MAX9626 Maxim, MAX9626 Datasheet

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MAX9626

Manufacturer Part Number
MAX9626
Description
The MAX9626/MAX9627/MAX9628 are low-noise, low-distortion, and high-bandwidth differential amplifier/ADC drivers for use in applications from DC to 1
Manufacturer
Maxim
Datasheet
19-5569; Rev 1; 2/11
The MAX9626/MAX9627/MAX9628 are low-noise, low-
distortion, and high-bandwidth differential amplifier/ADC
drivers for use in applications from DC to 1.35GHz.
The exceptional low input-referred noise and low
distortion make these parts an excellent solution to
drive high-speed 12-bit to 16-bit pipeline ADCs. The
output common mode is set through the VOCM input
pin, thus eliminating the need for a coupling transformer
or AC-coupling capacitors. The ICs feature shutdown
mode for power savings and are offered in a 12-pin,
3mm x 3mm TQFN package for operation over a -40NC
to +125NC temperature range.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Communication
Medical Imaging
ATE
High-Performance Instrumentation
_______________________________________________________________ Maxim Integrated Products 1
General Description
SINGLE-ENDED
1.35GHz Fully Differential Amplifiers
INPUT
Applications
R
R
S
S
RT+
RT-
IN-
IN+
HIGH-SPEED PIPELINE ADC
DRIVING THE MAX19588
Low-Noise, Low-Distortion,
R
R
T
T
SHDNB
R
R
G
G
MAX9626
MAX9627
MAX9628
S
S
S
S
S
S
S
S
S
Note: All devices are specified over the -40°C to +125°C
operating temperature range.
*EP = Exposed pad.
VOCM
MAX9626ATC+
MAX9627ATC+
MAX9628ATC+
Low-Voltage Noise Density 3.6nV/√Hz
Low Harmonic Distortion
Factory Set Gain Options: 1V/V, 2V/V, 4V/V
1.35GHz Small-Signal Bandwidth
Adjustable Output Common-Mode Voltage
Differential-to-Differential or Single-Ended-to-
Differential Operation
25µA Shutdown Current
+2.85V to +5.25V Single-Supply Voltage
Small, 3mm x 3mm 12-Pin TQFN Package
V
HD2/HD3 of -102/-105dB at 10MHz
HD2/HD3 of -86/-80dB at 125MHz
CC
PART
R
F
R
F
V
V
CC
EE
Typical Operating Circuit
OUT+
OUT-
GAIN (dB)
PIPELINE ADC
Ordering Information
1
2
4
MAX19588
VREF
PIN-PACKAGE
12 TQFN-EP*
12 TQFN-EP*
12 TQFN-EP*
Features
MARK
+ABU
+ABS
+ABT
TOP

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MAX9626 Summary of contents

Page 1

... Rev 1; 2/11 1.35GHz Fully Differential Amplifiers General Description The MAX9626/MAX9627/MAX9628 are low-noise, low- distortion, and high-bandwidth differential amplifier/ADC drivers for use in applications from DC to 1.35GHz. The exceptional low input-referred noise and low distortion make these parts an excellent solution to drive high-speed 12-bit to 16-bit pipeline ADCs. The ...

Page 2

... MAX9628 64 92 MAX9626 60 89 MAX9627 63 92 MAX9628 64 92 MAX9626 1 MAX9627 2 MAX9628 4 MAX9626 -2 +2 ±0.2 MAX9627 -2 +2 ±0.2 MAX9628 -2 +2 ±0.2 MAX9626 2 ±11 MAX9627 2 ±8 MAX9628 2 ±8 MAX9626 2 ±13 MAX9627 2 ±10 MAX9628 2 ±10 MAX9626 -1.5 +1.5 MAX9627 -0.75 +1.5 MAX9628 -0.4 +1.5 = -40° UNITS V ...

Page 3

... EE EE 0.65 0.9 100 100 200 225 312 267 225 209 64 MAX9626 1150 MAX9627 1350 MAX9628 1000 MAX9626 80 MAX9627 80 MAX9628 90 MAX9626 6500 MAX9627 6100 MAX9628 5500 MAX9626 64 MAX9627 65 MAX9628 62 MAX9626 5.7 MAX9627 4.3 MAX9628 3.6 MAX9626 22.2 MAX9627 19.7 MAX9628 18.1 = -40° UNITS MHz MHz V/Fs dB nV/√ ...

Page 4

... Note 3: Limits are guaranteed by design based on bench characterization. Testing is functional using different limits / VOCM CC CONDITIONS MAX9626 f = 10MHz OUT+ OUT- MAX9627 = 2. MAX9628 HD MAX9626 f = 125MHz OUT+ OUT- MAX9627 = 2.0V P- MAX9628 No sustained oscillation LOAD Guaranteed by VOCM CMRR test VOCM -1.1V, VOCM CC VOCM = -40° ...

Page 5

... FREQUENCY (kHz) = 500ω, single ended. Plot applies to all L HARMONIC DISTORTION vs. FREQUENCY R = 1kI -40 MAX9626 -50 -60 HD2 -70 -80 -90 HD3 -100 -110 10,000 100,000 FREQUENCY (kHz) HARMONIC DISTORTION vs. FREQUENCY R = 1kI -40 MAX9627 ...

