MAX5195EGM MAXIM [Maxim Integrated Products], MAX5195EGM Datasheet

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MAX5195EGM

Manufacturer Part Number
MAX5195EGM
Description
14-Bit, 260Msps High-Dynamic Performance DAC
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
The MAX5195 is an advanced, 14-bit, 260Msps digital-
to-analog converter (DAC) designed to meet the
demanding performance requirements of signal synthe-
sis applications found in wireless base stations and
other communication systems. Operating from a single
5V supply, this DAC offers exceptional dynamic perfor-
mance such as 77dBc spurious-free dynamic range
(SFDR) at f
rates beyond 260Msps.
The MAX5195 current-source array architecture sup-
ports a full-scale current range of 10mA to 20mA, which
allows a differential output voltage swing between
0.5V
The MAX5195 features an integrated 1.2V bandgap ref-
erence and control amplifier to ensure high accuracy
and low-noise performance. Additionally, a separate
reference input pin allows the user to apply an external
reference source for optimum flexibility.
The digital and clock inputs of the MAX5195 are
designed for differential LVPECL-compatible voltage
levels.
The MAX5195 is available in a 48-lead QFN package
with exposed paddle and is specified for the extended
industrial temperature range (-40°C to +85°C).
19-2557; Rev 0; 7/02
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.
P-P
Base Stations:
LMDS, MMDS, Point-to-Point Microwave
Direct IF Synthesis
Digital-Signal Synthesis
Broadband Cable Systems
Automated Test Equipment
Instrumentation
and 1V
Single-/Multi-Carrier UMTS, GSM
OUT
P-P
= 19.4MHz, while supporting update
________________________________________________________________ Maxim Integrated Products
.
General Description
Applications
14-Bit, 260Msps High-Dynamic
o 260Msps Output Update Rate
o Excellent SFDR Performance
o Industry-Leading IMD Performance
o Low Noise Performance
o On-Chip 1.2V Bandgap Reference
o 20mA Full-Scale Current
o Single 5V Supply
o Differential LVPECL-Compatible Digital Inputs
o 48-Lead QFN-EP Package
*EP = Exposed paddle.
MAX5195EGM
SNR = 160dB/Hz at f
TOP VIEW
CLKN
CLKP
To Nyquist (-12dBFS)
For 4 Tones (-15dBFS)
D9P
D8N
D8P
D7N
D7P
D6N
D6P
D5N
D5P
D4N
PART
At 19.4MHz Output = 77dBc
At 51.6MHz Output = 76dBc
At 18MHz Output = 86dBc
At 31MHz Output = 84dBc
10
11
12
1
2
3
4
5
6
7
8
9
Performance DAC
Ordering Information
-40°C to +85°C
TEMP RANGE
MAX5195
OUT
QFN
Pin Configuration
= 19.4MHz
PIN-PACKAGE
48 QFN-EP*
Features
36
35
34
33
32
31
30
29
28
27
26
25
AV
AMPOUT
AV
AV
OUTP
OUTN
AV
AGND
AGND
REFOUT
AV
RSET
CC
CC
CC
CC
CC
1

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MAX5195EGM Summary of contents

Page 1

... At 18MHz Output = 86dBc At 31MHz Output = 84dBc o Low Noise Performance SNR = 160dB/ On-Chip 1.2V Bandgap Reference o 20mA Full-Scale Current o Single 5V Supply o Differential LVPECL-Compatible Digital Inputs o 48-Lead QFN-EP Package PART MAX5195EGM Applications *EP = Exposed paddle. TOP VIEW D9P D8N D8P D7N D7P CLKP CLKN ...

Page 2

High-Dynamic Performance DAC ABSOLUTE MAXIMUM RATINGS AGND..............................................-0. DGND..............................................-0. AGND to DGND.....................................................-0.3V to +0.3V D0N–D013, D0P–D13P, T.P. to DGND .................-0.3V to +3.6V OUTP, ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) ( 5V, AGND = DGND = 0, external reference 3.83kΩ 156MHz SET CLK A PARAMETER SYMBOL 3rd-Order Harmonic Distortion, -12dBFS 2-Tone IMD, -9dBFS, 200kHz ...

