HMCAD1040-40TR [HITTITE]
ADC, Proprietary Method;
| 型号： | HMCAD1040-40TR |
| 厂家： | 
HITTITE MICROWAVE CORPORATION |
| 描述： | ADC, Proprietary Method 转换器 |
| 文件： | 总14页 (文件大小：735K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
Gꢈꢁꢈꢇꢅꢆ Dꢈscꢇꢃpꢂꢃꢄꢁ
Fꢈꢅꢂꢀꢇꢈs
•ꢀ 10-biꢁ rꢂꢃꢄluꢁiꢄꢅ
thꢂ HMCAD1040-40 iꢃ a high pꢂꢆfꢄꢆmaꢅcꢂ lꢄw
pꢄwꢂꢆ dual aꢅalꢄg-ꢁꢄ-digiꢁal cꢄꢅꢀꢂꢆꢁꢂꢆ (ADC). thꢂ
ADC ꢂmplꢄyꢃ iꢅꢁꢂꢆꢅal ꢆꢂfꢂꢆꢂꢅcꢂ ciꢆcuiꢁꢆy, a CMos
cꢄꢅꢁꢆꢄl iꢅꢁꢂꢆfacꢂ, CMos ꢄuꢁpuꢁ daꢁa aꢅd iꢃ baꢃꢂd
ꢄꢅ a pꢆꢄpꢆiꢂꢁaꢆy ꢃꢁꢆucꢁuꢆꢂ. Digiꢁal ꢂꢆꢆꢄꢆ cꢄꢆꢆꢂcꢁiꢄꢅ iꢃ
ꢂmplꢄyꢂd ꢁꢄ ꢂꢅꢃuꢆꢂ ꢅꢄ miꢃꢃiꢅg cꢄdꢂꢃ iꢅ ꢁhꢂ cꢄmplꢂꢁꢂ
full ꢃcalꢂ ꢆaꢅgꢂ.
•ꢀ 20/40 MsPs Maximum sampliꢅg raꢁꢂ
•ꢀ Ulꢁꢆa-Lꢄw Pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ: 24/43 mW
•ꢀ 61.6 dB snr @ 8 MHz
•ꢀ Iꢅꢁꢂꢆꢅal rꢂfꢂꢆꢂꢅcꢂ Ciꢆcuiꢁꢆy
•ꢀ 1.8 v Cꢄꢆꢂ supply vꢄlꢁagꢂ
•ꢀ 1.7 – 3.6 v I/o supply vꢄlꢁagꢂ
•ꢀ Paꢆallꢂl CMos ouꢁpuꢁ
sꢂꢀꢂꢆal idlꢂ mꢄdꢂꢃ wiꢁh faꢃꢁ ꢃꢁaꢆꢁup ꢁimꢂꢃ ꢂxiꢃꢁ. each
chaꢅꢅꢂl caꢅ bꢂ iꢅdꢂpꢂꢅdꢂꢅꢁly pꢄwꢂꢆꢂd dꢄwꢅ aꢅd
ꢁhꢂ ꢂꢅꢁiꢆꢂ chip caꢅ ꢂiꢁhꢂꢆ bꢂ puꢁ iꢅ sꢁaꢅdby Mꢄdꢂ ꢄꢆ
Pꢄwꢂꢆ Dꢄwꢅ mꢄdꢂ. thꢂ diffꢂꢆꢂꢅꢁ mꢄdꢂꢃ aꢆꢂ ꢄpꢁimizꢂd
ꢁꢄ allꢄw ꢁhꢂ uꢃꢂꢆ ꢁꢄ ꢃꢂlꢂcꢁ ꢁhꢂ mꢄdꢂ ꢆꢂꢃulꢁiꢅg iꢅ ꢁhꢂ
lꢄwꢂꢃꢁ pꢄꢃꢃiblꢂ ꢂꢅꢂꢆgy cꢄꢅꢃumpꢁiꢄꢅ duꢆiꢅg idlꢂ
mꢄdꢂ aꢅd ꢃꢁaꢆꢁup.
•ꢀ 9 x 9 mm 64-Piꢅ QFn (LP9e) Packagꢂ
•ꢀ Dual Chaꢅꢅꢂl
0
thꢂ HMCAD1040-40 haꢃ a highly liꢅꢂaꢆ tHA ꢄpꢁimi-
zꢂd fꢄꢆ fꢆꢂquꢂꢅciꢂꢃ up ꢁꢄ nyquiꢃꢁ. thꢂ diffꢂꢆꢂꢅꢁial
clꢄck iꢅꢁꢂꢆfacꢂ iꢃ ꢄpꢁimizꢂd fꢄꢆ lꢄw jiꢁꢁꢂꢆ clꢄck ꢃꢄuꢆcꢂꢃ
aꢅd ꢃuppꢄꢆꢁꢃ LvDs, LvPeCL, ꢃiꢅꢂ waꢀꢂ aꢅd CMos
clꢄck iꢅpuꢁꢃ.
typꢃcꢅꢆ appꢆꢃcꢅꢂꢃꢄꢁs
•ꢀ Mꢂdical Imagiꢅg
•ꢀ Pꢄꢆꢁablꢂ tꢂꢃꢁ equipmꢂꢅꢁ
•ꢀ Digiꢁal oꢃcillꢄꢃcꢄpꢂꢃ
•ꢀ IF Cꢄmmuꢅicaꢁiꢄꢅ
Piꢅ cꢄmpaꢁiblꢂ wiꢁh HMCAD1040-80, HMCAD1050-40
aꢅd HMCAD1050-80.
Fꢀꢁcꢂꢃꢄꢁꢅꢆ Dꢃꢅgꢇꢅm
Figure 1.Functional Block Diagram
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 1
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
eꢆꢈcꢂꢇꢃcꢅꢆ Spꢈcꢃficꢅꢂꢃꢄꢁs
DC eꢆꢈcꢂꢇꢃcꢅꢆ Spꢈcꢃficꢅꢂꢃꢄꢁs
AvDD= 1.8v, DvDD= 1.8v, DvDDCK= 1.8v, ovDD= 2.5v, 20/40 MsPs clꢄck, 50% clꢄck duꢁy cyclꢂ, -1 dBFs 8 MHz iꢅpuꢁ ꢃigꢅal, uꢅlꢂꢃꢃ ꢄꢁhꢂꢆwiꢃꢂ
ꢅꢄꢁꢂd
Paꢆamꢂꢁꢂꢆ
DC Accuracy
Cꢄꢅdiꢁiꢄꢅ
Miꢅ.
typ.
Max.
Uꢅiꢁꢃ
nꢄ miꢃꢃiꢅg cꢄdꢂꢃ
offꢃꢂꢁ ꢂꢆꢆꢄꢆ
Guaꢆaꢅꢁꢂꢂd
1
Mid-ꢃcalꢂ ꢄffꢃꢂꢁ
LsB
Gaiꢅ ꢂꢆꢆꢄꢆ
Full ꢃcalꢂ ꢆaꢅgꢂ dꢂꢀiaꢁiꢄꢅ fꢆꢄm ꢁypical
6
%Fs
Gaiꢅ maꢁchiꢅg bꢂꢁwꢂꢂꢅ chaꢅꢅꢂlꢃ. 3 ꢃigma ꢀaluꢂ
aꢁ wꢄꢆꢃꢁ caꢃꢂ cꢄꢅdiꢁiꢄꢅꢃ
Gaiꢅ maꢁchiꢅg
0.5
%Fs
DnL
Diffꢂꢆꢂꢅꢁial ꢅꢄꢅliꢅꢂaꢆiꢁy
Iꢅꢁꢂgꢆal ꢅꢄꢅliꢅꢂaꢆiꢁy
0.15
0.2
LsB
LsB
v
InL
0
vCM
Cꢄmmꢄꢅ mꢄdꢂ ꢀꢄlꢁagꢂ ꢄuꢁpuꢁ
vAvDD/2
Aꢅalꢄg Iꢅpuꢁ
Iꢅpuꢁ cꢄmmꢄꢅ mꢄdꢂ
Full ꢃcalꢂ ꢆaꢅgꢂ
Iꢅpuꢁ capaciꢁaꢅcꢂ
Baꢅdwidꢁh
Aꢅalꢄg iꢅpuꢁ cꢄmmꢄꢅ mꢄdꢂ ꢀꢄlꢁagꢂ
Diffꢂꢆꢂꢅꢁial iꢅpuꢁ ꢀꢄlꢁagꢂ ꢆaꢅgꢂ
Diffꢂꢆꢂꢅꢁial iꢅpuꢁ capaciꢁaꢅcꢂ
Iꢅpuꢁ Baꢅdwidꢁh
vCM -0.1
500
vCM +0.2
v
2.0
2
vpp
pF
MHz
Power Supply
supply ꢀꢄlꢁagꢂ ꢁꢄ all 1.8v dꢄmaiꢅ piꢅꢃ. sꢂꢂ Piꢅ
Cꢄꢅfiguꢆaꢁiꢄꢅ aꢅd Dꢂꢃcꢆipꢁiꢄꢅ
Cꢄꢆꢂ supply vꢄlꢁagꢂ
I/o supply vꢄlꢁagꢂ
1.7
1.7
1.8
2.5
2.0
3.6
v
v
ouꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply ꢀꢄlꢁagꢂ (ovDD). shꢄuld
bꢂ highꢂꢆ ꢁhaꢅ ꢄꢆ ꢂqual ꢁꢄ Cꢄꢆꢂ supply vꢄlꢁagꢂ
(vovDD ≥ vDvDD)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 2
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
aC eꢆꢈcꢂꢇꢃcꢅꢆ Spꢈcꢃficꢅꢂꢃꢄꢁs - 20 MSPS
AvDD= 1.8v, DvDD= 1.8v, DvDDCK= 1.8v, ovDD= 2.5v, Fs= 20 MsPs clꢄck, 50% clꢄck duꢁy cyclꢂ, -1 dBFs 8 MHz iꢅpuꢁ ꢃigꢅal, uꢅlꢂꢃꢃ ꢄꢁhꢂꢆ-
wiꢃꢂ ꢅꢄꢁꢂd.
Paꢆamꢂꢁꢂꢆ
Performance
Cꢄꢅdiꢁiꢄꢅ
Miꢅ.
typ.
Max.