Page 6

... HD3 -110 -120 1000 0 100 200 300 400 500 600 700 800 LOAD (I) HARMONIC DISTORTION vs. DIFFERENTIAL OUTPUT SWING f = 125MHz -60 MAX9626 -70 -80 HD2 -90 -100 -110 HD3 -120 3.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 1.0 OUTPUT SWING ( / 500ω, single ended. Plot applies to all ...

Page 7

... CC -60 MAX9628 -70 -80 HD2 -90 -100 HD3 -110 -120 3.0 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 OUTPUT SWING (V) SMALL-SIGNAL BANDWIDTH vs. FREQUENCY 100I 100mV P SIG 10 MAX9626 -10 1M 10M 100M 1G 10G FREQUENCY (Hz) SMALL-SIGNAL BANDWIDTH vs. FREQUENCY V = 3.3V 100I 100mV CC L SIG 10 MAX9628 ...

Page 8

... FREQUENCY (Hz) LARGE-SIGNAL BANDWIDTH vs. FREQUENCY 100I P-P 10 MAX9628 -10 1M 10M 100M 10G FREQUENCY (Hz) SMALL-SIGNAL BANDWIDTH vs. V 1.4 1 3.3V 1.0 CC 0.8 0.6 0.4 0.2 MAX9626 0 900 1000 1.0 1.5 2.0 2.5 V (V) VOCM = 2V SIG P-P 1G 10G = 2V SIG P-P 1G 10G VOCM 3.0 3.5 4.0 ...

Page 9

... V (V) VOCM INPUT REFERRED VOLTAGE NOISE vs. FREQUENCY 1000 MAX9627 100 100 1k 10k 100k 1M FREQUENCY (Hz) COMMON-MODE REJECTION RATIO vs. FREQUENCY (MAX9626 0 100 FREQUENCY (MHz) Low-Noise, Low-Distortion, Typical Operating Characteristics (continued 0V ICM VOCM SMALL-SIGNAL BANDWIDTH vs ...

Page 10

... Low-Noise, Low-Distortion, 1.35GHz Fully Differential Amplifiers (V = +3.3V 0V 0V, SHDN = IN- IN+ versions, unless noted otherwise.) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (MAX9626) 100 0.01 0 100 FREQUENCY (MHz) OFFSET VOLTAGE HISTOGRAM (MAX9626 ...

Page 11

... Plot applies to all PARAMETERS vs. FREQUENCY (MAX9626) 0 -20 S11 -40 -60 S22 -80 S12 -100 -120 1 10 100 75 100 FREQUENCY (MHz) INTERMODULATION DISTORTION vs. FREQUENCY (MAX9626, V -50 FREQUENCY SPACING = 100kHz -55 IMD2, V OUT -60 IMD2 OUT P-P -65 -70 -75 -80 IMD3, V OUT -85 -90 IMD3 OUT ...

Page 12

... P-P -70 -80 -90 175 200 1 10 100 FREQUENCY (MHz) VOCM TRANSIENT RESPONSE (MAX9626 1.6V TO 1.7V STEP) IN 50mV/div VOCM OUT_CM 50mV/div 10,000 2ns/div VOCM TRANSIENT RESPONSE (MAX9627 1.15V TO 2.15V STEP) IN MAX9626 toc52o 500mV/div VOCM OUT_CM 500mV/div 2ns/div 1000 10,000 MAX9626 toc52m MAX9626 toc52p ...

Page 13

... TO 100mV STEP 1.65V) OCM INP 50mV/div OUT_DIFF 40mV/div 2ns/div LARGE-SIGNAL TRANSIENT RESPONSE (MAX9626 STEP 1.65V) OCM MAX9626 toc55 INP 1V/div OUT_DIFF 400mV/div 2ns/div = 0 TO 250mV STEP 1.65V) OCM MAX9626 toc58 INP OUT_DIFF 2ns/div MAX9626 toc53 MAX9626 toc56 ...

Page 14

... Active-Low Shutdown Mode Input SHDN 9 OUT- Inverting Differential Output 10 Negative Supply Voltage EE 12 RT+ Termination Resistor Terminal for IN+ — EP Exposed Pad. Connected MAX9626 MAX9627 MAX9628 TQFN FUNCTION . EE Pin Configuration ...

Page 15

... Fully Differential Amplifiers Detailed Description The MAX9626/MAX9627/MAX9628 family employs voltage feedback to implement a differential-in to differential-out amplifier. On-chip feedback resistors set the gain of the amplifier. The use of on-chip resistors not only saves cost and space, but also maximizes the overall amplifier’s performance. ...

Page 16

... GAIN (V/V) 0.48 0.95 1. and Figure 1. MAX9626 Input Common-Mode Voltage vs. Output Common-Mode Voltage of the Amplifier Figure 2. MAX9627 Input Common-Mode Voltage vs. Output Common-Mode Voltage of the Amplifier ) ( AMP Figure 3. MAX9628 Input Common-Mode Voltage vs. Output Common-Mode Voltage of the Amplifier 2 ...

Page 17

... ADCs in the market. In particular recom- mended in combination with the MAX19586/MAX19588 family of 16-bit and 100Msps pipeline ADCs. For lower resolution applications, the MAX9626/ MAX9627/MAX9628 family can also drive 10- to 14-bit ADCs such as the MAX12553/MAX12554/MAX12555, MAX12527/MAX12528/MAX12529 MAX19506/MAX19507 families ...

Page 18

... Fully Differential Amplifiers For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...

Page 19

... Fully Differential Amplifiers For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...

Page 20

... Internal Terminations section, and added new typical operating characteristics 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. ...

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