differen-
tial comparator design and encoding circuits reduce
out-of-sequence errors, and ensure excellent
metastable performance of only one error per 10
cycles.
In addition, the MAX105 provides LVDS digital outputs
with an internal 6:12 demultiplexer that reduces the out-
put data rate to one-half the sample clock rate. Data is
output in two’s complement format. The MAX105 oper-
ates from a +5V analog supply and the LVDS output
ports operate at +3.3V. The data converter’s typical
power dissipation is 2.6W. The device is packaged in
an 80-pin, TQFP package with exposed paddle, and is
specified for the extended (-40°C to +85°C) tempera-
ture range. For a lower-speed, 400Msps version of the
MAX105, please refer to the MAX107 data sheet.
19-2006; Rev 0; 5/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pin Configuration appears at end of data sheet.
VSAT Receivers
WLANs
Test Instrumentation
Communications Systems
________________________________________________________________ Maxim Integrated Products
Dual, 6-Bit, 800Msps ADC with On-Chip,
General Description
Applications
16
clock
Wideband Input Amplifier
o Two Matched 6-Bit, 800Msps ADCs
o Excellent Dynamic Performance
o Typical INL and DNL: ±0.25LSB
o Channel-to-Channel Phase Matching: ±0.2°
o Channel-to-Channel Gain Matching: ±0.04dB
o 6:12 Demultiplexer reduces the Data Rates to
o Low Error Rate: 10
o LVDS Digital Outputs in Two’s Complement
MAX105ECS
400MHz
800Msps
Format
PART
36.4dB SINAD at f
f
CLK
≈ 800MHz
TEMP. RANGE
-40°C to +85°C
REF
Ordering Information
16
Metastable States at
IN
Q ADC
I ADC
≈ 200MHz and
MAX107
Block Diagram
AUXILIARY
AUXILIARY
PRIMARY
PRIMARY
PORT
PORT
PORT
PORT
80-Pin TQFP-EP
PIN-PACKAGE
Q
Q
I
I
Features
1

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MAX105ECS+ Summary of contents

Page 1

... VSAT Receivers WLANs Test Instrumentation Communications Systems Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Wideband Input Amplifier o Two Matched 6-Bit, 800Msps ADCs o Excellent Dynamic Performance 36 ...

Page 2

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier ABSOLUTE MAXIMUM RATINGS and AGND............-0. and OGND ...................................-0.3V to +4V CC ...

Page 3

Dual, 6-Bit, 800Msps ADC with On-Chip, ELECTRICAL CHARACTERISTICS (continued) ( +5V 802.816MHz 1µF to AGND at REF, R CLK ...

Page 4

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier ELECTRICAL CHARACTERISTICS (continued) ( +5V 802.816MHz 1µF to AGND at ...

Page 5

Dual, 6-Bit, 800Msps ADC with On-Chip, ELECTRICAL CHARACTERISTICS (continued) ( +5V 802.816MHz 1µF to AGND at REF, R CLK ...

Page 6

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier ( +5V 802.816MHz, differential input at -0.5dB FS, C CLK ...

Page 7

Dual, 6-Bit, 800Msps ADC with On-Chip, ( +5V 802.816MHz, differential input at -0.5dB FS, C CLK unless otherwise noted. ...

Page 8

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier ( +5V 802.816MHz, differential input at -0.5dB FS, C CLK ...

Page 9

Dual, 6-Bit, 800Msps ADC with On-Chip, PIN NAME 1, 20 T.P. Test Point. Do not connect. 2 REF Reference Output Analog Reference Supply. Supply voltage for the internal bandgap reference. Bypass to AGNDR with 0.01µF in ...

Page 10

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier PIN NAME 31 A3Q+ Auxiliary Output Data Bit 3, Q-Channel 32 A3Q- Complementary Auxiliary Output Data Bit 3, Q-Channel 33 P3Q+ Primary Output Data Bit 3, Q-Channel 34 P3Q- Complementary Primary ...

Page 11

Dual, 6-Bit, 800Msps ADC with On-Chip, PIN NAME 62 P2I+ Primary Output Data Bit 2, I-Channel 63 A2I- Complementary Auxiliary Output Data Bit 2, I-Channel 64 A2I+ Auxiliary Output Data Bit 2, I-Channel I-Channel Outputs, Digital Supply. Supplies I-channel output ...

Page 12

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier INI+ PRE-AMP INI- 2kΩ CM BUFFER CM BUFFER 2kΩ INQ+ PRE-AMP INQ- Figure 1. MAX105 Flash Converter Architecture signal-to-noise ratio (SNR) specifications will degrade. The MAX105’s on-board, wide-bandwidth input ampli- fiers ...

Page 13

Dual, 6-Bit, 800Msps ADC with On-Chip, Table 1. Digital Output Codes Corresponding to a DC-Coupled Single-Ended Analog Input IN-PHASE INPUTS (INI+, INQ+) > +400mV + V AC – Coupled to AGND_ REF +400mV - 0.5LSB + V AC – Coupled ...

Page 14

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier 50Ω D 0° 0° A SIGNAL SOURCE 50Ω 0° 180° C 50Ω *TERMINATION OF THE UNUSED INPUT/OUTPUT (WITH 50Ω TO AGND BALUN IS RECOMMENDED IN ORDER TO AVOID UNWANTED ...

Page 15

Dual, 6-Bit, 800Msps ADC with On-Chip, ADC SAMPLE CLK- N N+1 N+2 N+3 CLK CLK+ DREADY- DREADY DREADY+ AUXILIARY DATA PORT PRIMARY DATA PORT NOTE: THE LATENCY TO THE PRIMARY PORT IS FIVE CLOCK CYCLES, THE LATENCY TO THE AUXILIARY ...

Page 16

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier FROM PREVIOUS STAGE MAX2108 QUADRATURE DEMODULATOR NYQUIST PRE-AMP FILTER 2kΩ LO 90° 2kΩ NYQUIST PRE-AMP FILTER Figure 8. Typical I/Q Application Grounding, Bypassing, and Board Layout Grounding and power supply decoupling ...

Page 17

Dual, 6-Bit, 800Msps ADC with On-Chip, PC BOARD AV CC 10µF PC BOARD AGND PC BOARD OV CC 10µF PC BOARD OGND 10nF AGNDR 10nF AGNDI 10nF AGNDQ AV CC 10nF ...

Page 18

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier THERMAL LAND COPPER PLANE, 1oz. COPPER TRACE, 1oz. TOP LAYER GROUND PLANE AGND, DGND POWER PLANE GROUND PLANE (AGND ARRAY OF THERMAL VIAS Figure 10. MAX105 Exposed Pad ...

Page 19

Dual, 6-Bit, 800Msps ADC with On-Chip, CLK- CLK ANALOG INPUT t : APERTURE WIDTH APERTURE JITTER APERTURE DELAY AD SAMPLING INSTANT Figure 11. Aperture Timing clock design limits ...

Page 20

Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier T.P. 1 REF AGNDR 4 AGNDI 5 INI- 6 INI+ 7 AGNDI CLK+ 10 CLK AGNDQ ...

Page 21

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 21 © 2001 Maxim Integrated Products ...

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