Uꢅiꢁꢃ
snr
sigꢅal ꢁꢄ nꢄiꢃꢂ raꢁiꢄ
FIn = 2 MHz
61.7
61.6
61.6
61.6
dBFs
dBFs
dBFs
dBFs
FIn = 8 MHz
60
FIn =~ Fs/2
FIn = 20 MHz
snDr
sFDr
HD2
sigꢅal ꢁꢄ nꢄiꢃꢂ aꢅd Diꢃꢁꢄꢆꢁiꢄꢅ raꢁiꢄ
FIn = 2 MHz
61.7
61.6
60.5
61.6
dBFs
dBFs
dBFs
dBFs
FIn = 8 MHz
60
70
FIn =~ Fs/2
FIn = 20 MHz
spuꢆiꢄuꢃ Fꢆꢂꢂ Dyꢅamic raꢅgꢂ
FIn = 2 MHz
0
80
81
70
80
dBc
dBc
dBc
dBc
FIn = 8 MHz
FIn =~ Fs/2
FIn = 20 MHz
sꢂcꢄꢅd ꢄꢆdꢂꢆ Haꢆmꢄꢅic Diꢃꢁꢄꢆꢁiꢄꢅ
FIn = 2 MHz
-90
-90
-90
-90
dBc
dBc
dBc
dBc
FIn = 8 MHz
-80
FIn =~ Fs/2
FIn = 20 MHz
HD3
thiꢆd ꢄꢆdꢂꢆ Haꢆmꢄꢅic Diꢃꢁꢄꢆꢁiꢄꢅ
FIn = 2 MHz
FIn = 8 MHz
-80
-81
-70
-80
dBc
dBc
dBc
dBc
-70
9.7
FIn =~ Fs/2
FIn = 20 MHz
effꢂcꢁiꢀꢂ ꢅumbꢂꢆ ꢄf Biꢁꢃ
FIn = 2 MHz
enoB
10.0
9.9
9.8
9.9
biꢁꢃ
biꢁꢃ
biꢁꢃ
biꢁꢃ
FIn = 8 MHz
FIn =~ Fs/2
FIn = 20 MHz
sigꢅal cꢆꢄꢃꢃꢁalk bꢂꢁwꢂꢂꢅ chaꢅꢅꢂlꢃ,
FIn1=8MHz, FIn0=9.9MHz
Cꢆꢄꢃꢃꢁalk
-105
dB
Power Supply
Aꢅalꢄg ꢃupply cuꢆꢆꢂꢅꢁ
Digiꢁal ꢃupply cuꢆꢆꢂꢅꢁ
8.2
1.7
mA
mA
Digiꢁal cꢄꢆꢂ ꢃupply
2.5v ꢄuꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply, ꢃiꢅꢂ waꢀꢂ iꢅpuꢁ,
FIn = 1 MHz, CK_eXt ꢂꢅablꢂd
ouꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply
2.8
mA
2.5v ꢄuꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply, ꢃiꢅꢂ waꢀꢂ iꢅpuꢁ,
FIn = 1 MHz, CK_eXt diꢃablꢂd
ouꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply
2.3
14.8
8.8
mA
mW
mW
Aꢅalꢄg pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ
Digiꢁal pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ
ovDD = 2.5v, 5pF lꢄad ꢄꢅ ꢄuꢁpuꢁ biꢁꢃ,
FIn = 1 MHz, CK_eXt diꢃablꢂd
ovDD = 2.5v, 5pF lꢄad ꢄꢅ ꢄuꢁpuꢁ biꢁꢃ,
FIn = 1 MHz, CK_eXt diꢃablꢂd
tꢄꢁal pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ
23.6
mW
Pꢄwꢂꢆ Dꢄwꢅ Diꢃꢃipaꢁiꢄꢅ
slꢂꢂp Mꢄdꢂ 1
9.9
15.2
7.7
mW
mW
mW
Pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ, slꢂꢂp mꢄdꢂ ꢄꢅꢂ chaꢅꢅꢂl
Pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ, slꢂꢂp mꢄdꢂ bꢄꢁh chaꢅꢅꢂlꢃ
slꢂꢂp Mꢄdꢂ 2
Clock Inputs
Max. Cꢄꢅꢀꢂꢆꢃiꢄꢅ raꢁꢂ
Miꢅ. Cꢄꢅꢀꢂꢆꢃiꢄꢅ raꢁꢂ
20
MsPs
MsPs
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 3
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
aC eꢆꢈcꢂꢇꢃcꢅꢆ Spꢈcꢃficꢅꢂꢃꢄꢁs - 40 MSPS
AvDD= 1.8v, DvDD= 1.8v, DvDDCK= 1.8v, ovDD= 2.5v, Fs= 40 MsPs clꢄck, 50% clꢄck duꢁy cyclꢂ, -1 dBFs 8 MHz iꢅpuꢁ ꢃigꢅal, uꢅlꢂꢃꢃ ꢄꢁhꢂꢆ-
wiꢃꢂ ꢅꢄꢁꢂd.
Paꢆamꢂꢁꢂꢆ
Performance
Cꢄꢅdiꢁiꢄꢅ
Miꢅ.
typ.
Max.
Uꢅiꢁꢃ
snr
sigꢅal ꢁꢄ nꢄiꢃꢂ raꢁiꢄ
FIn = 2 MHz
61.6
61.6
61.6
61.6
dBFs
dBFs
dBFs
dBFs
FIn = 8 MHz
60
FIn =~ Fs/2
FIn = 30 MHz
snDr
sFDr
HD2
sigꢅal ꢁꢄ nꢄiꢃꢂ aꢅd Diꢃꢁꢄꢆꢁiꢄꢅ raꢁiꢄ
FIn = 2 MHz
61.6
61.6
61.2
61.4
dBFs
dBFs
dBFs
dBFs
FIn = 8 MHz
60
70
FIn =~ Fs/2
FIn = 30 MHz
spuꢆiꢄuꢃ Fꢆꢂꢂ Dyꢅamic raꢅgꢂ
FIn = 2 MHz
0
80
81
72
80
dBc
dBc
dBc
dBc
FIn = 8 MHz
FIn =~ Fs/2
FIn = 30 MHz
sꢂcꢄꢅd ꢄꢆdꢂꢆ Haꢆmꢄꢅic Diꢃꢁꢄꢆꢁiꢄꢅ
FIn = 2 MHz
-90
-90
-85
-85
dBc
dBc
dBc
dBc
FIn = 8 MHz
-80
FIn =~ Fs/2
FIn = 30 MHz
HD3
thiꢆd ꢄꢆdꢂꢆ Haꢆmꢄꢅic Diꢃꢁꢄꢆꢁiꢄꢅ
FIn = 2 MHz
FIn = 8 MHz
-80
-81
-72
-80
dBc
dBc
dBc
dBc
-70
9.7
FIn =~ Fs/2
FIn = 30 MHz
enoB
effꢂcꢁiꢀꢂ ꢅumbꢂꢆ ꢄf Biꢁꢃ
FIn = 2 MHz
9.9
9.9
9.8
9.9
biꢁꢃ
biꢁꢃ
biꢁꢃ
biꢁꢃ
FIn = 8 MHz
FIn =~ Fs/2
FIn = 30 MHz
sigꢅal cꢆꢄꢃꢃꢁalk bꢂꢁwꢂꢂꢅ chaꢅꢅꢂlꢃ,
Cꢆꢄꢃꢃꢁalk
-100
dB
F
= 8 MHz, F
= 9.9 MHz
In0
In1
Power Supply
Aꢅalꢄg ꢃupply cuꢆꢆꢂꢅꢁ
Digiꢁal ꢃupply cuꢆꢆꢂꢅꢁ
14.4
3.4
mA
mA
Digiꢁal cꢄꢆꢂ ꢃupply
2.5v ꢄuꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply, ꢃiꢅꢂ waꢀꢂ iꢅpuꢁ,
FIn = 1 MHz, CK_eXt ꢂꢅablꢂd
ouꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply
5.1
mA
2.5v ꢄuꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply, ꢃiꢅꢂ waꢀꢂ iꢅpuꢁ,
FIn = 1 MHz, CK_eXt diꢃablꢂd
ouꢁpuꢁ dꢆiꢀꢂꢆ ꢃupply
4.2
25.9
16.6
mA
mW
mW
Aꢅalꢄg pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ
Digiꢁal pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ
ovDD = 2.5v, 5pF lꢄad ꢄꢅ ꢄuꢁpuꢁ biꢁꢃ,
FIn = 1 MHz, CK_eXt diꢃablꢂd
ovDD = 2.5v, 5pF lꢄad ꢄꢅ ꢄuꢁpuꢁ biꢁꢃ,
FIn = 1 MHz, CK_eXt diꢃablꢂd
tꢄꢁal pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ
42.5
mW
Pꢄwꢂꢆ Dꢄwꢅ Diꢃꢃipaꢁiꢄꢅ
slꢂꢂp Mꢄdꢂ 1
9.7
25.7
11.3
mW
mW
mW
Pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ, slꢂꢂp mꢄdꢂ ꢄꢅꢂ chaꢅꢅꢂl
