MAX1198ECM+D Maxim Integrated Products, MAX1198ECM+D Datasheet

IC ADC 8BIT 100MSPS DUAL 48-TQFP

MAX1198ECM+D

Manufacturer Part Number
MAX1198ECM+D
Description
IC ADC 8BIT 100MSPS DUAL 48-TQFP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1198ECM+D

Number Of Bits
8
Sampling Rate (per Second)
100M
Data Interface
Parallel
Number Of Converters
2
Power Dissipation (max)
314mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
Conversion Rate
100 MSPs
Resolution
8 bit
Snr
48.5 dB
Voltage Reference
2.048 V
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Maximum Power Dissipation
1000 mW
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 MAX1198 is a 3.3V, dual, 8-bit analog-to-digital con-
verter (ADC) featuring fully differential wideband track-
and-hold (T/H) inputs, driving two ADCs. The MAX1198
is optimized for low power, small size, and high-dynamic
performance for applications in imaging, instrumenta-
tion, and digital communications. This ADC operates
from a single 2.7V to 3.6V supply, consuming only
264mW, while delivering a typical signal-to-noise and
distortion (SINAD) of 48.1dB at an input frequency of
50MHz and a sampling rate of 100Msps. The T/H-driven
input stages incorporate 400MHz (-3dB) input ampli-
fiers. The converters may also be operated with single-
ended inputs. In addition to low operating power, the
MAX1198 features a 3.2mA sleep mode, as well as a
0.15µA power-down mode to conserve power during
idle periods.
An internal 2.048V precision bandgap reference sets
the full-scale range of the ADC. A flexible reference
structure allows the use of this internal or an externally
applied reference, if desired, for applications requiring
increased accuracy or a different input voltage range.
The MAX1198 features parallel, CMOS-compatible three-
state outputs. The digital output format can be set to two’s
complement or straight offset binary through a single con-
trol pin. The device provides for a separate output power
supply of 1.7V to 3.6V for flexible interfacing with various
logic families. The MAX1198 is available in a 7mm x 7mm,
48-pin TQFP package, and is specified for the extended
industrial (-40°C to +85°C) temperature range.
Pin-compatible lower speed versions of the MAX1198
are also available. Refer to the MAX1195 data sheet for
40Msps and the MAX1197 data sheet for 60Msps. In
addition to these speed grades, this family includes a
multiplexed output version (MAX1196, 40Msps), for
which digital data is presented time interleaved and on
a single, parallel 8-bit output port.
For a 10-bit, pin-compatible upgrade, refer to the
MAX1180 data sheet. With the N.C. pins of the
MAX1198 internally pulled down to ground, this ADC
becomes a drop-in replacement for the MAX1180.
19-2412; Rev 0; 4/02
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.
Baseband I/Q Sampling
Multichannel IF Sampling
Ultrasound and Medical
Imaging
Battery-Powered
Instrumentation
with Internal Reference and Parallel Outputs
Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC
________________________________________________________________ Maxim Integrated Products
General Description
WLAN, WWAN, WLL,
MMDS Modems
Set-Top Boxes
VSAT Terminals
Applications
o Single 2.7V to 3.6V Operation
o Excellent Dynamic Performance
o -72dB Interchannel Crosstalk at f
o Low Power
o 0.05dB Gain and ±0.1° Phase Matching
o Wide ±1V
o 400MHz -3dB Input Bandwidth
o On-Chip 2.048V Precision Bandgap Reference
o User-Selectable Output Format—Two’s
o Pin-Compatible 8-Bit and 10-Bit Upgrades
*EP = Exposed paddle
Functional Diagram and Pin Compatible Upgrades table
appear at end of data sheet.
Range
Complement or Offset Binary
Available
MAX1198ECM
48.1dB/47.6dB SINAD at f
66dBc/61.5dBc SFDR at f
264mW (Normal Operation)
10.6mW (Sleep Mode)
0.5µW (Shutdown Mode)
COM
INA+
INB+
GND
GND
GND
INA-
INB-
CLK
V
V
V
PART
DD
DD
DD
10
11
12
1
2
3
4
5
6
7
8
9
P-P
Differential Analog Input Voltage
-40°C to +85°C
TEMP RANGE
Ordering Information
MAX1198
TQFP-EP
Pin Configuration
IN
IN
= 50MHz/200MHz
= 50MHz/200MHz
IN
= 50MHz
PIN-PACKAGE
48 TQFP-EP*
Features
36
35
34
33
32
31
30
29
28
27
26
25
N.C.
N.C.
OGND
OV
OV
OGND
N.C.
N.C.
D0B
D1B
D2B
D3B
DD
DD
1

Related parts for MAX1198ECM+D

MAX1198ECM+D Summary of contents

Page 1

... Set-Top Boxes Ultrasound and Medical Imaging VSAT Terminals Battery-Powered Instrumentation ________________________________________________________________ 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. o Single 2.7V to 3.6V Operation o Excellent Dynamic Performance 48.1dB/47.6dB SINAD at f 66dBc/61.5dBc SFDR at f ...