Page 4

High-Dynamic Performance DAC ELECTRICAL CHARACTERISTICS (continued) ( 5V, AGND = DGND = 0, external reference 3.83kΩ 156MHz SET CLK A MIN PARAMETER SYMBOL ANALOG OUTPUT ...

Page 5

DV = 5V, external reference 3.83kΩ +25°C, unless otherwise noted.) P-P SET A INTEGRAL NONLINEARITY 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 0 2048 4096 6144 8192 ...

Page 6

High-Dynamic Performance DAC ( 5V, external reference 3.83kΩ +25°C, unless otherwise noted.) P-P SET A SPURIOUS-FREE DYNAMIC RANGE vs. OUTPUT FREQUENCY (f = 208.096MHz) CLK 100 ...

Page 7

DV = 5V, external reference 3.83kΩ +25°C, unless otherwise noted.) P-P SET A MULTITONE (8 TONES) POWER RATIO vs. CLOCK FREQUENCY -70.0 32MHz/-24dBFS -73.0 18MHz/-24dBFS -76.0 32MHz/-21dBFS -79.0 18MHz/-21dBFS ...

Page 8

High-Dynamic Performance DAC PIN NAME 23 D0P Data Bit 0 (LSB) 24 T.P. Test Point. Must be connected to LVPECL high level (2.4V) for optimum dynamic performance. 25, 29, 32, Analog Supply Voltage. Accepts a 4.75V to 5.25V ...

Page 9

Detailed Description The MAX5195 is a high-performance, 14-bit, segmented current-source array DAC (Figure 1) capable of operat- ing with clock speeds up to 260MHz. The converter consists of separate input and DAC registers, followed by a current-source array. This current-source ...

Page 10

High-Dynamic Performance DAC Table 1. I and R Selection Matrix Based on a Typical 1.2V Reference Voltage FS SET FULL-SCALE CURRENT REFERENCE CURRENT I (mA REF *Terminated into a 27.4Ω ...

Page 11

Table 2. LVPECL Voltage Levels PARAMETER Input Voltage High Input Voltage Low Common-Mode Level **V is the supply voltage associated with the LVPECL source. A typical V CC common-mode level to 2V, allowing a typical peak-to-peak signal swing of 0.8V. ...

Page 12

High-Dynamic Performance DAC R2R R2R 285Ω 285Ω AV AMPOUT AGND R LOAD THE INTERNAL R2R RESISTOR MAX5195 NETWORK IN PARALLEL WITH THE EXTERNAL TERMINATION RESISTOR. Figure 5. Simplified Output Architecture With a full-scale ...

Page 13

D0–D13 14 MAX5195 Figure 7a. Single-Ended Unbuffered Output Configuration D0–D13 14 MAX5195 Figure 7b. Single-Ended Buffered Output Configuration swing of 1V (0.5V single ended) when applying a P-P P-P full-scale current of 20mA. Alternatively, an external unity-gain amplifier can be ...

Page 14

High-Dynamic Performance DAC Grounding, Bypassing, and Power-Supply Grounding and power-supply decoupling can strongly influence the performance of the MAX5195. Unwanted digital crosstalk can couple through the input, refer- ence, power supply, and ground connections, thus affecting dynamic performance. ...

Page 15

The power-supply voltages should also be decoupled at the point where they enter the PC board with tanta- lum or electrolytic capacitors. Ferrite beads with addi- tional decoupling capacitors forming a π network can also improve performance. The analog and ...

Page 16

High-Dynamic Performance DAC The offset error is the difference between the ideal and the actual offset point. For a DAC, the offset point is the step value when the digital input is at midscale. This error affects all ...

Page 17

For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim ...

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