Pꢄwꢂꢆ Diꢃꢃipaꢁiꢄꢅ, slꢂꢂp mꢄdꢂ bꢄꢁh chaꢅꢅꢂlꢃ
slꢂꢂp Mꢄdꢂ 2
Clock Inputs
Max. Cꢄꢅꢀꢂꢆꢃiꢄꢅ raꢁꢂ
Miꢅ. Cꢄꢅꢀꢂꢆꢃiꢄꢅ raꢁꢂ
40
MsPs
MsPs
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 4
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
Dꢃgꢃꢂꢅꢆ & tꢃmꢃꢁg Spꢈcꢃficꢅꢂꢃꢄꢁs
AvDD= 1.8v, DvDD= 1.8v, DvDDCK= 1.8v, ovDD= 2.5v, Cꢄꢅꢀꢂꢆꢃiꢄꢅ raꢁꢂ: Max ꢃpꢂcifiꢂd, 50% clꢄck duꢁy cyclꢂ, -1dBFs iꢅpuꢁ ꢃigꢅal,
5 pF capaciꢁiꢀꢂ lꢄad ꢄꢅ daꢁa ꢄuꢁpuꢁꢃ, uꢅlꢂꢃꢃ ꢄꢁhꢂꢆwiꢃꢂ ꢅꢄꢁꢂd
Parameter
Clock Inputs
Condition
Min
Typ
Max
Unit
Duꢁy Cyclꢂ
Cꢄmpliaꢅcꢂ
Iꢅpuꢁ ꢆaꢅgꢂ
Iꢅpuꢁ ꢆaꢅgꢂ
20
80
% high
CMos, LvDs, LvPeCL, siꢅꢂ Waꢀꢂ
Diffꢂꢆꢂꢅꢁial iꢅpuꢁ ꢃwiꢅg
0.4
1.6
vpp
vpp
Diffꢂꢆꢂꢅꢁial iꢅpuꢁ ꢃwiꢅg, ꢃiꢅꢂ waꢀꢂ clꢄck iꢅpuꢁ
Iꢅpuꢁ cꢄmmꢄꢅ
mꢄdꢂ ꢀꢄlꢁagꢂ
Kꢂꢂp ꢀꢄlꢁagꢂꢃ wiꢁhiꢅ gꢆꢄuꢅd aꢅd ꢀꢄlꢁagꢂ ꢄf ovDD
Diffꢂꢆꢂꢅꢁial
0.3
vovDD -0.3
v
Iꢅpuꢁ capaciꢁaꢅcꢂ
2
pF
Timing
0
tPD
sꢁaꢆꢁ up ꢁimꢂ fꢆꢄm Pꢄwꢂꢆ Dꢄwꢅ Mꢄdꢂ ꢁꢄ Acꢁiꢀꢂ Mꢄdꢂ
sꢁaꢆꢁ up ꢁimꢂ fꢆꢄm slꢂꢂp Mꢄdꢂ ꢁꢄ Acꢁiꢀꢂ Mꢄdꢂ
ouꢁ ꢄf ꢆaꢅgꢂ ꢆꢂcꢄꢀꢂꢆy ꢁimꢂ
900
20
clꢄck cyclꢂꢃ
tsLP
clꢄck cyclꢂꢃ
tovr
1
0.8
< 0.5
12
clꢄck cyclꢂꢃ
tAP
Apꢂꢆꢁuꢆꢂ Dꢂlay
ꢅꢃ
Єꢆmꢃ
Apꢂꢆꢁuꢆꢂ jiꢁꢁꢂꢆ
pꢃ
tLAt
Pipꢂliꢅꢂ Dꢂlay
clꢄck cyclꢂꢃ
tD
ouꢁpuꢁ dꢂlay (ꢃꢂꢂ ꢁimiꢅg diagꢆam). 5pF lꢄad ꢄꢅ ꢄuꢁpuꢁ biꢁꢃ
ouꢁpuꢁ dꢂlay ꢆꢂlaꢁiꢀꢂ ꢁꢄ CK_eXt (ꢃꢂꢂ ꢁimiꢅg diagꢆam)
3
1
10
6
ꢅꢃ
ꢅꢃ
tDC
Logic Inputs
vHI
High Lꢂꢀꢂl Iꢅpuꢁ vꢄlꢁagꢂ. vovDD ≥ 3.0v
High Lꢂꢀꢂl Iꢅpuꢁ vꢄlꢁagꢂ. vovDD = 1.7v – 3.0v
Lꢄw Lꢂꢀꢂl Iꢅpuꢁ vꢄlꢁagꢂ. vovDD ≥ 3.0v
Lꢄw Lꢂꢀꢂl Iꢅpuꢁ vꢄlꢁagꢂ. vovDD = 1.7v – 3.0v
High Lꢂꢀꢂl Iꢅpuꢁ lꢂakagꢂ Cuꢆꢆꢂꢅꢁ
Lꢄw Lꢂꢀꢂl Iꢅpuꢁ lꢂakagꢂ Cuꢆꢆꢂꢅꢁ
2
v
v
vHI
0.8 ·vovDD
vLI
0
0
0.8
0.2 ·vovDD
10
v
vLI
v
IHI
µA
µA
pF
ILI
10
CI
Iꢅpuꢁ Capaciꢁaꢅcꢂ
3
Logic Outputs
vHo
vLo
High Lꢂꢀꢂl ouꢁpuꢁ vꢄlꢁagꢂ
Lꢄw Lꢂꢀꢂl ouꢁpuꢁ vꢄlꢁagꢂ
vovDD -0.1
v
v
0.1
5
Max capaciꢁiꢀꢂ lꢄad. Pꢄꢃꢁ-dꢆiꢀꢂꢆ ꢃupply ꢀꢄlꢁagꢂ ꢂqual ꢁꢄ
pꢆꢂ-dꢆiꢀꢂꢆ ꢃupply ꢀꢄlꢁagꢂ vovDD = voCvDD
CL
CL
pF
pF
Max capaciꢁiꢀꢂ lꢄad. Pꢄꢃꢁ-dꢆiꢀꢂꢆ ꢃupply ꢀꢄlꢁagꢂ abꢄꢀꢂ 2.25v [1]
10
[1] thꢂ ꢄuꢁpuꢁꢃ will bꢂ fuꢅcꢁiꢄꢅal wiꢁh highꢂꢆ lꢄadꢃ. Hꢄwꢂꢀꢂꢆ, iꢁ iꢃ ꢆꢂcꢄmmꢂꢅdꢂd ꢁꢄ kꢂꢂp ꢁhꢂ lꢄad ꢄꢅ ꢄuꢁpuꢁ daꢁa biꢁꢃ aꢃ lꢄw aꢃ pꢄꢃꢃiblꢂ ꢁꢄ kꢂꢂp
dyꢅamic cuꢆꢆꢂꢅꢁꢃ aꢅd ꢆꢂꢃulꢁiꢅg ꢃwiꢁchiꢅg ꢅꢄiꢃꢂ aꢁ a miꢅimum
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 5
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
tꢃmꢃꢁg Dꢃꢅgꢇꢅm
0
Figure 2.Timing Diagram
tꢅbꢆꢈ 1. absꢄꢆꢀꢂꢈ Mꢅxꢃmꢀm rꢅꢂꢃꢁgs
Piꢅ
Piꢅ
Avss
Dvss
Dvss
ovss
Avss
ovss
DvssCK
ovss
Piꢅ
eLeCtrostAtIC sensItIve DevICe
oBserve HAnDLInG PreCAUtIons
AvDD
-0.3v ꢁꢄ +2.3v
-0.3v ꢁꢄ +2.3v
-0.3v ꢁꢄ +0.3v
-0.3v ꢁꢄ +3.9v
-0.3v ꢁꢄ +2.3v
-0.3v ꢁꢄ +3.9v
-0.3v ꢁꢄ +3.9v
-0.3v ꢁꢄ +3.9v
-40 ꢁꢄ +85 ºC
-60 ꢁꢄ +150 ºC
J-stD-020
DvDD
Avss, DvssCK, Dvss, ovss
ovDD
sꢁꢆꢂꢃꢃꢂꢃ abꢄꢀꢂ ꢁhꢄꢃꢂ liꢃꢁꢂd uꢅdꢂꢆ Abꢃꢄluꢁꢂ Maximum
raꢁiꢅgꢃ may cauꢃꢂ pꢂꢆmaꢅꢂꢅꢁ damagꢂ ꢁꢄ ꢁhꢂ dꢂꢀicꢂ. thiꢃ
iꢃ a ꢃꢁꢆꢂꢃꢃ ꢆaꢁiꢅg ꢄꢅly; fuꢅcꢁiꢄꢅal ꢄpꢂꢆaꢁiꢄꢅ ꢄf ꢁhꢂ dꢂꢀicꢂ
aꢁ ꢁhꢂꢃꢂ ꢄꢆ aꢅy ꢄꢁhꢂꢆ cꢄꢅdiꢁiꢄꢅꢃ abꢄꢀꢂ ꢁhꢄꢃꢂ iꢅdicaꢁꢂd iꢅ
ꢁhꢂ ꢄpꢂꢆaꢁiꢄꢅal ꢃꢂcꢁiꢄꢅ ꢄf ꢁhiꢃ ꢃpꢂcificaꢁiꢄꢅ iꢃ ꢅꢄꢁ impliꢂd.
expꢄꢃuꢆꢂ ꢁꢄ abꢃꢄluꢁꢂ maximum ꢆaꢁiꢅg cꢄꢅdiꢁiꢄꢅꢃ fꢄꢆ
ꢂxꢁꢂꢅdꢂd pꢂꢆiꢄdꢃ may affꢂcꢁ dꢂꢀicꢂ ꢆꢂliabiliꢁy.
IPx, Inx, aꢅalꢄg iꢅpuꢁꢃ aꢅd ꢄuꢁpuꢁꢃ
Digiꢁal ꢄuꢁpuꢁꢃ
CKP, CKn
Digiꢁal Iꢅpuꢁꢃ
opꢂꢆaꢁiꢅg ꢁꢂmpꢂꢆaꢁuꢆꢂ
sꢁꢄꢆagꢂ ꢁꢂmpꢂꢆaꢁuꢆꢂ
sꢄldꢂꢆiꢅg Pꢆꢄfilꢂ Qualificaꢁiꢄꢅ
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 6
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
Pꢃꢁ Cꢄꢁfigꢀꢇꢅꢂꢃꢄꢁ ꢅꢁd Dꢈscꢇꢃpꢂꢃꢄꢁ
0
Figure 3.Package Drawing, QFN 64-Pin
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 7
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
tꢅbꢆꢈ 2. Pꢃꢁ Dꢈscꢇꢃpꢂꢃꢄꢁs
Piꢅ numbꢂꢆ
1, 18, 23
2
Fuꢅcꢁiꢄꢅ
Dꢂꢃcꢆipꢁiꢄꢅ
DvDD
CM_eXt
AvDD
Digiꢁal aꢅd I/o-ꢆiꢅg pꢆꢂ dꢆiꢀꢂꢆ ꢃupply ꢀꢄlꢁagꢂ, 1.8v
Cꢄmmꢄꢅ Mꢄdꢂ ꢀꢄlꢁagꢂ ꢄuꢁpuꢁ
Aꢅalꢄg ꢃupply ꢀꢄlꢁagꢂ, 1.8v
3, 9, 12
4, 5, 8
6, 7
Avss
Aꢅalꢄg gꢆꢄuꢅd
IP0, In0
IP1, In1
DvssCK
DvDDCK
CKP
Aꢅalꢄg iꢅpuꢁ Chaꢅꢅꢂl 0 (ꢅꢄꢅ-iꢅꢀꢂꢆꢁiꢅg, iꢅꢀꢂꢆꢁiꢅg)
Aꢅalꢄg iꢅpuꢁ Chaꢅꢅꢂl 1 (ꢅꢄꢅ-iꢅꢀꢂꢆꢁiꢅg, iꢅꢀꢂꢆꢁiꢅg)
Clꢄck ciꢆcuiꢁꢆy gꢆꢄuꢅd
10, 11
13
14
Clꢄck ciꢆcuiꢁꢆy ꢃupply ꢀꢄlꢁagꢂ, 1.8v
15
Clꢄck iꢅpuꢁ, ꢅꢄꢅ-iꢅꢀꢂꢆꢁiꢅg (Fꢄꢆmaꢁ: LvDs, LvPeCL, CMos/ttL, siꢅꢂ Waꢀꢂ)
Clꢄck iꢅpuꢁ, iꢅꢀꢂꢆꢁiꢅg. Fꢄꢆ CMos iꢅpuꢁ ꢄꢅ CKP, cꢄꢅꢅꢂcꢁ CKn ꢁꢄ gꢆꢄuꢅd.