Page 2

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs ABSOLUTE MAXIMUM RATINGS GND ...............................................-0.3V to +3. OGND to GND.......................................................-0.3V to +0.3V INA+, INA-, INB+, INB- to GND ...............................-0. REFIN, ...

Page 3

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3.3V 2.5V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 4

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3.3V 2.5V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 5

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3.3V 2.5V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 6

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3.3V 2.5V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 7

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs (V = 3.3V 2.5V 2.048V, differential input at -1dB FS REFIN noted.) FFT PLOT CHA (DIFFERENTIAL INPUT, 8192-POINT DATA RECORD) 0 ...

Page 8

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs (V = 3.3V 2.5V 2.048V, differential input at -1dB FS REFIN noted.) SNR/SINAD, THD/SFDR vs. TEMPERATURE 19.87089082MHz IN ...

Page 9

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs (V = 3.3V 2.5V 2.048V, differential input at -1dB FS REFIN noted.) GAIN ERROR vs. TEMPERATURE, EXTERNAL REFERENCE V = 2.048V ...

Page 10

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs PIN NAME Common-Mode Voltage I/O. Bypass to GND with a ≥0.1µF capacitor. 1 COM Analog Supply Voltage. Bypass to GND with a capacitor combination of 2.2µF in parallel ...

Page 11

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs PIN NAME 42 D5A Three-State Digital Output, Bit 5, Channel A 43 D6A Three-State Digital Output, Bit 6, Channel A 44 D7A Three-State Digital Output, Bit 7 (MSB), ...

Page 12

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs S4a INA+ INA- S4b S4a INB+ INB- S4b Figure 2. MAX1198 T/H Amplifiers are closed. The fully differential circuits sample the input signals onto the two capacitors (C2a ...

Page 13

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs ANALOG INPUT CLOCK INPUT t DO DATA OUTPUT D7A–D0A DATA OUTPUT D7B–D0B Figure 3. System Timing Diagram Match the impedance of INA+ ...

Page 14

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs DISABLE ENABLE OUTPUT HIGH-Z VALID DATA D7A–D0A OUTPUT HIGH-Z VALID DATA D7B–D0B Figure 4. Output Timing Diagram The MAX1198 clock input operates with a voltage ...

Page 15

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs 300Ω 300Ω +5V 0.1µF INPUT MAX4108 0.1µF -5V 300Ω 300Ω 300Ω +5V 300Ω 0.1µF 0.1µF INPUT MAX4108 0.1µF -5V 300Ω 300Ω Figure 5. Typical Application for Single-Ended-to-Differential Conversion ...

Page 16

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs 25Ω 22pF 0.1µ N.C. 2.2µF 0.1µ MINICIRCUITS TT1–6-KK81 25Ω 22pF 25Ω 22pF 0.1µ ...

Page 17

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs 3.3V 0.1µF 0.1µF 1 16.2kΩ 2 MAX6062 1µF 3 10Hz LOWPASS FILTER NOTE: ONE FRONT-END REFERENCE CIRCUIT DESIGN MAY BE USED WITH UP TO 1000 ADCs. Figure 8. ...

Page 18

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs 3.3V 0.1µF 1 2.0V 21.5kΩ 2 MAX6066 3 21.5kΩ 1.5V 1µF 21.5kΩ 3.3V 1.0V 0.1µF 10 21.5kΩ MAX4254 POWER-SUPPLY BYPASSING. PLACE CAPACITOR 21.5kΩ AS CLOSE AS POSSIBLE TO ...

Page 19

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs Figure 10. Typical QAM Application Using the MAX1198 CLK ANALOG INPUT SAMPLED DATA (T/H) TRACK HOLD T/H Figure 11. T/H Aperture Timing physical location ...

Page 20

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs In reality, there are other noise sources besides quanti- zation noise: thermal noise, reference noise, clock jitter, etc. SNR is computed by taking the ratio of the RMS ...

Page 21

Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs V DD GND INA+ T/H INA- CLK INB+ T/H INB- REFOUT Pin-Compatible Upgrades (Sampling Speed and Resolution) 8-BIT PART 10-BIT PART MAX1195 MAX1183 MAX1197 MAX1182 MAX1198 MAX1180 MAX1196* ...

Page 22

... 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. 22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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