Digiꢁal ciꢆcuiꢁꢆy gꢆꢄuꢅd
16
CKn
17, 64
Dvss
0
19
20
CK_eXt_en
DFrMt
CK_eXt ꢃigꢅal ꢂꢅablꢂd whꢂꢅ lꢄw (zꢂꢆꢄ). tꢆiꢃꢁaꢁꢂ whꢂꢅ high.
Daꢁa fꢄꢆmaꢁ ꢃꢂlꢂcꢁiꢄꢅ. 0: offꢃꢂꢁ Biꢅaꢆy, 1: twꢄ'ꢃ Cꢄmplꢂmꢂꢅꢁ
Full chip Pꢄwꢂꢆ Dꢄwꢅ mꢄdꢂ whꢂꢅ Lꢄw. All digiꢁal ꢄuꢁpuꢁꢃ ꢆꢂꢃꢂꢁ ꢁꢄ zꢂꢆꢄ.
After chip power up always apply Power Down mode before using Active
Mode to reset chip.
21
PD_n
22
24, 41, 58
25, 40, 57
26
oe_n_1
ovDD
ovss
nC
ouꢁpuꢁ eꢅablꢂ Chaꢅꢅꢂl 0. tꢆiꢃꢁaꢁꢂ whꢂꢅ high
I/o ꢆiꢅg pꢄꢃꢁ-dꢆiꢀꢂꢆ ꢃupply ꢀꢄlꢁagꢂ. vꢄlꢁagꢂ ꢆaꢅgꢂ 1.7 ꢁꢄ 3.6v
Gꢆꢄuꢅd fꢄꢆ I/o ꢆiꢅg
27
nC
28
nC
29
D1_0
D1_1
D1_2
D1_3
D1_4
D1_5
D1_6
D1_7
D1_8
D1_9
ornG_1
CK_eXt
nC
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1 (LsB)
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
30
31
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
32
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
33
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
34
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
35
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
36
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
37
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1
38
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 1 (MsB)
ouꢁ ꢄf raꢅgꢂ flag Chaꢅꢅꢂl 1. High whꢂꢅ iꢅpuꢁ ꢃigꢅal iꢃ ꢄuꢁ ꢄf ꢆaꢅgꢂ
ouꢁpuꢁ clꢄck ꢃigꢅal fꢄꢆ daꢁa ꢃyꢅchꢆꢄꢅizaꢁiꢄꢅ. CMos lꢂꢀꢂlꢃ
39
42
43
44
nC
45
nC
46
D0_0
D0_1
D0_2
D0_3
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0 (LsB)
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
47
48
49
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 8
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
tꢅbꢆꢈ 2. Pꢃꢁ Dꢈscꢇꢃpꢂꢃꢄꢁs
Piꢅ numbꢂꢆ
Fuꢅcꢁiꢄꢅ
Dꢂꢃcꢆipꢁiꢄꢅ
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
50
51
52
53
54
55
56
59
D0_4
D0_5
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
D0_6
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
D0_7
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
D0_8
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0
D0_9
ouꢁpuꢁ Daꢁa Chaꢅꢅꢂl 0 (MsB)
ouꢁ ꢄf raꢅgꢂ flag Chaꢅꢅꢂl 0. High whꢂꢅ iꢅpuꢁ ꢃigꢅal iꢃ ꢄuꢁ ꢄf ꢆaꢅgꢂ
ornG_0
oe_n_0
ouꢁpuꢁ eꢅablꢂ Chaꢅꢅꢂl 0. tꢆiꢃꢁaꢁꢂ whꢂꢅ high
Biaꢃ cꢄꢅꢁꢆꢄl biꢁꢃ fꢄꢆ ꢁhꢂ buffꢂꢆ dꢆiꢀiꢅg piꢅ CM_eXt
CM_eXtBC_1, CM_
eXtBC_0
60, 61
62, 63
00: oFF
01: 50uA
11: 1mA
10: 500uA
0
slꢂꢂp Mꢄdꢂ
sLP_n_1, sLP_n_0
00: slꢂꢂp Mꢄdꢂ
01: Chaꢅꢅꢂl 0 acꢁiꢀꢂ
10: Chaꢅꢅꢂl 1 acꢁiꢀꢂ
11: Bꢄꢁh chaꢅꢅꢂlꢃ acꢁiꢀꢂ
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 9
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
Pꢆꢂfꢂꢆably, ꢁhꢂ CM_eXt ꢄuꢁpuꢁ ꢃhꢄuld bꢂ uꢃꢂd aꢃ
ꢆꢂfꢂꢆꢂꢅcꢂ ꢁꢄ ꢃꢂꢁ ꢁhꢂ cꢄmmꢄꢅ mꢄdꢂ ꢀꢄlꢁagꢂ.
rꢈcꢄmmꢈꢁdꢈd usꢅgꢈ
Analog Input
thꢂ iꢅpuꢁ amplifiꢂꢆ cꢄuld bꢂ iꢅꢃidꢂ a cꢄmpaꢅiꢄꢅ chip
ꢄꢆ iꢁ cꢄuld bꢂ a dꢂdicaꢁꢂd amplifiꢂꢆ. sꢂꢀꢂꢆal ꢃuiꢁablꢂ
ꢃiꢅglꢂ ꢂꢅdꢂd ꢁꢄ diffꢂꢆꢂꢅꢁial dꢆiꢀꢂꢆ amplifiꢂꢆꢃ ꢂxiꢃꢁ iꢅ ꢁhꢂ
maꢆkꢂꢁ. thꢂ ꢃyꢃꢁꢂm dꢂꢃigꢅꢂꢆ ꢃhꢄuld makꢂ ꢃuꢆꢂ ꢁhꢂ
ꢃpꢂcificaꢁiꢄꢅꢃ ꢄf ꢁhꢂ ꢃꢂlꢂcꢁꢂd amplifiꢂꢆ iꢃ adꢂquaꢁꢂ fꢄꢆ
ꢁhꢂ ꢁꢄꢁal ꢃyꢃꢁꢂm, aꢅd ꢁhaꢁ dꢆiꢀiꢅg capabiliꢁiꢂꢃ cꢄmply
wiꢁh ꢁhꢂ HMCAD1040-40 iꢅpuꢁ ꢃpꢂcificaꢁiꢄꢅꢃ.
thꢂ aꢅalꢄg iꢅpuꢁ ꢁꢄ ꢁhꢂ HMCAD1040-40 iꢃ a ꢃwiꢁchꢂd
capaciꢁꢄꢆ ꢁꢆack-aꢅd-hꢄld amplifiꢂꢆ ꢄpꢁimizꢂd fꢄꢆ
diffꢂꢆꢂꢅꢁial ꢄpꢂꢆaꢁiꢄꢅ. opꢂꢆaꢁiꢄꢅ aꢁ cꢄmmꢄꢅ mꢄdꢂ
ꢀꢄlꢁagꢂꢃ aꢁ mid ꢃupply iꢃ ꢆꢂcꢄmmꢂꢅdꢂd ꢂꢀꢂꢅ if
pꢂꢆfꢄꢆmaꢅcꢂ will bꢂ gꢄꢄd fꢄꢆ ꢁhꢂ ꢆaꢅgꢂꢃ ꢃpꢂcifiꢂd. thꢂ
CM_eXt piꢅ pꢆꢄꢀidꢂꢃ a ꢀꢄlꢁagꢂ ꢃuiꢁablꢂ aꢃ cꢄmmꢄꢅ
mꢄdꢂ ꢀꢄlꢁagꢂ ꢆꢂfꢂꢆꢂꢅcꢂ. thꢂ iꢅꢁꢂꢆꢅal buffꢂꢆ fꢄꢆ ꢁhꢂ
CM_eXt ꢀꢄlꢁagꢂ caꢅ bꢂ ꢃwiꢁchꢂd ꢄff, aꢅd dꢆiꢀiꢅg
capabiliꢁiꢂꢃ caꢅ bꢂ chaꢅgꢂd by uꢃiꢅg ꢁhꢂ CM_eXtBC
cꢄꢅꢁꢆꢄl iꢅpuꢁ.
Dꢂꢁailꢂd cꢄꢅfiguꢆaꢁiꢄꢅ aꢅd uꢃagꢂ iꢅꢃꢁꢆucꢁiꢄꢅꢃ ꢃhꢄuld
bꢂ fꢄuꢅd iꢅ ꢁhꢂ dꢄcumꢂꢅꢁaꢁiꢄꢅ ꢄf ꢁhꢂ ꢃꢂlꢂcꢁꢂd dꢆiꢀꢂꢆ,
aꢅd ꢁhꢂ ꢀaluꢂꢃ giꢀꢂꢅ iꢅ figuꢆꢂ 5 muꢃꢁ bꢂ ꢀaꢆiꢂd
accꢄꢆdiꢅg ꢁꢄ ꢁhꢂ ꢆꢂcꢄmmꢂꢅdaꢁiꢄꢅꢃ fꢄꢆ ꢁhꢂ dꢆiꢀꢂꢆ.
Figuꢆꢂ 4 ꢃhꢄwꢃ a ꢃimplifiꢂd dꢆawiꢅg ꢄf ꢁhꢂ iꢅpuꢁ
ꢅꢂꢁwꢄꢆk. thꢂ ꢃigꢅal ꢃꢄuꢆcꢂ muꢃꢁ haꢀꢂ ꢃufficiꢂꢅꢁly lꢄw
ꢄuꢁpuꢁ impꢂdaꢅcꢂ ꢁꢄ chaꢆgꢂ ꢁhꢂ ꢃampliꢅg capaciꢁꢄꢆꢃ
wiꢁhiꢅ ꢄꢅꢂ clꢄck cyclꢂ. A ꢃmall ꢂxꢁꢂꢆꢅal ꢆꢂꢃiꢃꢁꢄꢆ
(ꢂ.g. 22 ohm) iꢅ ꢃꢂꢆiꢂꢃ wiꢁh ꢂach iꢅpuꢁ iꢃ ꢆꢂcꢄm-
mꢂꢅdꢂd aꢃ iꢁ hꢂlpꢃ ꢆꢂducꢂ ꢁꢆaꢅꢃiꢂꢅꢁ cuꢆꢆꢂꢅꢁꢃ aꢅd
dampꢂꢅꢃ ꢆiꢅgiꢅg bꢂhaꢀiꢄꢆ. A ꢃmall diffꢂꢆꢂꢅꢁial ꢃhuꢅꢁ
capaciꢁꢄꢆ aꢁ ꢁhꢂ chip ꢃidꢂ ꢄf ꢁhꢂ ꢆꢂꢃiꢃꢁꢄꢆꢃ may bꢂ
uꢃꢂd ꢁꢄ pꢆꢄꢀidꢂ dyꢅamic chaꢆgiꢅg cuꢆꢆꢂꢅꢁꢃ aꢅd may
impꢆꢄꢀꢂ pꢂꢆfꢄꢆmaꢅcꢂ. thꢂ ꢆꢂꢃiꢃꢁꢄꢆꢃ fꢄꢆm a lꢄw paꢃꢃ
filꢁꢂꢆ wiꢁh ꢁhꢂ capaciꢁꢄꢆ, aꢅd ꢀaluꢂꢃ muꢃꢁ ꢁhꢂꢆꢂfꢄꢆꢂ
bꢂ dꢂꢁꢂꢆmiꢅꢂd by ꢆꢂquiꢆꢂmꢂꢅꢁꢃ fꢄꢆ ꢁhꢂ applicaꢁiꢄꢅ.
AC-Coupling
0
A ꢃigꢅal ꢁꢆaꢅꢃfꢄꢆmꢂꢆ ꢄꢆ ꢃꢂꢆiꢂꢃ capaciꢁꢄꢆꢃ caꢅ bꢂ uꢃꢂd
ꢁꢄ makꢂ aꢅ AC-cꢄuplꢂd iꢅpuꢁ ꢅꢂꢁwꢄꢆk. Figuꢆꢂ 6 ꢃhꢄwꢃ
a ꢆꢂcꢄmmꢂꢅdꢂd cꢄꢅfiguꢆaꢁiꢄꢅ uꢃiꢅg a ꢁꢆaꢅꢃfꢄꢆmꢂꢆ.
Makꢂ ꢃuꢆꢂ ꢁhaꢁ a ꢁꢆaꢅꢃfꢄꢆmꢂꢆ wiꢁh ꢃufficiꢂꢅꢁ liꢅꢂaꢆiꢁy
iꢃ ꢃꢂlꢂcꢁꢂd, aꢅd ꢁhaꢁ ꢁhꢂ baꢅdwidꢁh ꢄf ꢁhꢂ ꢁꢆaꢅꢃfꢄꢆmꢂꢆ
iꢃ appꢆꢄpꢆiaꢁꢂ. thꢂ baꢅdwidꢁh ꢃhꢄuld ꢂxcꢂꢂd ꢁhꢂ
ꢃampliꢅg ꢆaꢁꢂ ꢄf ꢁhꢂ ADC wiꢁh aꢁ lꢂaꢃꢁ a facꢁꢄꢆ ꢄf
10. Iꢁ iꢃ alꢃꢄ impꢄꢆꢁaꢅꢁ ꢁꢄ miꢅimizꢂ phaꢃꢂ miꢃmaꢁch
bꢂꢁwꢂꢂꢅ ꢁhꢂ diffꢂꢆꢂꢅꢁial ADC iꢅpuꢁꢃ fꢄꢆ gꢄꢄd HD2
pꢂꢆfꢄꢆmaꢅcꢂ. thiꢃ ꢁypꢂ ꢄf ꢁꢆaꢅꢃfꢄꢆmꢂꢆ cꢄuplꢂd iꢅpuꢁ iꢃ
ꢁhꢂ pꢆꢂfꢂꢆꢆꢂd cꢄꢅfiguꢆaꢁiꢄꢅ fꢄꢆ high fꢆꢂquꢂꢅcy ꢃigꢅalꢃ
aꢃ mꢄꢃꢁ diffꢂꢆꢂꢅꢁial amplifiꢂꢆꢃ dꢄ ꢅꢄꢁ haꢀꢂ adꢂquaꢁꢂ
pꢂꢆfꢄꢆmaꢅcꢂ aꢁ high fꢆꢂquꢂꢅciꢂꢃ. Magꢅꢂꢁic cꢄupliꢅg
bꢂꢁwꢂꢂꢅ ꢁhꢂ ꢁꢆaꢅꢃfꢄꢆmꢂꢆꢃ aꢅd PCB ꢁꢆacꢂꢃ may impacꢁ
chaꢅꢅꢂl cꢆꢄꢃꢃꢁalk, aꢅd muꢃꢁ bꢂ ꢁakꢂꢅ iꢅꢁꢄ accꢄuꢅꢁ
duꢆiꢅg PCB layꢄuꢁ. If ꢁhꢂ iꢅpuꢁ ꢃigꢅal iꢃ ꢁꢆaꢀꢂliꢅg a
lꢄꢅg phyꢃical diꢃꢁaꢅcꢂ fꢆꢄm ꢁhꢂ ꢃigꢅal ꢃꢄuꢆcꢂ ꢁꢄ ꢁhꢂ
ꢁꢆaꢅꢃfꢄꢆmꢂꢆ (fꢄꢆ ꢂxamplꢂ a lꢄꢅg cablꢂ), kick-backꢃ
fꢆꢄm ꢁhꢂ ADC will alꢃꢄ ꢁꢆaꢀꢂl alꢄꢅg ꢁhiꢃ diꢃꢁaꢅcꢂ. If
ꢁhꢂꢃꢂ kick-backꢃ aꢆꢂ ꢅꢄꢁ ꢁꢂꢆmiꢅaꢁꢂd pꢆꢄpꢂꢆly aꢁ ꢁhꢂ
ꢃꢄuꢆcꢂ ꢃidꢂ, ꢁhꢂy aꢆꢂ ꢆꢂflꢂcꢁꢂd aꢅd will add ꢁꢄ ꢁhꢂ
iꢅpuꢁ ꢃigꢅal aꢁ ꢁhꢂ ADC iꢅpuꢁ. thiꢃ cꢄuld ꢆꢂducꢂ ꢁhꢂ
ADC pꢂꢆfꢄꢆmaꢅcꢂ. tꢄ aꢀꢄid ꢁhiꢃ ꢂffꢂcꢁ, ꢁhꢂ ꢃꢄuꢆcꢂ
muꢃꢁ ꢂffꢂcꢁiꢀꢂly ꢁꢂꢆmiꢅaꢁꢂ ꢁhꢂ ADC kick-backꢃ, ꢄꢆ ꢁhꢂ
ꢁꢆaꢀꢂliꢅg diꢃꢁaꢅcꢂ ꢃhꢄuld bꢂ ꢀꢂꢆy ꢃhꢄꢆꢁ. If ꢁhiꢃ pꢆꢄblꢂm
cꢄuld ꢅꢄꢁ bꢂ aꢀꢄidꢂd, ꢁhꢂ ciꢆcuiꢁ iꢅ figuꢆꢂ 8 caꢅ bꢂ
uꢃꢂd.
Figure 4. Input configuration
DC-Coupling
Figure 5. DC coupled input with buffer
Figuꢆꢂ 5 ꢃhꢄwꢃ a ꢆꢂcꢄmmꢂꢅdꢂd cꢄꢅfiguꢆaꢁiꢄꢅ fꢄꢆ DC-
cꢄupliꢅg. nꢄꢁꢂ ꢁhaꢁ ꢁhꢂ cꢄmmꢄꢅ mꢄdꢂ iꢅpuꢁ ꢀꢄlꢁagꢂ
muꢃꢁ bꢂ cꢄꢅꢁꢆꢄllꢂd accꢄꢆdiꢅg ꢁꢄ ꢃpꢂcifiꢂd ꢀaluꢂꢃ.
Figure 6. Transformer coupled input
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0 - 10
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
Figuꢆꢂ
7
ꢃhꢄwꢃ AC-cꢄupliꢅg uꢃiꢅg capaciꢁꢄꢆꢃ.
thꢂ iꢅpuꢁ clꢄck caꢅ bꢂ ꢃuppliꢂd iꢅ a ꢀaꢆiꢂꢁy ꢄf fꢄꢆmaꢁꢃ.
thꢂ clꢄck piꢅꢃ aꢆꢂ AC-cꢄuplꢂd iꢅꢁꢂꢆꢅally. Hꢂꢅcꢂ a widꢂ
cꢄmmꢄꢅ mꢄdꢂ ꢀꢄlꢁagꢂ ꢆaꢅgꢂ iꢃ accꢂpꢁꢂd. Diffꢂꢆꢂꢅꢁial
clꢄck ꢃꢄuꢆcꢂꢃ aꢃ LvDs, LvPeCL ꢄꢆ diffꢂꢆꢂꢅꢁial ꢃiꢅꢂ
waꢀꢂ caꢅ bꢂ cꢄꢅꢅꢂcꢁꢂd diꢆꢂcꢁly ꢁꢄ ꢁhꢂ iꢅpuꢁ piꢅꢃ.
Fꢄꢆ CMos iꢅpuꢁꢃ, ꢁhꢂ CKn piꢅ ꢃhꢄuld bꢂ cꢄꢅꢅꢂcꢁꢂd
ꢁꢄ gꢆꢄuꢅd, aꢅd ꢁhꢂ CMos clꢄck ꢃigꢅal ꢃhꢄuld bꢂ
cꢄꢅꢅꢂcꢁꢂd ꢁꢄ CKP. Fꢄꢆ diffꢂꢆꢂꢅꢁial ꢃiꢅꢂ waꢀꢂ clꢄck, ꢁhꢂ
iꢅpuꢁ ampliꢁudꢂ muꢃꢁ bꢂ aꢁ lꢂaꢃꢁ 800 mvpp.
rꢂꢃiꢃꢁꢄꢆꢃ fꢆꢄm ꢁhꢂ CM_eXt ꢄuꢁpuꢁ, rCM, ꢃhꢄuld bꢂ
uꢃꢂd ꢁꢄ biaꢃ ꢁhꢂ diffꢂꢆꢂꢅꢁial iꢅpuꢁ ꢃigꢅalꢃ ꢁꢄ ꢁhꢂ cꢄꢆꢆꢂcꢁ
ꢀꢄlꢁagꢂ. thꢂ ꢃꢂꢆiꢂꢃ capaciꢁꢄꢆ, CI, fꢄꢆm ꢁhꢂ high-
paꢃꢃ pꢄlꢂ wiꢁh ꢁhꢂꢃꢂ ꢆꢂꢃiꢃꢁꢄꢆꢃ, aꢅd ꢁhꢂ ꢀaluꢂꢃ muꢃꢁ
ꢁhꢂꢆꢂfꢄꢆꢂ bꢂ dꢂꢁꢂꢆmiꢅꢂd baꢃꢂd ꢄꢅ ꢁhꢂ ꢆꢂquiꢆꢂmꢂꢅꢁ ꢁꢄ
ꢁhꢂ high-paꢃꢃ cuꢁ-ꢄff fꢆꢂquꢂꢅcy.
thꢂ qualiꢁy ꢄf ꢁhꢂ iꢅpuꢁ clꢄck iꢃ ꢂxꢁꢆꢂmꢂly impꢄꢆꢁaꢅꢁ fꢄꢆ
high-ꢃpꢂꢂd, high-ꢆꢂꢃꢄluꢁiꢄꢅ ADCꢃ. thꢂ cꢄꢅꢁꢆibuꢁiꢄꢅ ꢁꢄ
snr fꢆꢄm clꢄck jiꢁꢁꢂꢆ wiꢁh a full ꢃcalꢂ ꢃigꢅal aꢁ a giꢀꢂꢅ
fꢆꢂquꢂꢅcy iꢃ ꢃhꢄwꢅ iꢅ ꢂquaꢁiꢄꢅ 1,
0
SNRjitter = 20 · lꢄg (2 · π · ƒ · єt)
(1)
IN
Figure 7. AC coupled input
whꢂꢆꢂ fIn iꢃ ꢁhꢂ ꢃigꢅal fꢆꢂquꢂꢅcy, aꢅd εꢁ iꢃ ꢁhꢂ ꢁꢄꢁal
ꢆmꢃ jiꢁꢁꢂꢆ mꢂaꢃuꢆꢂd iꢅ ꢃꢂcꢄꢅdꢃ. thꢂ ꢆmꢃ jiꢁꢁꢂꢆ iꢃ ꢁhꢂ
ꢁꢄꢁal ꢄf all jiꢁꢁꢂꢆ ꢃꢄuꢆcꢂꢃ iꢅcludiꢅg ꢁhꢂ clꢄck gꢂꢅꢂꢆaꢁiꢄꢅ
ciꢆcuiꢁꢆy, clꢄck diꢃꢁꢆibuꢁiꢄꢅ aꢅd iꢅꢁꢂꢆꢅal ADC ciꢆcuiꢁꢆy.
Fꢄꢆ applicaꢁiꢄꢅꢃ whꢂꢆꢂ jiꢁꢁꢂꢆ may limiꢁ ꢁhꢂ ꢄbꢁaiꢅablꢂ
pꢂꢆfꢄꢆmaꢅcꢂ, iꢁiꢃꢄfuꢁmꢄꢃꢁimpꢄꢆꢁaꢅcꢂꢁꢄlimiꢁꢁhꢂclꢄck
jiꢁꢁꢂꢆ. thiꢃ caꢅ bꢂ ꢄbꢁaiꢅꢂd by uꢃiꢅg pꢆꢂciꢃꢂ aꢅd ꢃꢁablꢂ
clꢄck ꢆꢂfꢂꢆꢂꢅcꢂꢃ (ꢂ.g. cꢆyꢃꢁal ꢄꢃcillaꢁꢄꢆꢃ wiꢁh gꢄꢄd jiꢁꢁꢂꢆ
ꢃpꢂcificaꢁiꢄꢅꢃ) aꢅd makꢂ ꢃuꢆꢂ ꢁhꢂ clꢄck diꢃꢁꢆibuꢁiꢄꢅ
iꢃ wꢂll cꢄꢅꢁꢆꢄllꢂd. Iꢁ mighꢁ bꢂ adꢀaꢅꢁagꢂꢄuꢃ ꢁꢄ uꢃꢂ
aꢅalꢄg pꢄwꢂꢆ aꢅd gꢆꢄuꢅd plaꢅꢂꢃ ꢁꢄ ꢂꢅꢃuꢆꢂ lꢄw ꢅꢄiꢃꢂ
ꢄꢅ ꢁhꢂ ꢃuppliꢂꢃ ꢁꢄ all ciꢆcuiꢁꢆy iꢅ ꢁhꢂ clꢄck diꢃꢁꢆibuꢁiꢄꢅ.
Iꢁ iꢃ ꢄf uꢁmꢄꢃꢁ impꢄꢆꢁaꢅcꢂ ꢁꢄ aꢀꢄid cꢆꢄꢃꢃꢁalk bꢂꢁwꢂꢂꢅ
ꢁhꢂ ADC ꢄuꢁpuꢁ biꢁꢃ aꢅd ꢁhꢂ clꢄck aꢅd bꢂꢁwꢂꢂꢅ ꢁhꢂ
aꢅalꢄg iꢅpuꢁ ꢃigꢅal aꢅd ꢁhꢂ clꢄck ꢃiꢅcꢂ ꢃuch cꢆꢄꢃꢃꢁalk
ꢄfꢁꢂꢅ ꢆꢂꢃulꢁꢃ iꢅ haꢆmꢄꢅic diꢃꢁꢄꢆꢁiꢄꢅ.
Figure 8. Alternative input network
nꢄꢁꢂ ꢁhaꢁ ꢃꢁaꢆꢁup ꢁimꢂ fꢆꢄm slꢂꢂp Mꢄdꢂ aꢅd Pꢄwꢂꢆ
Dꢄwꢅ Mꢄdꢂ will bꢂ affꢂcꢁꢂd by ꢁhiꢃ filꢁꢂꢆ aꢃ ꢁhꢂ ꢁimꢂ
ꢆꢂquiꢆꢂd ꢁꢄ chaꢆgꢂ ꢁhꢂ ꢃꢂꢆiꢂꢃ capaciꢁꢄꢆꢃ iꢃ dꢂpꢂꢅdꢂꢅꢁ
ꢄꢅ ꢁhꢂ filꢁꢂꢆ cuꢁ-ꢄff fꢆꢂquꢂꢅcy.
If ꢁhꢂ iꢅpuꢁ ꢃigꢅal haꢃ a lꢄꢅg ꢁꢆaꢀꢂliꢅg diꢃꢁaꢅcꢂ, aꢅd
ꢁhꢂ kick-backꢃ fꢆꢄm ꢁhꢂ ADC ꢅꢄꢁ aꢆꢂ ꢂffꢂcꢁiꢀꢂly
ꢁꢂꢆmiꢅaꢁꢂd aꢁ ꢁhꢂ ꢃigꢅal ꢃꢄuꢆcꢂ, ꢁhꢂ iꢅpuꢁ ꢅꢂꢁwꢄꢆk ꢄf
figuꢆꢂ 8 caꢅ bꢂ uꢃꢂd. thꢂ cꢄꢅfiguꢆaꢁiꢄꢅ iꢅ figuꢆꢂ 8 iꢃ
dꢂꢃigꢅꢂd ꢁꢄ aꢁꢁꢂꢅuaꢁꢂ ꢁhꢂ kickback fꢆꢄm ꢁhꢂ ADC aꢅd
ꢁꢄ pꢆꢄꢀidꢂ aꢅ iꢅpuꢁ impꢂdaꢅcꢂ ꢁhaꢁ lꢄꢄkꢃ aꢃ ꢆꢂꢃiꢃꢁiꢀꢂ
aꢃ pꢄꢃꢃiblꢂ fꢄꢆ fꢆꢂquꢂꢅciꢂꢃ bꢂlꢄw nyquiꢃꢁ. valuꢂꢃ
ꢄf ꢁhꢂ ꢃꢂꢆiꢂꢃ iꢅducꢁꢄꢆ will hꢄwꢂꢀꢂꢆ dꢂpꢂꢅd ꢄꢅ bꢄaꢆd
dꢂꢃigꢅ aꢅd cꢄꢅꢀꢂꢆꢃiꢄꢅ ꢆaꢁꢂ. Iꢅ ꢃꢄmꢂ iꢅꢃꢁaꢅcꢂꢃ a
ꢃhuꢅꢁ capaciꢁꢄꢆ iꢅ paꢆallꢂl wiꢁh ꢁhꢂ ꢁꢂꢆmiꢅaꢁiꢄꢅ ꢆꢂꢃiꢃꢁꢄꢆ
(ꢂ.g. 33 pF) may impꢆꢄꢀꢂ ADC pꢂꢆfꢄꢆmaꢅcꢂ fuꢆꢁhꢂꢆ.
thiꢃ capaciꢁꢄꢆ aꢁꢁꢂꢅuaꢁꢂꢃ ꢁhꢂ ADC kick-back ꢂꢀꢂꢅ
mꢄꢆꢂ, aꢅd miꢅimizꢂꢃ ꢁhꢂ kickꢃ ꢁꢆaꢀꢂliꢅg ꢁꢄwaꢆdꢃ ꢁhꢂ
ꢃꢄuꢆcꢂ. Hꢄwꢂꢀꢂꢆ, ꢁhꢂ impꢂdaꢅcꢂ maꢁch ꢃꢂꢂꢅ iꢅꢁꢄ ꢁhꢂ
ꢁꢆaꢅꢃfꢄꢆmꢂꢆ bꢂcꢄmꢂꢃ wꢄꢆꢃꢂ.
thꢂ jiꢁꢁꢂꢆ pꢂꢆfꢄꢆmaꢅcꢂ iꢃ impꢆꢄꢀꢂd wiꢁh ꢆꢂducꢂd ꢆiꢃꢂ
aꢅd fall ꢁimꢂꢃ ꢄf ꢁhꢂ iꢅpuꢁ clꢄck. Hꢂꢅcꢂ, ꢄpꢁimum jiꢁꢁꢂꢆ
pꢂꢆfꢄꢆmaꢅcꢂ iꢃ ꢄbꢁaiꢅꢂd wiꢁh LvDs ꢄꢆ LvPeCL clꢄck
wiꢁh faꢃꢁ ꢂdgꢂꢃ. CMos aꢅd ꢃiꢅꢂ waꢀꢂ clꢄck iꢅpuꢁꢃ will
ꢆꢂꢃulꢁ iꢅ ꢃlighꢁly dꢂgꢆadꢂd jiꢁꢁꢂꢆ pꢂꢆfꢄꢆmaꢅcꢂ.
If ꢁhꢂ clꢄck iꢃ gꢂꢅꢂꢆaꢁꢂd by ꢄꢁhꢂꢆ ciꢆcuiꢁꢆy, iꢁ ꢃhꢄuld
bꢂ ꢆꢂ-ꢁimꢂd wiꢁh a lꢄw jiꢁꢁꢂꢆ maꢃꢁꢂꢆ clꢄck aꢃ ꢁhꢂ laꢃꢁ
ꢄpꢂꢆaꢁiꢄꢅ bꢂfꢄꢆꢂ iꢁ iꢃ appliꢂd ꢁꢄ ꢁhꢂ ADC clꢄck iꢅpuꢁ.
Digital Outputs
Digiꢁal ꢄuꢁpuꢁ daꢁa aꢆꢂ pꢆꢂꢃꢂꢅꢁꢂd iꢅ paꢆallꢂl CMos
fꢄꢆm. thꢂ ꢀꢄlꢁagꢂ ꢄꢅ ꢁhꢂ ovDD piꢅ ꢃꢂꢁꢃ ꢁhꢂ lꢂꢀꢂlꢃ ꢄf ꢁhꢂ
CMos ꢄuꢁpuꢁꢃ. thꢂ ꢄuꢁpuꢁ dꢆiꢀꢂꢆꢃ aꢆꢂ dimꢂꢅꢃiꢄꢅꢂd ꢁꢄ
dꢆiꢀꢂ a widꢂ ꢆaꢅgꢂ ꢄf lꢄadꢃ fꢄꢆ ovDD abꢄꢀꢂ 2.25v,
buꢁ iꢁ iꢃ ꢆꢂcꢄmmꢂꢅdꢂd ꢁꢄ miꢅimizꢂ ꢁhꢂ lꢄad ꢁꢄ ꢂꢅꢃuꢆꢂ
aꢃ lꢄw ꢁꢆaꢅꢃiꢂꢅꢁ ꢃwiꢁchiꢅg cuꢆꢆꢂꢅꢁꢃ aꢅd ꢆꢂꢃulꢁiꢅg ꢅꢄiꢃꢂ
aꢃ pꢄꢃꢃiblꢂ. Iꢅ applicaꢁiꢄꢅꢃ wiꢁh a laꢆgꢂ faꢅꢄuꢁ ꢄꢆ laꢆgꢂ
Clock Input and Jitter considerations
typically high-ꢃpꢂꢂd ADCꢃ uꢃꢂ bꢄꢁh clꢄck ꢂdgꢂꢃ ꢁꢄ
gꢂꢅꢂꢆaꢁꢂiꢅꢁꢂꢆꢅalꢁimiꢅgꢃigꢅalꢃ.IꢅꢁhꢂHMCAD1040-40
ꢄꢅly ꢁhꢂ ꢆiꢃiꢅg ꢂdgꢂ ꢄf ꢁhꢂ clꢄck iꢃ uꢃꢂd. Hꢂꢅcꢂ,
iꢅpuꢁ clꢄck duꢁy cyclꢂꢃ bꢂꢁwꢂꢂꢅ 20% aꢅd 80% aꢆꢂ
accꢂpꢁablꢂ.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 11
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
capaciꢁiꢀꢂ lꢄadꢃ, iꢁ iꢃ ꢆꢂcꢄmmꢂꢅdꢂd ꢁꢄ add ꢂxꢁꢂꢆꢅal
buffꢂꢆꢃ lꢄcaꢁꢂd clꢄꢃꢂ ꢁꢄ ꢁhꢂ ADC chip.
cꢄdꢂꢃ aꢁ ꢁhꢂ ꢂdgꢂꢃ ꢄf ꢁhꢂ full ꢃcalꢂ ꢆaꢅgꢂ. Wiꢁh ꢅꢄ
ꢄffꢃꢂꢁ cꢄꢆꢆꢂcꢁiꢄꢅ, ꢁhꢂ ADC wꢄuld clip iꢅ ꢄꢅꢂ ꢂꢅd
bꢂfꢄꢆꢂ ꢁhꢂ ꢄꢁhꢂꢆ, iꢅ pꢆacꢁicꢂ ꢆꢂꢃulꢁiꢅg iꢅ cꢄdꢂ lꢄꢃꢃ
aꢁ ꢁhꢂ ꢄppꢄꢃiꢁꢂ ꢂꢅd. Wiꢁh ꢁhꢂ ꢄuꢁpuꢁ bꢂiꢅg cꢂꢅꢁꢂꢆꢂd
digiꢁally, ꢁhꢂ ꢄuꢁpuꢁ will clip, aꢅd ꢁhꢂ ꢄuꢁ ꢄf ꢆaꢅgꢂ flagꢃ
will bꢂ ꢃꢂꢁ, bꢂfꢄꢆꢂ max cꢄdꢂ iꢃ ꢆꢂachꢂd. Whꢂꢅ ꢄuꢁ ꢄf
ꢆaꢅgꢂ flagꢃ aꢆꢂ ꢃꢂꢁ, ꢁhꢂ cꢄdꢂ iꢃ fꢄꢆcꢂd ꢁꢄ all ꢄꢅꢂꢃ fꢄꢆ
ꢄꢀꢂꢆꢆaꢅgꢂ aꢅd all zꢂꢆꢄꢃ fꢄꢆ uꢅdꢂꢆꢆaꢅgꢂ.
thꢂ ꢁimiꢅg iꢃ dꢂꢃcꢆibꢂd iꢅ ꢁhꢂ timiꢅg Diagꢆam ꢃꢂcꢁiꢄꢅ.
nꢄꢁꢂ ꢁhaꢁ ꢁhꢂ lꢄad ꢄꢆ ꢂquiꢀalꢂꢅꢁ dꢂlay ꢄꢅ CK_eXt
alwayꢃ ꢃhꢄuld bꢂ lꢄwꢂꢆ ꢁhaꢅ ꢁhꢂ lꢄad ꢄꢅ daꢁa ꢄuꢁpuꢁꢃ
ꢁꢄ ꢂꢅꢃuꢆꢂ ꢃufficiꢂꢅꢁ ꢁimiꢅg maꢆgiꢅꢃ.
thꢂ digiꢁal ꢄuꢁpuꢁꢃ caꢅ bꢂ ꢃꢂꢁ iꢅ ꢁꢆiꢃꢁaꢁꢂ mꢄdꢂ by
ꢃꢂꢁꢁiꢅg ꢁhꢂ oe_n ꢃigꢅal high.
Data Format Selection
thꢂ ꢄuꢁpuꢁ daꢁa aꢆꢂ pꢆꢂꢃꢂꢅꢁꢂd ꢄꢅ ꢄffꢃꢂꢁ biꢅaꢆy fꢄꢆm
whꢂꢅ DFrMt iꢃ lꢄw (cꢄꢅꢅꢂcꢁꢂd ꢁꢄ ovss). sꢂꢁꢁiꢅg
DFrMt high (cꢄꢅꢅꢂcꢁꢂd ꢁꢄ ovDD) ꢆꢂꢃulꢁꢃ iꢅ 2’ꢃ
cꢄmplꢂmꢂꢅꢁ ꢄuꢁpuꢁ fꢄꢆmaꢁ. Dꢂꢁailꢃ aꢆꢂ ꢃhꢄwꢅ iꢅ
ꢁablꢂ 3.
thꢂ HMCAD1040-40 ꢂmplꢄyꢃ digiꢁal ꢄffꢃꢂꢁ cꢄꢆꢆꢂcꢁiꢄꢅ.
thiꢃ mꢂaꢅꢃ ꢁhaꢁ ꢁhꢂ ꢄuꢁpuꢁ cꢄdꢂ will bꢂ 4096 wiꢁh
ꢃhꢄꢆꢁꢂd iꢅpuꢁꢃ. Hꢄwꢂꢀꢂꢆ, ꢃmall miꢃmaꢁchꢂꢃ iꢅ
paꢆaꢃiꢁicꢃ aꢁ ꢁhꢂ iꢅpuꢁ caꢅ cauꢃꢂ ꢁhiꢃ ꢁꢄ alꢁꢂꢆ ꢃlighꢁly.
thꢂ ꢄffꢃꢂꢁ cꢄꢆꢆꢂcꢁiꢄꢅ alꢃꢄ ꢆꢂꢃulꢁꢃ iꢅ pꢄꢃꢃiblꢂ lꢄꢃꢃ ꢄf
0
tꢅbꢆꢈ 3: Dꢅꢂꢅ Fꢄꢇmꢅꢂ Dꢈscꢇꢃpꢂꢃꢄꢁ fꢄꢇ 2vpp fꢀꢆꢆ scꢅꢆꢈ ꢇꢅꢁgꢈ
ouꢁpuꢁ daꢁa: Dx_9 : Dx_0
ouꢁpuꢁ Daꢁa: Dx_9 : Dx_0
Diffꢂꢆꢂꢅꢁial Iꢅpuꢁ vꢄlꢁagꢂ (IPx - Inx)
(DFrMt = 0, ꢄffꢃꢂꢁ biꢅaꢆy)
(DFrMt = 1, 2'ꢃ cꢄmplꢂmꢂꢅꢁ)
1.0 v
+0.24mv
-0.24mv
-1.0v
11 1111 1111
10 0000 0000
01 1111 1111
00 0000 0000
01 1111 1111
00 0000 0000
11 1111 1111
10 0000 0000
Reference Voltages
thꢂ iꢅpuꢁ clꢄck ꢃhꢄuld bꢂ kꢂpꢁ ꢆuꢅꢅiꢅg iꢅ all idlꢂ
mꢄdꢂꢃ. Hꢄwꢂꢀꢂꢆ, ꢂꢀꢂꢅ lꢄwꢂꢆ pꢄwꢂꢆ diꢃꢃipaꢁiꢄꢅ iꢃ
pꢄꢃꢃiblꢂ iꢅ Pꢄwꢂꢆ Dꢄwꢅ mꢄdꢂ if ꢁhꢂ iꢅpuꢁ clꢄck iꢃ
ꢃꢁꢄppꢂd. Iꢅ ꢁhiꢃ caꢃꢂ iꢁ iꢃ impꢄꢆꢁaꢅꢁ ꢁꢄ ꢃꢁaꢆꢁ ꢁhꢂ iꢅpuꢁ
clꢄck pꢆiꢄꢆ ꢁꢄ ꢂꢅabliꢅg acꢁiꢀꢂ mꢄdꢂ.
thꢂ ꢆꢂfꢂꢆꢂꢅcꢂ ꢀꢄlꢁagꢂꢃ aꢆꢂ iꢅꢁꢂꢆꢅally gꢂꢅꢂꢆaꢁꢂd aꢅd
buffꢂꢆꢂd baꢃꢂd ꢄꢅ a baꢅdgap ꢀꢄlꢁagꢂ ꢆꢂfꢂꢆꢂꢅcꢂ. nꢄ
ꢂxꢁꢂꢆꢅal dꢂcꢄupliꢅg iꢃ ꢅꢂcꢂꢃꢃaꢆy, aꢅd ꢁhꢂ ꢆꢂfꢂꢆꢂꢅcꢂ
ꢀꢄlꢁagꢂꢃ aꢆꢂ ꢅꢄꢁ aꢀailablꢂ ꢂxꢁꢂꢆꢅally. thiꢃ ꢃimplifiꢂꢃ
uꢃagꢂ ꢄf ꢁhꢂ ADC ꢃiꢅcꢂ ꢁwꢄ ꢂxꢁꢆꢂmꢂly ꢃꢂꢅꢃiꢁiꢀꢂ piꢅꢃ,
ꢄꢁhꢂꢆwiꢃꢂ ꢅꢂꢂdꢂd, aꢆꢂ ꢆꢂmꢄꢀꢂd fꢆꢄm ꢁhꢂ iꢅꢁꢂꢆfacꢂ.
Startup Initialization
thꢂ HMCAD1040-40 muꢃꢁ bꢂ ꢆꢂꢃꢂꢁ pꢆiꢄꢆ ꢁꢄ ꢅꢄꢆmal
ꢄpꢂꢆaꢁiꢄꢅ. thiꢃ iꢃ ꢆꢂquiꢆꢂd ꢂꢀꢂꢆy ꢁimꢂ ꢁhꢂ pꢄwꢂꢆ
ꢃupply ꢀꢄlꢁagꢂ haꢃ bꢂꢂꢅ ꢃwiꢁchꢂd ꢄff. A ꢆꢂꢃꢂꢁ iꢃ
pꢂꢆfꢄꢆmꢂd by applyiꢅg Pꢄwꢂꢆ Dꢄwꢅ mꢄdꢂ. Waiꢁ uꢅꢁil a
ꢃꢁablꢂ ꢃupply ꢀꢄlꢁagꢂ haꢃ bꢂꢂꢅ ꢆꢂachꢂd, aꢅd pull ꢁhꢂ
PD_n piꢅ fꢄꢆ ꢁhꢂ duꢆaꢁiꢄꢅ ꢄf aꢁ lꢂaꢃꢁ ꢄꢅꢂ clꢄck cyclꢂ.
thꢂ iꢅpuꢁ clꢄck muꢃꢁ bꢂ ꢆuꢅꢅiꢅg cꢄꢅꢁiꢅuꢄuꢃly duꢆiꢅg
ꢁhiꢃ Pꢄwꢂꢆ Dꢄwꢅ pꢂꢆiꢄd aꢅd uꢅꢁil acꢁiꢀꢂ ꢄpꢂꢆaꢁiꢄꢅ
iꢃ ꢆꢂachꢂd. Alꢁꢂꢆꢅaꢁiꢀꢂly ꢁhꢂ PD piꢅ caꢅ bꢂ kꢂpꢁ lꢄw
duꢆiꢅg pꢄwꢂꢆ-up, aꢅd ꢁhꢂꢅ bꢂ ꢃꢂꢁ high whꢂꢅ ꢁhꢂ pꢄwꢂꢆ
ꢃupply ꢀꢄlꢁagꢂ iꢃ ꢃꢁablꢂ.
Operational Modes
thꢂ ꢄpꢂꢆaꢁiꢄꢅal mꢄdꢂꢃ aꢆꢂ cꢄꢅꢁꢆꢄllꢂd wiꢁh ꢁhꢂ PD_n
aꢅd sLP_n piꢅꢃ. If PD_n iꢃ ꢃꢂꢁ lꢄw, all ꢄꢁhꢂꢆ cꢄꢅꢁꢆꢄl
piꢅꢃ aꢆꢂ ꢄꢀꢂꢆꢆiddꢂꢅ aꢅd ꢁhꢂ chip iꢃ ꢃꢂꢁ iꢅ Pꢄwꢂꢆ Dꢄwꢅ
mꢄdꢂ. Iꢅ ꢁhiꢃ mꢄdꢂ all ciꢆcuiꢁꢆy iꢃ cꢄmplꢂꢁꢂly ꢁuꢆꢅꢂd ꢄff
aꢅd ꢁhꢂ iꢅꢁꢂꢆꢅal clꢄck iꢃ diꢃablꢂd. Hꢂꢅcꢂ, ꢄꢅly lꢂakagꢂ
cuꢆꢆꢂꢅꢁ cꢄꢅꢁꢆibuꢁꢂꢃ ꢁꢄ ꢁhꢂ Pꢄwꢂꢆ Dꢄwꢅ Diꢃꢃipaꢁiꢄꢅ.
thꢂ ꢃꢁaꢆꢁup ꢁimꢂ fꢆꢄm ꢁhiꢃ mꢄdꢂ iꢃ lꢄꢅgꢂꢆ ꢁhaꢅ fꢄꢆ
ꢄꢁhꢂꢆ idlꢂ mꢄdꢂꢃ aꢃ all ꢆꢂfꢂꢆꢂꢅcꢂꢃ ꢅꢂꢂd ꢁꢄ ꢃꢂꢁꢁlꢂ ꢁꢄ
ꢁhꢂiꢆ fiꢅal ꢀaluꢂꢃ bꢂfꢄꢆꢂ ꢅꢄꢆmal ꢄpꢂꢆaꢁiꢄꢅ caꢅ ꢆꢂꢃumꢂ.
thꢂ sLP_n buꢃ caꢅ bꢂ uꢃꢂd ꢁꢄ pꢄwꢂꢆ dꢄwꢅ ꢂach
chaꢅꢅꢂl iꢅdꢂpꢂꢅdꢂꢅꢁly, ꢄꢆ ꢁꢄ ꢃꢂꢁ ꢁhꢂ full chip iꢅ slꢂꢂp
Mꢄdꢂ. Iꢅ ꢁhiꢃ mꢄdꢂ iꢅꢁꢂꢆꢅal clꢄckiꢅg iꢃ diꢃablꢂd, buꢁ
ꢃꢄmꢂ lꢄw baꢅdwidꢁh ciꢆcuiꢁꢆy iꢃ kꢂpꢁ ꢄꢅ ꢁꢄ allꢄw fꢄꢆ a
ꢃhꢄꢆꢁ ꢃꢁaꢆꢁup ꢁimꢂ. Hꢄwꢂꢀꢂꢆ, slꢂꢂp Mꢄdꢂ ꢆꢂpꢆꢂꢃꢂꢅꢁꢃ
a ꢃigꢅificaꢅꢁ ꢆꢂducꢁiꢄꢅ iꢅ ꢃupply cuꢆꢆꢂꢅꢁ, aꢅd iꢁ caꢅ bꢂ
uꢃꢂd ꢁꢄ ꢃaꢀꢂ pꢄwꢂꢆ ꢂꢀꢂꢅ fꢄꢆ ꢃhꢄꢆꢁ idlꢂ pꢂꢆiꢄdꢃ.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 12
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
oꢀꢂꢆꢃꢁꢈ Dꢇꢅwꢃꢁg
0
tꢅbꢆꢈ 4. 9x9mm QFn (64 Pꢃꢁ lP9) Dꢃmꢈꢁsꢃꢄꢁs
Millimꢂꢁꢂꢆ
Iꢅch
symbꢄl
Miꢅ
0
typ
Max
0.9
Miꢅ
0
typ
Max
0.035
0.002
0.028
A
A1
A2
A3
b
0.01
0.65
0.05
0.7
0.0004
0.026
0.2 reF
0.25
0.008 reF
0.01
0.2
0.3
0.008
0.012
D
9.00 bꢃc
8.75 bꢃc
3.99
0.354 bꢃc
0.344 bꢃc
0.157
D1
D2
L
3.79
0.3
4.19
0.5
0.149
0.012
0.165
0.02
0.4
0.016
ꢂ
0.50 bꢃc
0.020 bꢃc
Ѳ1
F
0°
1.9
12°
0.6
0°
12°
0.075
0.0096
G
0.24
0.42
0.0168
0.024
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
0 - 13
HMCAD1040-40
ꢀ01.0411
Dual 10-Bit 20/40 MSPS
a/D Converter
Pꢅckꢅgꢈ iꢁfꢄꢇmꢅꢂꢃꢄꢁ
Part Number
Package Body Material
Lead Finish
MSL [1]
Package Marking [2]
AsD0400
XXXX
HMCAD1040-40
rꢄHs-cꢄmpliaꢅꢁ Lꢄw sꢁꢆꢂꢃꢃ Iꢅjꢂcꢁiꢄꢅ Mꢄldꢂd Plaꢃꢁic
100% maꢁꢁꢂ sꢅ
Lꢂꢀꢂl 2A
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[1] MsL, Pꢂak tꢂmp: thꢂ mꢄiꢃꢁuꢆꢂ ꢃꢂꢅꢃiꢁiꢀiꢁy lꢂꢀꢂl ꢆaꢁiꢅg claꢃꢃifiꢂd accꢄꢆdiꢅg ꢁꢄ ꢁhꢂ JeDeC iꢅduꢃꢁꢆy ꢃꢁaꢅdaꢆd aꢅd ꢁꢄ pꢂak ꢃꢄldꢂꢆ ꢁꢂmpꢂꢆaꢁuꢆꢂ.
[2] Pꢆꢄpꢆiꢂꢁaꢆy maꢆkiꢅg XXXX, 4-Digiꢁ lꢄꢁ ꢅumbꢂꢆ XXXX
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For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
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